#39424B
Closest named color: Charcoal Grey (#3C4142). oklch(37.4% 0.02 248.3), rgb(57, 66, 75).
Aa
White text reads best on this color (10.21:1).
About this color
#39424B is a dark close to neutral grey. In OKLCH its lightness is 37%, its chroma 0.020. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.015 away. White text reads best on it, at 10.21:1.
| Hue family | Neutrals |
| Lightness | dark (37%) |
| Chroma | close to neutral grey (0.020) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.05:1 |
| White text | 10.21:1 |
Values
| HEX | #39424B |
| RGB | rgb(57, 66, 75) |
| HSL | hsl(210, 14%, 26%) |
| OKLCH | oklch(37.4% 0.02 248.3) |
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 #39424B | 10.21:1 | AAA | Lc -97.8 | Preferred for body text |
| Black text on #39424B | 2.05:1 | Fails | Lc 10.2 | Not readable |
| #39424B text on white | 10.21:1 | AAA | Lc 93.7 | Preferred for body text |
| #39424B text on black | 2.05:1 | Fails | Lc -8.8 | 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
#F4F5F7
oklch(97% 0.003 264.5)
-
Step 100
100
#E8EAEC
oklch(93.6% 0.003 247.9)
-
Step 200
200
#D5DADE
oklch(88.6% 0.008 241.7)
-
Step 300
300
#BAC2CA
oklch(81% 0.014 248)
-
Step 400
400
#96A2AF
oklch(70.7% 0.023 250.3)
-
Step 500
500
#7C8B9B
oklch(63% 0.03 250)
-
Step 600
600
#657586
oklch(55.5% 0.033 250)
-
Step 700
700
#546371
oklch(49.2% 0.029 246.6)
-
Step 800
800
#44505C
oklch(42.5% 0.025 248.4)
-
Step 900
900 (this color)
#39424B
oklch(37.4% 0.02 248.3)
-
Step 950
950
#22272C
oklch(27% 0.012 248.3)
#39424B 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) | #3F424B | 0.009 |
| Deuteranopia (no green cones) | #3C404B | 0.008 |
| Tritanopia (no blue cones) | #344445 | 0.016 |
| Achromatopsia (no color) | #414141 | 0.020 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #39424B
#39424B
oklch(37.4% 0.02 248.3)
- #483F36
#483F36
oklch(37.4% 0.019 67.2)
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 #39424B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.015
- Charcoal #264653 ΔE 0.027
- Onyx #343A40 ΔE 0.030
- Dark Grey Blue #29465B ΔE 0.032
- Dark Slate Gray #2F4F4F ΔE 0.042
- Dark Blue Grey #1F3B4D ΔE 0.045
- Dark Teal #014D4E ΔE 0.055
- Gunmetal #293241 ΔE 0.060
Use #39424B 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.