#25212E
Closest named color: Dark (#1B2431). oklch(25.8% 0.025 298.8), rgb(37, 33, 46).
Aa
White text reads best on this color (15.72:1).
About this color
#25212E is a dark close to neutral grey. In OKLCH its lightness is 26%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Dark (#1B2431), ΔE 0.019 away. White text reads best on it, at 15.72:1.
| Hue family | Neutrals |
| Lightness | dark (26%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Dark (#1B2431) |
| Black text | 1.33:1 |
| White text | 15.72:1 |
Values
| HEX | #25212E |
| RGB | rgb(37, 33, 46) |
| HSL | hsl(258, 16%, 15%) |
| OKLCH | oklch(25.8% 0.025 298.8) |
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 #25212E | 15.72:1 | AAA | Lc -105.3 | Preferred for body text |
| Black text on #25212E | 1.33:1 | Fails | Lc 0.0 | Not readable |
| #25212E text on white | 15.72:1 | AAA | Lc 102.7 | Preferred for body text |
| #25212E text on black | 1.33:1 | 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
#F6F5F8
oklch(97.2% 0.004 301.4)
-
Step 100
100
#EAE9EF
oklch(93.7% 0.008 293.9)
-
Step 200
200
#DAD7E3
oklch(88.5% 0.017 297.5)
-
Step 300
300
#C3BDD1
oklch(80.9% 0.029 299.4)
-
Step 400
400
#A49BBA
oklch(70.7% 0.046 298.5)
-
Step 500
500
#8E82A9
oklch(63.1% 0.059 298.8)
-
Step 600
600
#786B95
oklch(55.6% 0.066 298.4)
-
Step 700
700
#65597F
oklch(49.1% 0.061 298.6)
-
Step 800
800
#524967
oklch(42.7% 0.05 298)
-
Step 900
900
#443D54
oklch(37.7% 0.04 298.4)
-
Step 950
950 (this color)
#25212E
oklch(25.8% 0.025 298.8)
#25212E 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) | #1E232F | 0.013 |
| Deuteranopia (no green cones) | #1F232E | 0.012 |
| Tritanopia (no blue cones) | #232325 | 0.021 |
| Achromatopsia (no color) | #232323 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #25212E
#25212E
oklch(25.8% 0.025 298.8)
- #222518
#222518
oklch(25.7% 0.024 118.6)
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 #25212E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark #1B2431 ΔE 0.019
- Jet #212529 ΔE 0.020
- Oxford Blue #1B263B ΔE 0.029
- Rich Black #0D1B2A ΔE 0.048
- Space Cadet #2B2D42 ΔE 0.050
- Gunmetal #293241 ΔE 0.060
- Dark Brown #341C02 ΔE 0.072
- Eggplant #380835 ΔE 0.076
Use #25212E 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.