#18251D
Closest named color: Jet (#212529). oklch(24.9% 0.024 157.2), rgb(24, 37, 29).
Aa
White text reads best on this color (15.89:1).
About this color
#18251D is a very dark close to neutral grey. In OKLCH its lightness is 25%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.029 away. White text reads best on it, at 15.89:1.
| Hue family | Neutrals |
| Lightness | very dark (25%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.32:1 |
| White text | 15.89:1 |
Values
| HEX | #18251D |
| RGB | rgb(24, 37, 29) |
| HSL | hsl(143, 21%, 12%) |
| OKLCH | oklch(24.9% 0.024 157.2) |
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 #18251D | 15.89:1 | AAA | Lc -105.4 | Preferred for body text |
| Black text on #18251D | 1.32:1 | Fails | Lc 0.0 | Not readable |
| #18251D text on white | 15.89:1 | AAA | Lc 102.8 | Preferred for body text |
| #18251D text on black | 1.32:1 | 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
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D1DCD5
oklch(88.4% 0.015 158.2)
-
Step 300
300
#B3C6BA
oklch(80.9% 0.027 158.1)
-
Step 400
400
#8AA996
oklch(70.6% 0.044 158.2)
-
Step 500
500
#6D947C
oklch(63.1% 0.056 157.3)
-
Step 600
600
#547F65
oklch(55.7% 0.063 157.1)
-
Step 700
700
#446B54
oklch(49.2% 0.058 157.6)
-
Step 800
800
#385745
oklch(42.7% 0.048 158.1)
-
Step 900
900
#31483A
oklch(37.8% 0.037 157.4)
-
Step 950
950 (this color)
#18251D
oklch(24.9% 0.024 157.2)
#18251D 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) | #25231D | 0.023 |
| Deuteranopia (no green cones) | #23211D | 0.023 |
| Tritanopia (no blue cones) | #162523 | 0.011 |
| Achromatopsia (no color) | #222222 | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #18251D
#18251D
oklch(24.9% 0.024 157.2)
- #291D26
#291D26
oklch(24.9% 0.025 335.4)
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 #18251D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.029
- Dark #1B2431 ΔE 0.040
- Rich Black #0D1B2A ΔE 0.054
- Oxford Blue #1B263B ΔE 0.057
- Dark Brown #341C02 ΔE 0.060
- Dark Forest Green #002D04 ΔE 0.061
- Very Dark Green #062E03 ΔE 0.062
- Pakistan Green #283618 ΔE 0.071
Use #18251D 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.