#252F37
Closest named color: Gunmetal (#293241). oklch(29.9% 0.02 242.5), rgb(37, 47, 55).
Aa
White text reads best on this color (13.63:1).
About this color
#252F37 is a dark close to neutral grey. In OKLCH its lightness is 30%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Gunmetal (#293241), ΔE 0.020 away. White text reads best on it, at 13.63:1.
| Hue family | Neutrals |
| Lightness | dark (30%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Gunmetal (#293241) |
| Black text | 1.54:1 |
| White text | 13.63:1 |
Values
| HEX | #252F37 |
| RGB | rgb(37, 47, 55) |
| HSL | hsl(207, 20%, 18%) |
| OKLCH | oklch(29.9% 0.02 242.5) |
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 #252F37 | 13.63:1 | AAA | Lc -103.3 | Preferred for body text |
| Black text on #252F37 | 1.54:1 | Fails | Lc 0.0 | Not readable |
| #252F37 text on white | 13.63:1 | AAA | Lc 100.2 | Preferred for body text |
| #252F37 text on black | 1.54:1 | 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
#F4F6F7
oklch(97.2% 0.003 228.8)
-
Step 100
100
#E6EAEE
oklch(93.5% 0.007 247.9)
-
Step 200
200
#D2DAE1
oklch(88.4% 0.013 244.3)
-
Step 300
300
#B4C3CF
oklch(80.9% 0.024 242)
-
Step 400
400
#8DA4B7
oklch(70.7% 0.038 243.2)
-
Step 500
500
#708DA5
oklch(63% 0.049 243.6)
-
Step 600
600
#587790
oklch(55.5% 0.053 243.2)
-
Step 700
700
#48647B
oklch(49% 0.05 243.8)
-
Step 800
800
#3B5264
oklch(42.7% 0.041 242.4)
-
Step 900
900
#334451
oklch(37.7% 0.031 241.6)
-
Step 950
950 (this color)
#252F37
oklch(29.9% 0.02 242.5)
#252F37 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) | #2C2F37 | 0.011 |
| Deuteranopia (no green cones) | #292D37 | 0.009 |
| Tritanopia (no blue cones) | #203132 | 0.015 |
| Achromatopsia (no color) | #2E2E2E | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #252F37
#252F37
oklch(29.9% 0.02 242.5)
- #352C23
#352C23
oklch(30% 0.02 66.9)
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 #252F37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Gunmetal #293241 ΔE 0.020
- Space Cadet #2B2D42 ΔE 0.026
- Jet #212529 ΔE 0.039
- Oxford Blue #1B263B ΔE 0.039
- Dark #1B2431 ΔE 0.043
- Onyx #343A40 ΔE 0.046
- Dark Blue Grey #1F3B4D ΔE 0.048
- Midnight Green #073B4C ΔE 0.050
Use #252F37 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.