#394037
Closest named color: Charcoal Grey (#3C4142). oklch(36.2% 0.018 138.7), rgb(57, 64, 55).
Aa
White text reads best on this color (10.70:1).
About this color
#394037 is a dark close to neutral grey. In OKLCH its lightness is 36%, its chroma 0.018. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.019 away. White text reads best on it, at 10.70:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.018) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 1.96:1 |
| White text | 10.70:1 |
Values
| HEX | #394037 |
| RGB | rgb(57, 64, 55) |
| HSL | hsl(107, 8%, 23%) |
| OKLCH | oklch(36.2% 0.018 138.7) |
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 #394037 | 10.70:1 | AAA | Lc -98.7 | Preferred for body text |
| Black text on #394037 | 1.96:1 | Fails | Lc 9.1 | Not readable |
| #394037 text on white | 10.70:1 | AAA | Lc 94.8 | Preferred for body text |
| #394037 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
#F5F6F4
oklch(97.2% 0.003 128.5)
-
Step 100
100
#E8EAE8
oklch(93.5% 0.003 145.5)
-
Step 200
200
#D7DAD6
oklch(88.5% 0.006 137.8)
-
Step 300
300
#BCC3BB
oklch(80.9% 0.013 141.8)
-
Step 400
400
#9AA497
oklch(70.7% 0.022 138.4)
-
Step 500
500
#818E7E
oklch(63.1% 0.028 139.8)
-
Step 600
600
#6B7867
oklch(55.7% 0.03 138.3)
-
Step 700
700
#596556
oklch(49.2% 0.028 139.4)
-
Step 800
800
#495246
oklch(42.7% 0.023 137.9)
-
Step 900
900 (this color)
#394037
oklch(36.2% 0.018 138.7)
-
Step 950
950
#242823
oklch(27.1% 0.011 139.4)
#394037 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) | #413E37 | 0.014 |
| Deuteranopia (no green cones) | #3F3E37 | 0.011 |
| Tritanopia (no blue cones) | #393F3D | 0.012 |
| Achromatopsia (no color) | #3E3E3E | 0.018 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #394037
#394037
oklch(36.2% 0.018 138.7)
- #423B44
#423B44
oklch(36.3% 0.018 318.7)
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 #394037, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.019
- Onyx #343A40 ΔE 0.031
- Charcoal #264653 ΔE 0.048
- Dark Slate Gray #2F4F4F ΔE 0.052
- Dark Blue Grey #1F3B4D ΔE 0.057
- Dark Grey Blue #29465B ΔE 0.060
- Dark Teal #014D4E ΔE 0.060
- Pakistan Green #283618 ΔE 0.061
Use #394037 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.