#393C4C
Closest named color: Onyx (#343A40). oklch(36% 0.028 276.6), rgb(57, 60, 76).
Aa
White text reads best on this color (10.91:1).
About this color
#393C4C 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 Onyx (#343A40), ΔE 0.023 away. White text reads best on it, at 10.91:1.
| Hue family | Neutrals |
| Lightness | dark (36%) |
| Chroma | close to neutral grey (0.028) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.92:1 |
| White text | 10.91:1 |
Values
| HEX | #393C4C |
| RGB | rgb(57, 60, 76) |
| HSL | hsl(231, 14%, 26%) |
| OKLCH | oklch(36% 0.028 276.6) |
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 #393C4C | 10.91:1 | AAA | Lc -99.1 | Preferred for body text |
| Black text on #393C4C | 1.92:1 | Fails | Lc 8.6 | Not readable |
| #393C4C text on white | 10.91:1 | AAA | Lc 95.3 | Preferred for body text |
| #393C4C text on black | 1.92:1 | Fails | Lc -7.4 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#E9E9EE
oklch(93.5% 0.007 286.3)
-
Step 200
200
#D7D9E1
oklch(88.6% 0.011 274.9)
-
Step 300
300
#BDC0CE
oklch(81% 0.02 276.3)
-
Step 400
400
#9B9FB6
oklch(70.7% 0.034 277.7)
-
Step 500
500
#8288A4
oklch(63.2% 0.043 275.6)
-
Step 600
600
#6C718F
oklch(55.6% 0.047 277.4)
-
Step 700
700
#5A5F7A
oklch(49.2% 0.044 276.5)
-
Step 800
800
#4A4D63
oklch(42.6% 0.037 278.7)
-
Step 900
900 (this color)
#393C4C
oklch(36% 0.028 276.6)
-
Step 950
950
#24262F
oklch(27% 0.017 275.4)
#393C4C 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) | #383D4D | 0.003 |
| Deuteranopia (no green cones) | #363C4C | 0.005 |
| Tritanopia (no blue cones) | #353F41 | 0.026 |
| Achromatopsia (no color) | #3D3D3D | 0.028 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #393C4C
#393C4C
oklch(36% 0.028 276.6)
- #413D2C
#413D2C
oklch(35.9% 0.028 96.4)
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 #393C4C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.023
- Charcoal Grey #3C4142 ΔE 0.028
- Dark Blue Grey #1F3B4D ΔE 0.037
- Charcoal #264653 ΔE 0.037
- Dark Grey Blue #29465B ΔE 0.038
- Gunmetal #293241 ΔE 0.045
- Prussian Blue #1D3557 ΔE 0.053
- Midnight Green #073B4C ΔE 0.056
Use #393C4C 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.