#373C2E
Closest named color: Onyx (#343A40). oklch(34.7% 0.024 123.6), rgb(55, 60, 46).
Aa
White text reads best on this color (11.36:1).
About this color
#373C2E is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.034 away. White text reads best on it, at 11.36:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.84:1 |
| White text | 11.36:1 |
Values
| HEX | #373C2E |
| RGB | rgb(55, 60, 46) |
| HSL | hsl(81, 13%, 21%) |
| OKLCH | oklch(34.7% 0.024 123.6) |
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 #373C2E | 11.36:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #373C2E | 1.84:1 | Fails | Lc 7.7 | Not readable |
| #373C2E text on white | 11.36:1 | AAA | Lc 96.2 | Preferred for body text |
| #373C2E text on black | 1.84:1 | 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
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E9EAE7
oklch(93.5% 0.004 121.6)
-
Step 200
200
#D8DAD3
oklch(88.5% 0.01 119.6)
-
Step 300
300
#BEC3B6
oklch(81% 0.019 124)
-
Step 400
400
#9DA490
oklch(70.7% 0.029 122.9)
-
Step 500
500
#858E75
oklch(63.2% 0.038 123.6)
-
Step 600
600
#6E785D
oklch(55.7% 0.042 124.3)
-
Step 700
700
#5C654D
oklch(49.2% 0.039 124.5)
-
Step 800
800
#4B523F
oklch(42.6% 0.032 124.2)
-
Step 900
900 (this color)
#373C2E
oklch(34.7% 0.024 123.6)
-
Step 950
950
#252820
oklch(27.1% 0.015 124.1)
#373C2E 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) | #3E3A2D | 0.013 |
| Deuteranopia (no green cones) | #3D3A2F | 0.012 |
| Tritanopia (no blue cones) | #383B38 | 0.019 |
| Achromatopsia (no color) | #3A3A3A | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373C2E
#373C2E
oklch(34.7% 0.024 123.6)
- #3C3744
#3C3744
oklch(34.7% 0.023 302.7)
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 #373C2E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.034
- Charcoal Grey #3C4142 ΔE 0.035
- Pakistan Green #283618 ΔE 0.045
- Dark Olive #373E02 ΔE 0.054
- Gunmetal #293241 ΔE 0.059
- Evergreen #05472A ΔE 0.061
- Dark Blue Grey #1F3B4D ΔE 0.062
- Charcoal #264653 ΔE 0.062
Use #373C2E 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.