#15231A
Closest named color: Jet (#212529). oklch(24% 0.026 155.7), rgb(21, 35, 26).
Aa
White text reads best on this color (16.31:1).
About this color
#15231A is a very dark close to neutral grey. In OKLCH its lightness is 24%, its chroma 0.026. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.036 away. White text reads best on it, at 16.31:1.
| Hue family | Neutrals |
| Lightness | very dark (24%) |
| Chroma | close to neutral grey (0.026) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.28:1 |
| White text | 16.31:1 |
Values
| HEX | #15231A |
| RGB | rgb(21, 35, 26) |
| HSL | hsl(141, 25%, 11%) |
| OKLCH | oklch(24% 0.026 155.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #15231A | 16.31:1 | AAA | Lc -105.7 | Preferred for body text |
| Black text on #15231A | 1.28:1 | Fails | Lc 0.0 | Not readable |
| #15231A text on white | 16.31:1 | AAA | Lc 103.2 | Preferred for body text |
| #15231A text on black | 1.28:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 950.
-
Step 50
50
#F3F6F4
oklch(97% 0.004 157.2)
-
Step 100
100
#E5ECE7
oklch(93.6% 0.01 155.1)
-
Step 200
200
#D1DDD4
oklch(88.6% 0.018 153.5)
-
Step 300
300
#B2C7B8
oklch(80.9% 0.031 154.6)
-
Step 400
400
#89AA94
oklch(70.7% 0.048 155.8)
-
Step 500
500
#6A9579
oklch(63% 0.063 155.6)
-
Step 600
600
#517F62
oklch(55.5% 0.068 155.8)
-
Step 700
700
#426C51
oklch(49.2% 0.064 155.1)
-
Step 800
800
#365843
oklch(42.8% 0.053 156.2)
-
Step 900
900
#2F4838
oklch(37.6% 0.041 155.8)
-
Step 950
950 (this color)
#15231A
oklch(24% 0.026 155.7)
#15231A with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #23211A | 0.024 |
| Deuteranopia (no green cones) | #211F1A | 0.024 |
| Tritanopia (no blue cones) | #132320 | 0.011 |
| Achromatopsia (no color) | #202020 | 0.026 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #15231A
#15231A
oklch(24% 0.026 155.7)
- #271B24
#271B24
oklch(24.1% 0.025 335.5)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #15231A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.036
- Dark #1B2431 ΔE 0.045
- Rich Black #0D1B2A ΔE 0.051
- Dark Forest Green #002D04 ΔE 0.061
- Dark Brown #341C02 ΔE 0.062
- Very Dark Green #062E03 ΔE 0.062
- Oxford Blue #1B263B ΔE 0.063
- Rich Navy #001219 ΔE 0.078
Use #15231A in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.