Color Details and Palettes for #00232E

Details about the color Black Box

Closest web-safe match: #003333

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 #00232E
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About Color Hex #00232e

The color Black Box, with hexadecimal code #00232e, is categorized under the cyan family—a cool, refreshing hue fundamental to CMYK printing. Cyan evokes clarity, focus, and digital innovation, appearing across tech interfaces and futuristic design systems. Additionally, it evokes emotions such as Power, Elegance, Formality, Mystery and Authority. Cyan or blue-green is associated with healing, water, and tranquility. It can symbolize communication and clarity in various cultures. With a high saturation of 100%, this color is intensely vivid—demanding attention and ideal for focal elements like buttons, banners, and brand marks. At only 9% lightness, this extremely dark shade approaches black, delivering maximum drama and contrast when paired with lighter elements. This color is ideal for designs that aim to express Power, Elegance, Formality, Mystery, or Authority. It can be effectively used in web design, branding, and marketing materials to attract attention and convey specific messages.

The RGB values for Black Box are (0, 35, 46), providing a combination of red: 0, green: 35, and blue: 46. In HSL format, it has a hue of 194.00°, saturation of 100.00%, and lightness of 9.00%.

The HSV representation includes a hue of 194.00°, saturation of 100.00%, and value of 18.00%. Its CMYK composition is cyan: 100.00%, magenta: 24.00%, yellow: 0.00%, and black: 82.00%.

The calculated luminance of #00232e is 0.014, 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 #003333. Its contrast ratio is 1.28:1 against black and 16.41:1 against white. It works well on light backgrounds but may be challenging on darker ones.

In terms of color temperature, #00232e reads as cool. When it comes to accessibility, testing against standard guidelines suggests that using white text meets typical WCAG contrast standards. Additionally, the ideal foreground color for improved legibility on #00232e is white.

Considering its saturation and lightness, #00232e appears more vivid and energetic, making it stand out in designs that aim to capture attention.

History, Usage, Psychology & Design Ideas for #00232E

Black Box (#00232E) belongs to the Cyan color family.

This deep, saturated shade conveys authority and richness. Deep tones are favored in luxury packaging, evening-event branding, and dark-mode interfaces where they provide dramatic contrast against lighter elements.

Historical Background

Cyan is one of the four foundational inks in CMYK printing, making it literally indispensable to modern publishing. The name derives from the Greek kyanos, meaning 'dark blue,' though the color we call cyan today is distinctly lighter. Ancient Egyptian blue—one of the earliest synthetic pigments (c. 2200 BC)—was close to cyan and used extensively in tomb paintings and pottery across the Nile Valley.

Design & Usage Tips

Cyan projects a high-tech, digital-forward identity and pairs naturally with white for clean interfaces or with magenta for vibrant contrast. It works well for SaaS products, data-visualization tools, and creative agencies. Use cyan sparingly on warm-toned palettes, as it can feel cold in those contexts.

Sitting on the cool side of the spectrum (hue 194°), it promotes a feeling of calm distance and intellectual clarity, which is why cool hues dominate corporate identities, healthcare design, and productivity tools. At 100% 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

Cyan stimulates mental clarity, focus, and communication. It feels refreshing—like a splash of cool water—making it ideal for apps and services centered on productivity, learning, or wellness. Cyan also carries associations with futurism and digital innovation.

At just 9% lightness, this is an extremely dark shade that approaches black. It is best reserved for text, thin borders, or dramatic full-bleed backgrounds paired with light typography.

Creative Design Ideas

Build a dark-mode interface with cyan accent elements (buttons, links, progress indicators) on a charcoal background for a sleek developer-tool aesthetic. Use cyan-to-blue gradients in header sections for SaaS landing pages. In print, spot-color cyan on uncoated paper stock creates a tactile, modern feel.

#00232E Color Conversions

Every way to write Black Box — copy Black Box 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
#00232E

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(0, 35, 46)

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(194, 100%, 9%)

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(194, 100%, 18%)

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(194 0% 82%)

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(100%, 24%, 0%, 82%)

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(23.78% 0.044 223.27)

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

OKLab Modern
oklab(23.78% -0.032 -0.030)

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: 11.95, a: -7.59, b: -10.82

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

LCH Perceptual
L: 11.95, C: 13.22, H: 234.95

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

XYZ CIE Science
X: 1.09, Y: 1.40, Z: 2.80

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
9006

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

RGB Color Percentages for #00232e

RGB Color Percentages for Black Box (HEX Code: #00232e) 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 Blue, making up 56.79% of the total composition. The complete breakdown of RGB contributions is:

Red:
0%
Green:
43.21%
Blue:
56.79%

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

CMYK Ink Levels & Print Guide for #00232e

CMYK Ink Levels for Black Box (HEX Code: #00232e) provide a breakdown of the percentages of Cyan, Magenta, Yellow, and Black inks needed for accurate print reproduction. The composition of Black Box prominently features Cyan, 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: 100%, Magenta: 23.91%, Yellow: 0%, and Black: 81.96%.

Luminance & Contrast for #00232E

Relative luminance gauges how bright Black Box 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 0.014
0 · dark1 · light
Aa
Black text 1.28:1
AA AAA Large
Aa
White text 16.41:1
AA AAA Large

Quick CSS Snippets for #00232E

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

Background background-color: #00232E;
Text color: #00232E;
Border border: 2px solid #00232E;
RGB background-color: rgb(0, 35, 46);
HSL background-color: hsl(194, 100%, 9%);
Variable --color: #00232E;

#00232e 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.

#e5e9ea
#bfc8cb
#99a7ab
#73868c
#4d656d
#26444d
#00232e Original
#001e27
#001920
#001319
#000e12
#00090c
#000405

#00232e 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.

#00232e Original
#2e0b00

#00232e 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.

#00232e Original
#000c2e
#002e22
#0b002e
#002e0b
#22002e
#0c2e00

#00232e 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.

#00232e Original
#2e0023
#232e00

#00232e 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.

#00232e Original
#22002e
#2e0b00
#0c2e00

Color Blindness Simulation for #00232e

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 Black Box (#00232e) 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)

Friendly

Achromatopsia (Total Color Blindness)

Friendly

Color Harmonies for #00232e

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)

#00232E Nearby Colors

A handful of colors just a step away from #00232E — 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.

#113333 Elite Teal
#001122 Oxford by Night
#224444 Emerald Forest
#000011 Obsidian Shard
#002233 Midnight Dreams
#112222 Sunken Ship
#112233 The Count’s Black
#002222 Sunken Ship

Colors Similar to #00232e

These colors are close neighbours of #00232E in the RGB color space. Each subtle variation can produce a noticeably different mood in your design while remaining harmonious with the original Cyan tone.

#01232e Black Box
#00242e Black Box
#00232f Black Box
#00222e Midnight Dreams
#00232d Black Box
#11232e Oceanic Noir
#00342e Botanical Night
#00233f Midnight Mirage
#00122e Squid’s Ink
#00231d Nightmare
#08232e Black Box
#002b2e Elite Teal

Looking for more Cyan shades? Browse Cyan colors →

Explore Vibrant Images Featuring Black Box (#00232e)

Discover a vibrant gallery of images that not only showcase the captivating hue of Black Box, 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.