Rich Black
Also known as: Warm Black , Dark Side , Rapture , Cyprus
Expect cool and clear associations from Rich Black, a deep cyan suited to tech interfaces and water themes. Its complement lands in red territory, which makes for striking two-color pairings. On white it reads clearly at 11.62:1 contrast, safe for body text under WCAG AA.
Reference
Rich Black color codes
- HEX
- #004040
- RGB
- rgb(0, 64, 64)
- RGBA
- rgba(0, 64, 64, 1)
- HSL
- hsl(180, 100%, 13%)
- HSV
- hsv(180, 100%, 25%)
- CMYK
- cmyk(100%, 0%, 0%, 75%)
- LAB
- lab(23.6 -18.8 -5.6)
- OKLCH
- oklch(33.6% 0.057 194.8)
Analysis
Color intelligence
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Gamut
The full range of colors a device or space can show. sRGB is the common screen gamut; Display P3 is wider. A color outside a gamut cannot be shown accurately there and must be mapped inward.Full glossary entry →Displays accurately on every screen and translates well to print.
Temperature
Undertone
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cool
Nearest standard colors
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Delta E (ΔE)
A measure of how different two colors look. Below 1 the difference is invisible to almost everyone; below 2.3 most people can't tell them apart; above 10 they are clearly different colors. We use CIEDE2000, the modern standard.Full glossary entry →
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Delta E (ΔE)
A measure of how different two colors look. Below 1 the difference is invisible to almost everyone; below 2.3 most people can't tell them apart; above 10 they are clearly different colors. We use CIEDE2000, the modern standard.Full glossary entry →- CSS: darkslategray #2F4F4F · ΔE 7.2
- RAL 6004: Blue green #0E4243 · ΔE 1.6 · approximate
RAL values are widely published approximations of the physical standard. For Pantone-adjacent workflows, match by eye against a physical fan deck. Pantone's values are proprietary and device-dependent, so we don't print lookups.
Where Rich Black works
- Web & UI: Dark enough for body text and icons on white backgrounds. It passes WCAG AA as-is.
- Interiors: Strong for a whole room, excellent in doses: an accent wall, cabinetry, or a statement chair.
- Fashion: Wears best as the statement piece, a top, scarf, or shoes, against neutral basics.
- Branding: Sits in the trust register: a natural primary for finance, health, and B2B brands.
- Web & UI: A supporting-cast color for UI: chart fills, tags, and empty-state illustrations, but not text.
- Branding: A secondary brand color by nature: it supports a stronger primary and shines in illustration.
Copy as: every ecosystem
Variations
Tints, shades, and tones of Rich Black
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Tint
A color mixed with white, which raises its lightness. Pink is a tint of red. Tints feel softer and more open than the base color.Full glossary entry →
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Tint
A color mixed with white, which raises its lightness. Pink is a tint of red. Tints feel softer and more open than the base color.Full glossary entry →Tints (lighter)
Shades (darker)
Harmonies
Color harmonies
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Complementary colors
Two colors opposite each other on the wheel. They create the strongest contrast and make each other look more intense, so they work best used unevenly.Full glossary entry →
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Complementary colors
Two colors opposite each other on the wheel. They create the strongest contrast and make each other look more intense, so they work best used unevenly.Full glossary entry →Palettes built from Rich Black by rotating its hue in OKLCH space. Click any swatch to copy its hex code.
Complementary
Analogous
Triadic
Split-complementary
Tetradic
Monochromatic
Accessibility
Contrast & accessibility
Aa on white
contrast 11.62:1
AA pass AAA pass AA large pass
Aa on black
contrast 1.81:1
AA fail AAA fail AA large fail
Best text color on a Rich Black background: #ffffff
Palettes
Palettes featuring Rich Black
Rich Black with its complement
Soft neighbors of Rich Black
Rich Black triad
Explore
Similar colors
- Elite Teal #133337 · ΔE 6.8
- Cape Verde #01554F · ΔE 7.3
- Everglade #264334 · ΔE 8.5
- Hunter #33534B · ΔE 8.6
- Lacrosse #2E5C58 · ΔE 9.5
- Mosque #005F5B · ΔE 10.2
Looking for maximum contrast instead? The complement of Rich Black is closest to Lonestar .
FAQ
Rich Black FAQs
What color is Rich Black?
Rich Black is a dark cyan with the hex code #004040. In HSL terms it has a hue of 180°, 100% saturation, and 13% lightness.
What is the hex code for Rich Black?
The hex code for Rich Black is #004040. In RGB it's rgb(0, 64, 64), and in CMYK it's cmyk(100%, 0%, 0%, 75%).
What colors go well with Rich Black?
Rich Black pairs naturally with red tones from its complementary harmony, and with pink accents from its split-complementary palette. Its own tints and shades always work as a monochrome scheme.
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