#25151B
Closest named color: Rich Black (#0D1B2A). oklch(22% 0.028 355.5), rgb(37, 21, 27).
Aa
White text reads best on this color (17.47:1).
About this color
#25151B is a very dark close to neutral grey. In OKLCH its lightness is 22%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Rich Black (#0D1B2A), ΔE 0.050 away. White text reads best on it, at 17.47:1.
| Hue family | Neutrals |
| Lightness | very dark (22%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Rich Black (#0D1B2A) |
| Black text | 1.20:1 |
| White text | 17.47:1 |
Values
| HEX | #25151B |
| RGB | rgb(37, 21, 27) |
| HSL | hsl(338, 28%, 11%) |
| OKLCH | oklch(22% 0.028 355.5) |
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 #25151B | 17.47:1 | AAA | Lc -106.5 | Preferred for body text |
| Black text on #25151B | 1.20:1 | Fails | Lc 0.0 | Not readable |
| #25151B text on white | 17.47:1 | AAA | Lc 104.3 | Preferred for body text |
| #25151B text on black | 1.20:1 | 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
#F8F4F5
oklch(97.1% 0.004 360)
-
Step 100
100
#F0E7EA
oklch(93.6% 0.011 354.9)
-
Step 200
200
#E4D4D9
oklch(88.4% 0.019 356.5)
-
Step 300
300
#D3B8C1
oklch(80.8% 0.033 355.7)
-
Step 400
400
#BD93A2
oklch(70.7% 0.054 355.3)
-
Step 500
500
#AB788B
oklch(63% 0.068 355.2)
-
Step 600
600
#966175
oklch(55.6% 0.074 355.5)
-
Step 700
700
#805062
oklch(49.1% 0.069 355.9)
-
Step 800
800
#684250
oklch(42.7% 0.056 356)
-
Step 900
900
#553842
oklch(37.8% 0.044 357.1)
-
Step 950
950 (this color)
#25151B
oklch(22% 0.028 355.5)
#25151B 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) | #17181B | 0.030 |
| Deuteranopia (no green cones) | #1B1B1B | 0.028 |
| Tritanopia (no blue cones) | #271417 | 0.008 |
| Achromatopsia (no color) | #1A1A1A | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25151B
#25151B
oklch(22% 0.028 355.5)
- #0B1F1A
#0B1F1A
oklch(22.1% 0.028 175.3)
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 #25151B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rich Black #0D1B2A ΔE 0.050
- Jet #212529 ΔE 0.053
- Dark #1B2431 ΔE 0.057
- Dark Brown #341C02 ΔE 0.061
- Dark Maroon #3C0008 ΔE 0.066
- Oxford Blue #1B263B ΔE 0.072
- Rich Navy #001219 ΔE 0.074
- Eggplant #380835 ΔE 0.075
Use #25151B 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.