Color Details and Palettes for #EFFEA1

Details about the color Yellow Chalk

Closest web-safe match: #FFFF99

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 #EFFEA1
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About Color Hex #effea1

The color Yellow Chalk, with hexadecimal code #effea1, resides within the green color family, the hue most connected to nature, growth, and renewal. Green soothes the eye more than any other color, making it ideal for wellness, sustainability, and financial brands. Additionally, it evokes emotions such as Softness, Delicacy, Calmness, Relaxation and Friendliness. Green is often linked to nature and growth universally, and in some cultures, it symbolizes fertility, renewal, and even immortality. In Islam, green holds significant religious meaning. With a high saturation of 98%, this color is intensely vivid—demanding attention and ideal for focal elements like buttons, banners, and brand marks. At 81% lightness, it strikes an approachable, open balance—bright enough to feel welcoming yet substantial enough to carry visual weight. This color is ideal for designs that aim to express Softness, Delicacy, Calmness, Relaxation, or Friendliness. It can be effectively used in web design, branding, and marketing materials to attract attention and convey specific messages.

The RGB values for Yellow Chalk are (239, 254, 161), providing a combination of red: 239, green: 254, and blue: 161. In HSL format, it has a hue of 70.00°, saturation of 98.00%, and lightness of 81.00%.

The HSV representation includes a hue of 70.00°, saturation of 37.00%, and value of 100.00%. Its CMYK composition is cyan: 6.00%, magenta: 0.00%, yellow: 37.00%, and black: 0.00%.

The calculated luminance of #effea1 is 0.918, offering a brightness level suitable for various design requirements.

This color is not part of the web-safe color palette. The closest web-safe color to this is the color HEX #FFFF99. Its contrast ratio is 19.36:1 against black and 1.08:1 against white. It works well on dark backgrounds but may be less readable on lighter ones.

In terms of color temperature, #effea1 reads as cool. When it comes to accessibility, testing against standard guidelines suggests that using black text meets typical WCAG contrast standards. Additionally, the ideal foreground color for improved legibility on #effea1 is black.

Considering its saturation and lightness, #effea1 appears more vivid and energetic, making it stand out in designs that aim to capture attention.

History, Usage, Psychology & Design Ideas for #EFFEA1

Yellow Chalk (#EFFEA1) belongs to the Lime color family.

As a bright tone with high saturation and generous lightness, it radiates energy and optimism. Bright variations like this perform well in summer campaigns, children's products, and attention-grabbing hero sections.

Historical Background

Lime green emerged as a popular color in the mid-20th century, fueled by psychedelic art and pop culture. The color takes its name from the citrus fruit, and its bright, acidic quality made it a staple of 1960s mod fashion and 1990s rave culture. In nature, lime green appears in new spring foliage, signaling the first stages of growth after winter dormancy.

Design & Usage Tips

Lime green projects youthful energy and works well for sports, fitness, and tech brands targeting younger demographics. It pairs effectively with dark purple or navy for bold complementary schemes, or with white for a fresh, clean look. Use lime sparingly as an accent—it can overwhelm when used as a dominant color.

Sitting on the cool side of the spectrum (hue 70°), it promotes a feeling of calm distance and intellectual clarity, which is why cool hues dominate corporate identities, healthcare design, and productivity tools. At 98% saturation, this is a highly vivid color that demands attention. Use it where maximum visual impact is needed—feature banners, accent buttons, and data-visualization highlights.

Psychological Impact

Lime stimulates vitality, freshness, and excitement. It sits at the boundary of yellow's optimism and green's natural calm, creating a unique sense of dynamic growth. Lime is particularly effective in contexts where energy and eco-consciousness intersect.

At 81% lightness, it reads clearly on dark backgrounds and provides a welcoming, open feel in light-themed designs—versatile across both contexts.

Creative Design Ideas

Use lime as a highlight color for progress bars, success states, and achievement badges in gamified interfaces. Combine lime with matte black for an electric, high-tech brand identity. In packaging, lime accents on white suggest organic freshness—ideal for health drinks and snack brands.

#EFFEA1 Color Conversions

Every way to write Yellow Chalk — copy Yellow Chalk as RGB, HSL, HSV, HWB, CMYK, OKLCH, OKLab, CIELAB, LCH, XYZ or a decimal integer. One-tap copy on every format; tap on any card to learn what it is and when to use it.

12 formats
HEX Web
#EFFEA1

Hexadecimal is the web’s universal color notation — two digits each for red, green and blue. Drop it straight into HTML, CSS or any design tool.

RGB Screen
rgb(239, 254, 161)

RGB is the additive Red-Green-Blue model every screen uses to emit light. The default choice for websites, apps and on-screen UI.

HSL Web
hsl(70, 98%, 81%)

HSL breaks a color into Hue, Saturation and Lightness — the most intuitive way to lighten, darken or mute a color in CSS.

HSV HSB Design
hsv(70, 37%, 100%)

HSV (also called HSB) maps Hue, Saturation and Value/Brightness. It is the model behind the color pickers in Photoshop, Figma and most design apps.

HWB CSS 4
hwb(70 63% 0%)

HWB blends a pure hue with Whiteness and Blackness — a painter-friendly model added in CSS Color 4 for quick tints and shades.

CMYK Print
cmyk(6%, 0%, 37%, 0%)

CMYK is the subtractive Cyan-Magenta-Yellow-Black ink model. Use these values when preparing artwork for a printer or commercial press.

OKLCH Modern
oklch(96.53% 0.117 116.12)

OKLCH is a modern, perceptually-uniform space (Lightness, Chroma, Hue). It powers smooth gradients and accessible palettes in today’s CSS.

OKLab Modern
oklab(96.53% -0.052 0.105)

OKLab is the Cartesian form of OKLCH — ideal for blending and interpolating colors without the muddy midpoints older spaces produce.

CIELAB L*a*b* Perceptual
L: 96.74, a: -18.90, b: 42.85

CIELAB is a device-independent, perceptually-uniform space. It is the standard for measuring color difference (ΔE) and matching across devices.

LCH Perceptual
L: 96.74, C: 46.83, H: 113.80

LCH is CIELAB in cylindrical form — Lightness, Chroma and Hue — letting you adjust vividness and hue while staying perceptually even.

XYZ CIE Science
X: 77.47, Y: 91.81, Z: 47.36

CIE XYZ is the 1931 master space that underpins every other model here — the scientific bridge used to convert between color systems.

Decimal int Code
15728289

The 24-bit integer value of the color — handy for databases, APIs, game engines and low-level graphics code.

RGB Color Percentages for #effea1

RGB Color Percentages for Yellow Chalk (HEX Code: #effea1) display the relative contribution of Red, Green, and Blue in forming the color. Understanding these percentages provides insight into the color's visual balance and primary components.

This color is primarily dominated by Green, making up 38.84% of the total composition. The complete breakdown of RGB contributions is:

Red:
36.54%
Green:
38.84%
Blue:
24.62%

This analysis highlights the influence of each primary color, offering a deeper understanding of the visual characteristics of Yellow Chalk.

CMYK Ink Levels & Print Guide for #effea1

CMYK Ink Levels for Yellow Chalk (HEX Code: #effea1) provide a breakdown of the percentages of Cyan, Magenta, Yellow, and Black inks needed for accurate print reproduction. The composition of Yellow Chalk prominently features Yellow, reflecting its dominant color characteristic. This information is invaluable for optimizing ink usage and achieving precise color results in printed materials.

The exact CMYK values are: Cyan: 5.91%, Magenta: 0%, Yellow: 36.61%, and Black: 0.39%.

Luminance & Contrast for #EFFEA1

Relative luminance gauges how bright Yellow Chalk is, while the WCAG contrast ratios show how legible black or white text is on it — and which accessibility levels (AA / AAA) it passes.

Relative luminance 0.918
0 · dark1 · light
Aa
Black text 19.36:1
AA AAA Large
Aa
White text 1.08:1
AA AAA Large

Quick CSS Snippets for #EFFEA1

Copy-and-paste CSS for Yellow Chalk — backgrounds, text, borders and a custom property. Each line is ready to drop into your stylesheet.

Background background-color: #EFFEA1;
Text color: #EFFEA1;
Border border: 2px solid #EFFEA1;
RGB background-color: rgb(239, 254, 161);
HSL background-color: hsl(70, 98%, 81%);
Variable --color: #EFFEA1;

#effea1 Monochrome Palette

The Monochrome Palette consists of shades created by adjusting the brightness. These include lighter, original, and darker shades of the color. This layout helps to visualize the color's range and its potential use in design.

#fdfff6
#fbffe8
#f9ffd9
#f6fecb
#f4febd
#f1feaf
#effea1 Original
#cbd889
#a7b271
#838c59
#606640
#3c4028
#181910

#effea1 Complementary Palette

The Complementary Palette is made up of two colors that sit opposite each other on the color wheel. These colors create high contrast and vibrant designs, making them perfect for attention-grabbing elements and dynamic visuals.

#effea1 Original
#af9ffe

#effea1 Analogic Palette

The Analogic Palette consists of colors that are next to each other on the color wheel. These colors typically create harmonious and subtle designs, often used to evoke calmness and unity in your visual projects.

#effea1 Original
#bffe9f
#fede9f
#9ffeaf
#feaf9f
#9ffede
#fe9fbf

#effea1 Triadic Palette

The Triadic Palette is made up of three colors evenly spaced on the color wheel. This combination provides a vibrant and balanced color scheme, often used for dynamic and energetic designs while maintaining harmony.

#effea1 Original
#9feefe
#fe9fee

#effea1 Quad Palette

The Quad Palette, also known as tetradic, consists of four colors evenly spaced on the color wheel. This combination offers a diverse and bold color scheme, ideal for creating rich, complex designs with multiple accents while still maintaining balance.

#effea1 Original
#9ffede
#af9ffe
#fe9fbf

Color Blindness Simulation for #effea1

Colors are perceived differently by individuals with various forms of color blindness. Use the dropdown below to see how this color may look through the eyes of someone with color vision deficiency. Explore how Yellow Chalk (#effea1) might appear to people with different visual experiences, and gain deeper insights into color accessibility for your designs!

Each color box displays a "Friendly" or "Not Friendly" tag in the bottom-right corner. A "Friendly" tag indicates that the color difference is distinguishable to individuals with the specific type of color blindness. Conversely, a "Not Friendly" tag means that the color difference might not be distinguishable, potentially causing accessibility issues in your design.

Normal Vision

Deuteranopia (Green Weakness)

Friendly

Protanopia (Red Weakness)

Friendly

Tritanopia (Blue-Yellow Weakness)

Not Friendly

Achromatopsia (Total Color Blindness)

Not Friendly

Color Harmonies for #effea1

Color harmonies refer to the visually pleasing combinations of colors that are derived from specific relationships on the color wheel. These harmonious schemes, such as complementary, triadic, and analogous colors, create a balanced and engaging visual experience in design.

Complementary

Analogous

Triadic

Tetradic (Quad)

#EFFEA1 Nearby Colors

A handful of colors just a step away from #EFFEA1 — each one nudges the brightness, richness, or shade a little while still feeling like the same color. Use the buttons on any swatch to copy its hex or open its full color page.

#ffffaa Ginger Lemon Tea
#ddee99 Creamy Avocado
#ccdd88 Alligator Alley
#eeff99 Walking on Sunshine
#eeffaa Yellow Chalk
#ddffaa Lime Mist
#ffff99 Pastel Yellow
#ccffaa Celery Mousse

Colors Similar to #effea1

These colors are close neighbours of #EFFEA1 in the RGB color space. Each subtle variation can produce a noticeably different mood in your design while remaining harmonious with the original Green tone.

#f0fea1 Yellow Chalk
#efffa1 Yellow Chalk
#effea2 Yellow Chalk
#eefea1 Yellow Chalk
#effda1 Yellow Chalk
#effea0 Walking on Sunshine
#fffea1 Walking on Sunshine
#effeb2 Yellow Chalk
#defea1 Lime Mist
#efeda1 Pale Canary
#effe90 Pastel Yellow
#f7fea1 Walking on Sunshine

Looking for more Green shades? Browse Green colors →

Explore Vibrant Images Featuring Yellow Chalk (#effea1)

Discover a vibrant gallery of images that not only showcase the captivating hue of Yellow Chalk, but also embody its unique mood and personality. Each carefully curated photo is selected to highlight the richness and diversity of this color, offering inspiration for design, art, and creative projects.