#393744
Closest named color: Onyx (#343A40). oklch(34.4% 0.023 292.2), rgb(57, 55, 68).
Aa
White text reads best on this color (11.64:1).
About this color
#393744 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.023. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.016 away. White text reads best on it, at 11.64:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.023) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.80:1 |
| White text | 11.64:1 |
Values
| HEX | #393744 |
| RGB | rgb(57, 55, 68) |
| HSL | hsl(249, 11%, 24%) |
| OKLCH | oklch(34.4% 0.023 292.2) |
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 #393744 | 11.64:1 | AAA | Lc -100.4 | Preferred for body text |
| Black text on #393744 | 1.80:1 | Fails | Lc 0.0 | Not readable |
| #393744 text on white | 11.64:1 | AAA | Lc 96.8 | Preferred for body text |
| #393744 text on black | 1.80:1 | Fails | Lc 0.0 | 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
#F5F5F7
oklch(97.1% 0.003 286.4)
-
Step 100
100
#EAE9ED
oklch(93.6% 0.005 297.7)
-
Step 200
200
#D9D8DF
oklch(88.5% 0.01 292.8)
-
Step 300
300
#C0BFCB
oklch(80.9% 0.017 289.9)
-
Step 400
400
#A19EB1
oklch(70.8% 0.028 292.9)
-
Step 500
500
#89869D
oklch(63% 0.034 291.4)
-
Step 600
600
#737088
oklch(55.6% 0.037 290.9)
-
Step 700
700
#615D73
oklch(49% 0.035 293.4)
-
Step 800
800
#4F4C5E
oklch(42.6% 0.03 292.7)
-
Step 900
900 (this color)
#393744
oklch(34.4% 0.023 292.2)
-
Step 950
950
#26252D
oklch(26.9% 0.015 291.1)
#393744 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) | #343945 | 0.010 |
| Deuteranopia (no green cones) | #343844 | 0.009 |
| Tritanopia (no blue cones) | #37393B | 0.020 |
| Achromatopsia (no color) | #383838 | 0.023 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #393744
#393744
oklch(34.4% 0.023 292.2)
- #393A2D
#393A2D
oklch(34.3% 0.022 111.1)
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 #393744, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.016
- Gunmetal #293241 ΔE 0.033
- Charcoal Grey #3C4142 ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.038
- Space Cadet #2B2D42 ΔE 0.043
- Charcoal #264653 ΔE 0.051
- Prussian Blue #1D3557 ΔE 0.054
- Dark Grey Blue #29465B ΔE 0.054
Use #393744 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.