#393137
Closest named color: Onyx (#343A40). oklch(32.4% 0.015 334.7), rgb(57, 49, 55).
Aa
White text reads best on this color (12.58:1).
About this color
#393137 is a dark close to neutral grey. In OKLCH its lightness is 32%, its chroma 0.015. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.029 away. White text reads best on it, at 12.58:1.
| Hue family | Neutrals |
| Lightness | dark (32%) |
| Chroma | close to neutral grey (0.015) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.66:1 |
| White text | 12.58:1 |
Values
| HEX | #393137 |
| RGB | rgb(57, 49, 55) |
| HSL | hsl(315, 8%, 21%) |
| OKLCH | oklch(32.4% 0.015 334.7) |
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 #393137 | 12.58:1 | AAA | Lc -101.9 | Preferred for body text |
| Black text on #393137 | 1.66:1 | Fails | Lc 0.0 | Not readable |
| #393137 text on white | 12.58:1 | AAA | Lc 98.6 | Preferred for body text |
| #393137 text on black | 1.66:1 | 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 900.
-
Step 50
50
#F6F5F6
oklch(97.1% 0.002 325.6)
-
Step 100
100
#EBE9EB
oklch(93.6% 0.003 325.6)
-
Step 200
200
#DCD7DB
oklch(88.4% 0.008 332.1)
-
Step 300
300
#C6BEC3
oklch(81% 0.011 339.4)
-
Step 400
400
#A89CA5
oklch(70.6% 0.019 334.3)
-
Step 500
500
#93848F
oklch(63% 0.024 335.2)
-
Step 600
600
#7D6E79
oklch(55.6% 0.025 335.3)
-
Step 700
700
#6A5C66
oklch(49.2% 0.024 336.1)
-
Step 800
800
#564B53
oklch(42.7% 0.019 335.6)
-
Step 900
900 (this color)
#393137
oklch(32.4% 0.015 334.7)
-
Step 950
950
#2A2528
oklch(27.1% 0.009 341)
#393137 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) | #313337 | 0.015 |
| Deuteranopia (no green cones) | #333437 | 0.014 |
| Tritanopia (no blue cones) | #3A3133 | 0.007 |
| Achromatopsia (no color) | #333333 | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #393137
#393137
oklch(32.4% 0.015 334.7)
- #2E3630
#2E3630
oklch(32.3% 0.015 153.1)
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 #393137, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.029
- Gunmetal #293241 ΔE 0.031
- Space Cadet #2B2D42 ΔE 0.037
- Charcoal Grey #3C4142 ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.053
- Jet #212529 ΔE 0.064
- Midnight Green #073B4C ΔE 0.065
- Prussian Blue #1D3557 ΔE 0.066
Use #393137 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.