#25181F
Closest named color: Jet (#212529). oklch(22.9% 0.024 345.7), rgb(37, 24, 31).
Aa
White text reads best on this color (17.08:1).
About this color
#25181F is a very dark close to neutral grey. In OKLCH its lightness is 23%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Jet (#212529), ΔE 0.043 away. White text reads best on it, at 17.08:1.
| Hue family | Neutrals |
| Lightness | very dark (23%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Jet (#212529) |
| Black text | 1.22:1 |
| White text | 17.08:1 |
Values
| HEX | #25181F |
| RGB | rgb(37, 24, 31) |
| HSL | hsl(328, 21%, 12%) |
| OKLCH | oklch(22.9% 0.024 345.7) |
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 #25181F | 17.08:1 | AAA | Lc -106.3 | Preferred for body text |
| Black text on #25181F | 1.22:1 | Fails | Lc 0.0 | Not readable |
| #25181F text on white | 17.08:1 | AAA | Lc 104.0 | Preferred for body text |
| #25181F 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
#F7F4F6
oklch(97% 0.004 337.4)
-
Step 100
100
#EEE8EB
oklch(93.7% 0.008 345.4)
-
Step 200
200
#E1D5DB
oklch(88.4% 0.015 345.6)
-
Step 300
300
#CFBAC5
oklch(81% 0.028 344.8)
-
Step 400
400
#B796A7
oklch(70.8% 0.046 345.9)
-
Step 500
500
#A47B91
oklch(63% 0.059 345.5)
-
Step 600
600
#8F647B
oklch(55.5% 0.064 346.1)
-
Step 700
700
#795368
oklch(49% 0.059 345.2)
-
Step 800
800
#634455
oklch(42.7% 0.05 345.4)
-
Step 900
900
#513946
oklch(37.6% 0.039 345.5)
-
Step 950
950 (this color)
#25181F
oklch(22.9% 0.024 345.7)
#25181F 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) | #191B1F | 0.025 |
| Deuteranopia (no green cones) | #1C1D1F | 0.024 |
| Tritanopia (no blue cones) | #27181A | 0.010 |
| Achromatopsia (no color) | #1C1C1C | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25181F
#25181F
oklch(22.9% 0.024 345.7)
- #11201A
#11201A
oklch(22.8% 0.024 167.1)
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 #25181F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Jet #212529 ΔE 0.043
- Rich Black #0D1B2A ΔE 0.046
- Dark #1B2431 ΔE 0.047
- Dark Brown #341C02 ΔE 0.060
- Oxford Blue #1B263B ΔE 0.061
- Dark Maroon #3C0008 ΔE 0.072
- Eggplant #380835 ΔE 0.074
- Chocolate Brown #411900 ΔE 0.077
Use #25181F 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.