#394440
Closest named color: Charcoal Grey (#3C4142). oklch(37.5% 0.016 171.5), rgb(57, 68, 64).
Aa
White text reads best on this color (10.12:1).
About this color
#394440 is a dark close to neutral grey. In OKLCH its lightness is 38%, its chroma 0.016. It has too little chroma to lean warm or cool. The nearest named color is Charcoal Grey (#3C4142), ΔE 0.012 away. White text reads best on it, at 10.12:1.
| Hue family | Neutrals |
| Lightness | dark (38%) |
| Chroma | close to neutral grey (0.016) |
| Temperature | neutral |
| Nearest name | Charcoal Grey (#3C4142) |
| Black text | 2.07:1 |
| White text | 10.12:1 |
Values
| HEX | #394440 |
| RGB | rgb(57, 68, 64) |
| HSL | hsl(158, 9%, 25%) |
| OKLCH | oklch(37.5% 0.016 171.5) |
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 #394440 | 10.12:1 | AAA | Lc -97.6 | Preferred for body text |
| Black text on #394440 | 2.07:1 | Fails | Lc 10.4 | Not readable |
| #394440 text on white | 10.12:1 | AAA | Lc 93.5 | Preferred for body text |
| #394440 text on black | 2.07:1 | Fails | Lc -9.0 | 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
#F4F6F5
oklch(97.1% 0.002 165.1)
-
Step 100
100
#E8EAE9
oklch(93.5% 0.003 165.1)
-
Step 200
200
#D5DAD8
oklch(88.4% 0.006 170.4)
-
Step 300
300
#B9C3BF
oklch(80.8% 0.012 170.2)
-
Step 400
400
#95A59F
oklch(70.8% 0.02 171.2)
-
Step 500
500
#7B8E88
oklch(63% 0.024 174.5)
-
Step 600
600
#647971
oklch(55.7% 0.028 170.2)
-
Step 700
700
#53655F
oklch(49% 0.024 173.1)
-
Step 800
800
#44534D
oklch(42.7% 0.021 169.1)
-
Step 900
900 (this color)
#394440
oklch(37.5% 0.016 171.5)
-
Step 950
950
#222826
oklch(27% 0.009 173.5)
#394440 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) | #434240 | 0.017 |
| Deuteranopia (no green cones) | #414140 | 0.015 |
| Tritanopia (no blue cones) | #374443 | 0.006 |
| Achromatopsia (no color) | #424242 | 0.016 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #394440
#394440
oklch(37.5% 0.016 171.5)
- #483E42
#483E42
oklch(37.6% 0.015 351.7)
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 #394440, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Charcoal Grey #3C4142 ΔE 0.012
- Onyx #343A40 ΔE 0.035
- Dark Slate Gray #2F4F4F ΔE 0.037
- Charcoal #264653 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.047
- Dark Teal #014D4E ΔE 0.051
- Dark Blue Grey #1F3B4D ΔE 0.056
- Dark Blue Green #005249 ΔE 0.058
Use #394440 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.