#373F35
Closest named color: Charcoal Grey (#3C4142). oklch(35.7% 0.02 139.4), rgb(55, 63, 53).
Aa
White text reads best on this color (10.90:1).
About this color
#373F35 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.024 away. White text reads best on it, at 10.90:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.92:1 |
| White text | 10.90:1 |
Values
| HEX | #373F35 |
| RGB | rgb(55, 63, 53) |
| HSL | hsl(108, 9%, 23%) |
| OKLCH | oklch(35.7% 0.02 139.4) |
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 #373F35 | 10.90:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #373F35 | 1.92:1 | Fails | Lc 8.6 | Not readable |
| #373F35 text on white | 10.90:1 | AAA | Lc 95.3 | Preferred for body text |
| #373F35 text on black | 1.92:1 | Fails | Lc -7.4 | 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
#E8EAE8
oklch(93.5% 0.003 145.5)
-
Step 200
200
#D6DAD5
oklch(88.4% 0.008 139.4)
-
Step 300
300
#BCC3BA
oklch(80.9% 0.015 138.7)
-
Step 400
400
#99A496
oklch(70.6% 0.024 139)
-
Step 500
500
#808E7D
oklch(63% 0.03 140.2)
-
Step 600
600
#697866
oklch(55.5% 0.033 140.4)
-
Step 700
700
#586554
oklch(49% 0.031 138.3)
-
Step 800
800
#485345
oklch(42.8% 0.027 139)
-
Step 900
900 (this color)
#373F35
oklch(35.7% 0.02 139.4)
-
Step 950
950
#232822
oklch(27% 0.013 140.5)
#373F35 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) | #403D34 | 0.015 |
| Deuteranopia (no green cones) | #3E3C35 | 0.014 |
| Tritanopia (no blue cones) | #373E3C | 0.014 |
| Achromatopsia (no color) | #3D3D3D | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373F35
#373F35
oklch(35.7% 0.02 139.4)
- #413943
#413943
oklch(35.7% 0.02 319.5)
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 #373F35, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.024
- Onyx #343A40 ΔE 0.030
- Charcoal #264653 ΔE 0.051
- Dark Slate Gray #2F4F4F ΔE 0.056
- Pakistan Green #283618 ΔE 0.056
- Dark Blue Grey #1F3B4D ΔE 0.056
- Gunmetal #293241 ΔE 0.060
- Dark Olive #373E02 ΔE 0.061
Use #373F35 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.