#393947
Closest named color: Onyx (#343A40). oklch(35% 0.024 285.1), rgb(57, 57, 71).
Aa
White text reads best on this color (11.35:1).
About this color
#393947 is a dark close to neutral grey. In OKLCH its lightness is 35%, its chroma 0.024. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.017 away. White text reads best on it, at 11.35:1.
| Hue family | Neutrals |
| Lightness | dark (35%) |
| Chroma | close to neutral grey (0.024) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.85:1 |
| White text | 11.35:1 |
Values
| HEX | #393947 |
| RGB | rgb(57, 57, 71) |
| HSL | hsl(240, 11%, 25%) |
| OKLCH | oklch(35% 0.024 285.1) |
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 #393947 | 11.35:1 | AAA | Lc -99.9 | Preferred for body text |
| Black text on #393947 | 1.85:1 | Fails | Lc 7.7 | Not readable |
| #393947 text on white | 11.35:1 | AAA | Lc 96.2 | Preferred for body text |
| #393947 text on black | 1.85:1 | 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
#E9E9ED
oklch(93.5% 0.005 286.3)
-
Step 200
200
#D8D8E0
oklch(88.5% 0.011 286.2)
-
Step 300
300
#BFBFCC
oklch(80.9% 0.018 286)
-
Step 400
400
#9E9EB3
oklch(70.6% 0.03 285.6)
-
Step 500
500
#8787A0
oklch(63.2% 0.037 285.3)
-
Step 600
600
#70708B
oklch(55.5% 0.042 285)
-
Step 700
700
#5E5E76
oklch(49.1% 0.038 284.9)
-
Step 800
800
#4D4D60
oklch(42.8% 0.031 285)
-
Step 900
900 (this color)
#393947
oklch(35% 0.024 285.1)
-
Step 950
950
#25252E
oklch(26.8% 0.017 285.2)
#393947 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) | #363B48 | 0.007 |
| Deuteranopia (no green cones) | #353A47 | 0.007 |
| Tritanopia (no blue cones) | #363B3E | 0.020 |
| Achromatopsia (no color) | #3A3A3A | 0.024 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #393947
#393947
oklch(35% 0.024 285.1)
- #3C3B2D
#3C3B2D
oklch(34.9% 0.023 104.1)
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 #393947, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.017
- Charcoal Grey #3C4142 ΔE 0.031
- Dark Blue Grey #1F3B4D ΔE 0.037
- Gunmetal #293241 ΔE 0.037
- Charcoal #264653 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.047
- Dark Grey Blue #29465B ΔE 0.048
- Prussian Blue #1D3557 ΔE 0.053
Use #393947 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.