#304237
Closest named color: Charcoal Grey (#3C4142). oklch(36% 0.03 157.7), rgb(48, 66, 55).
Aa
White text reads best on this color (10.71:1).
About this color
#304237 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.030. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.029 away. White text reads best on it, at 10.71:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.030) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.96:1 |
| White text | 10.71:1 |
Values
| HEX | #304237 |
| RGB | rgb(48, 66, 55) |
| HSL | hsl(143, 16%, 22%) |
| OKLCH | oklch(36% 0.03 157.7) |
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 #304237 | 10.71:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #304237 | 1.96:1 | Fails | Lc 9.1 | Not readable |
| #304237 text on white | 10.71:1 | AAA | Lc 94.8 | Preferred for body text |
| #304237 text on black | 1.96:1 | Fails | Lc -7.8 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E6EBE8
oklch(93.5% 0.007 160.1)
-
Step 200
200
#D3DCD6
oklch(88.6% 0.013 157)
-
Step 300
300
#B5C5BB
oklch(80.8% 0.022 158.5)
-
Step 400
400
#8FA898
oklch(70.8% 0.036 157.3)
-
Step 500
500
#73927F
oklch(63.1% 0.045 157.9)
-
Step 600
600
#5B7C68
oklch(55.5% 0.049 157.8)
-
Step 700
700
#4A6957
oklch(49.1% 0.046 158.7)
-
Step 800
800
#3D5647
oklch(42.8% 0.039 157.9)
-
Step 900
900 (this color)
#304237
oklch(36% 0.03 157.7)
-
Step 950
950
#1F2923
oklch(26.9% 0.018 158.6)
#304237 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) | #423F36 | 0.029 |
| Deuteranopia (no green cones) | #3F3D38 | 0.028 |
| Tritanopia (no blue cones) | #2D423F | 0.014 |
| Achromatopsia (no color) | #3E3E3E | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304237
#304237
oklch(36% 0.03 157.7)
- #483743
#483743
oklch(36% 0.031 337.1)
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 #304237, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.029
- Onyx #343A40 ΔE 0.036
- Charcoal #264653 ΔE 0.046
- Dark Slate Gray #2F4F4F ΔE 0.049
- Dark Teal #014D4E ΔE 0.050
- Evergreen #05472A ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.055
- Dark Blue Green #005249 ΔE 0.056
Use #304237 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.