#304239
Closest named color: Charcoal Grey (#3C4142). oklch(36% 0.028 162.9), rgb(48, 66, 57).
Aa
White text reads best on this color (10.69:1).
About this color
#304239 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.028. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.026 away. White text reads best on it, at 10.69:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.96:1 |
| White text | 10.69:1 |
Values
| HEX | #304239 |
| RGB | rgb(48, 66, 57) |
| HSL | hsl(150, 16%, 22%) |
| OKLCH | oklch(36% 0.028 162.9) |
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 #304239 | 10.69:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #304239 | 1.96:1 | Fails | Lc 9.1 | Not readable |
| #304239 text on white | 10.69:1 | AAA | Lc 94.8 | Preferred for body text |
| #304239 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
#E6EBE9
oklch(93.6% 0.006 170.4)
-
Step 200
200
#D3DCD7
oklch(88.6% 0.012 162)
-
Step 300
300
#B5C5BD
oklch(80.9% 0.021 164.5)
-
Step 400
400
#8FA79B
oklch(70.6% 0.032 163.9)
-
Step 500
500
#729282
oklch(63.1% 0.043 163.2)
-
Step 600
600
#5B7C6B
oklch(55.6% 0.046 162)
-
Step 700
700
#4A695A
oklch(49.2% 0.044 163.3)
-
Step 800
800
#3D5549
oklch(42.6% 0.035 162.7)
-
Step 900
900 (this color)
#304239
oklch(36% 0.028 162.9)
-
Step 950
950
#1F2924
oklch(27% 0.017 163.4)
#304239 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) | #413F39 | 0.027 |
| Deuteranopia (no green cones) | #3E3D3A | 0.027 |
| Tritanopia (no blue cones) | #2C423F | 0.011 |
| Achromatopsia (no color) | #3E3E3E | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #304239
#304239
oklch(36% 0.028 162.9)
- #483841
#483841
oklch(36.1% 0.027 343.7)
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 #304239, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.026
- Onyx #343A40 ΔE 0.034
- Charcoal #264653 ΔE 0.043
- Dark Slate Gray #2F4F4F ΔE 0.047
- Dark Teal #014D4E ΔE 0.049
- Dark Blue Grey #1F3B4D ΔE 0.053
- Evergreen #05472A ΔE 0.053
- Dark Blue Green #005249 ΔE 0.056
Use #304239 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.