#25181D
Closest named color: Jet (#212529). oklch(22.8% 0.023 354.2), rgb(37, 24, 29).
Aa
White text reads best on this color (17.11:1).
About this color
#25181D is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.044 away. White text reads best on it, at 17.11:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.22:1 |
| White text | 17.11:1 |
Values
| HEX | #25181D |
| RGB | rgb(37, 24, 29) |
| HSL | hsl(337, 21%, 12%) |
| OKLCH | oklch(22.8% 0.023 354.2) |
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 #25181D | 17.11:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #25181D | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #25181D text on white | 17.11:1 | AAA | Lc 104.0 | Preferred for body text |
| #25181D text on black | 1.22:1 | 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
#F7F4F5
oklch(97% 0.003 354.7)
-
Step 100
100
#EEE8EA
oklch(93.6% 0.007 354.8)
-
Step 200
200
#E2D5DA
oklch(88.5% 0.016 352)
-
Step 300
300
#D0BAC2
oklch(81% 0.027 353.7)
-
Step 400
400
#B796A2
oklch(70.7% 0.043 354.4)
-
Step 500
500
#A57C8C
oklch(63.1% 0.055 353.6)
-
Step 600
600
#906575
oklch(55.6% 0.06 355.1)
-
Step 700
700
#7A5463
oklch(49.2% 0.055 353.9)
-
Step 800
800
#634551
oklch(42.8% 0.045 353.4)
-
Step 900
900
#513A43
oklch(37.7% 0.035 353.6)
-
Step 950
950 (this color)
#25181D
oklch(22.8% 0.023 354.2)
#25181D 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) | #191A1D | 0.025 |
| Deuteranopia (no green cones) | #1C1C1D | 0.022 |
| Tritanopia (no blue cones) | #27181A | 0.007 |
| Achromatopsia (no color) | #1C1C1C | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25181D
#25181D
oklch(22.8% 0.023 354.2)
- #11201C
#11201C
oklch(22.8% 0.022 175.6)
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 #25181D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.044
- Rich Black #0D1B2A ΔE 0.047
- Dark #1B2431 ΔE 0.048
- Dark Brown #341C02 ΔE 0.057
- Oxford Blue #1B263B ΔE 0.064
- Dark Maroon #3C0008 ΔE 0.071
- Chocolate Brown #411900 ΔE 0.075
- Rich Navy #001219 ΔE 0.077
Use #25181D 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.