#373C2A
Closest named color: Onyx (#343A40). oklch(34.6% 0.031 120.6), rgb(55, 60, 42).
Aa
White text reads best on this color (11.39:1).
About this color
#373C2A is a dark, muted brown. In OKLCH its lightness is 35%, its chroma 0.031 and its hue 121°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.040 away. White text reads best on it, at 11.39:1.
| Hue family | Browns |
| Lightness | dark (35%) |
| Chroma | muted (0.031) |
| Temperature | in between |
| Nearest name | Onyx (#343A40) |
| Black text | 1.84:1 |
| White text | 11.39:1 |
Values
| HEX | #373C2A |
| RGB | rgb(55, 60, 42) |
| HSL | hsl(77, 18%, 20%) |
| OKLCH | oklch(34.6% 0.031 120.6) |
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 #373C2A | 11.39:1 | AAA | Lc -100.0 | Preferred for body text |
| Black text on #373C2A | 1.84:1 | Fails | Lc 7.6 | Not readable |
| #373C2A text on white | 11.39:1 | AAA | Lc 96.3 | Preferred for body text |
| #373C2A 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
#F5F6F3
oklch(97.2% 0.004 121.6)
-
Step 100
100
#E9EAE6
oklch(93.5% 0.005 117.9)
-
Step 200
200
#D8DAD1
oklch(88.4% 0.012 116.8)
-
Step 300
300
#BEC3B3
oklch(80.9% 0.023 121.1)
-
Step 400
400
#9DA48B
oklch(70.6% 0.036 120)
-
Step 500
500
#858E6E
oklch(63.1% 0.047 120.5)
-
Step 600
600
#6F7856
oklch(55.6% 0.051 120.1)
-
Step 700
700
#5D6546
oklch(49.1% 0.048 120)
-
Step 800
800
#4C523A
oklch(42.6% 0.039 119.5)
-
Step 900
900 (this color)
#373C2A
oklch(34.6% 0.031 120.6)
-
Step 950
950
#25281D
oklch(27% 0.02 120.1)
#373C2A 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) | #3E3A29 | 0.013 |
| Deuteranopia (no green cones) | #3E3A2B | 0.014 |
| Tritanopia (no blue cones) | #393A37 | 0.025 |
| Achromatopsia (no color) | #3A3A3A | 0.031 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373C2A
#373C2A
oklch(34.6% 0.031 120.6)
- #3C3647
#3C3647
oklch(34.6% 0.03 301)
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 #373C2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.040
- Charcoal Grey #3C4142 ΔE 0.040
- Pakistan Green #283618 ΔE 0.041
- Dark Olive #373E02 ΔE 0.047
- Evergreen #05472A ΔE 0.059
- Gunmetal #293241 ΔE 0.064
- Charcoal #264653 ΔE 0.067
- Dark Blue Grey #1F3B4D ΔE 0.067
Use #373C2A 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.