#37392F
Closest named color: Onyx (#343A40). oklch(33.9% 0.017 116.5), rgb(55, 57, 47).
Aa
White text reads best on this color (11.74:1).
About this color
#37392F is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.017. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.028 away. White text reads best on it, at 11.74:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.017) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.78:1 |
| White text | 11.74:1 |
Values
| HEX | #37392F |
| RGB | rgb(55, 57, 47) |
| HSL | hsl(72, 10%, 20%) |
| OKLCH | oklch(33.9% 0.017 116.5) |
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 #37392F | 11.74:1 | AAA | Lc -100.6 | Preferred for body text |
| Black text on #37392F | 1.78:1 | Fails | Lc 0.0 | Not readable |
| #37392F text on white | 11.74:1 | AAA | Lc 97.0 | Preferred for body text |
| #37392F text on black | 1.78:1 | 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
#F5F5F4
oklch(97% 0.001 106.4)
-
Step 100
100
#E9EAE7
oklch(93.5% 0.004 121.6)
-
Step 200
200
#D9DAD4
oklch(88.6% 0.008 114.2)
-
Step 300
300
#C0C2B9
oklch(81% 0.013 116.9)
-
Step 400
400
#9FA294
oklch(70.6% 0.02 116.7)
-
Step 500
500
#888C7A
oklch(63.2% 0.027 117.3)
-
Step 600
600
#727663
oklch(55.7% 0.029 117)
-
Step 700
700
#5F6352
oklch(49.1% 0.027 118.1)
-
Step 800
800
#4E5143
oklch(42.8% 0.023 117.2)
-
Step 900
900 (this color)
#37392F
oklch(33.9% 0.017 116.5)
-
Step 950
950
#262721
oklch(27% 0.011 114.8)
#37392F 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) | #3B382E | 0.007 |
| Deuteranopia (no green cones) | #3A382F | 0.006 |
| Tritanopia (no blue cones) | #383836 | 0.014 |
| Achromatopsia (no color) | #383838 | 0.017 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #37392F
#37392F
oklch(33.9% 0.017 116.5)
- #383640
#383640
oklch(33.9% 0.018 294.6)
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 #37392F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.028
- Charcoal Grey #3C4142 ΔE 0.037
- Pakistan Green #283618 ΔE 0.046
- Gunmetal #293241 ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.057
- Dark Olive #373E02 ΔE 0.061
- Charcoal #264653 ΔE 0.063
- Space Cadet #2B2D42 ΔE 0.064
Use #37392F 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.