#373E2F
Closest named color: Charcoal Grey (#3C4142). oklch(35.2% 0.027 128.1), rgb(55, 62, 47).
Aa
White text reads best on this color (11.09:1).
About this color
#373E2F is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.033 away. White text reads best on it, at 11.09:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.89:1 |
| White text | 11.09:1 |
Values
| HEX | #373E2F |
| RGB | rgb(55, 62, 47) |
| HSL | hsl(88, 14%, 21%) |
| OKLCH | oklch(35.2% 0.027 128.1) |
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 #373E2F | 11.09:1 | AAA | Lc -99.5 | Preferred for body text |
| Black text on #373E2F | 1.89:1 | Fails | Lc 8.2 | Not readable |
| #373E2F text on white | 11.09:1 | AAA | Lc 95.7 | Preferred for body text |
| #373E2F text on black | 1.89:1 | 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
#E9EBE6
oklch(93.7% 0.007 124.5)
-
Step 200
200
#D7DBD3
oklch(88.6% 0.012 128.6)
-
Step 300
300
#BDC3B6
oklch(80.9% 0.019 127.2)
-
Step 400
400
#9BA590
oklch(70.8% 0.032 128)
-
Step 500
500
#828F74
oklch(63.2% 0.042 128.5)
-
Step 600
600
#6C795D
oklch(55.7% 0.045 128)
-
Step 700
700
#5A654C
oklch(49% 0.041 127.2)
-
Step 800
800
#49533F
oklch(42.7% 0.034 129.4)
-
Step 900
900 (this color)
#373E2F
oklch(35.2% 0.027 128.1)
-
Step 950
950
#24281F
oklch(27% 0.017 127.1)
#373E2F 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) | #403C2E | 0.016 |
| Deuteranopia (no green cones) | #3F3B30 | 0.017 |
| Tritanopia (no blue cones) | #383D3A | 0.020 |
| Achromatopsia (no color) | #3C3C3C | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #373E2F
#373E2F
oklch(35.2% 0.027 128.1)
- #3F3846
#3F3846
oklch(35.3% 0.026 307.7)
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 #373E2F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.033
- Onyx #343A40 ΔE 0.036
- Pakistan Green #283618 ΔE 0.048
- Dark Olive #373E02 ΔE 0.052
- Evergreen #05472A ΔE 0.058
- Charcoal #264653 ΔE 0.059
- Dark Slate Gray #2F4F4F ΔE 0.063
- Dark Blue Grey #1F3B4D ΔE 0.063
Use #373E2F 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.