#393840
Closest named color: Onyx (#343A40). oklch(34.5% 0.014 291.4), rgb(57, 56, 64).
Aa
White text reads best on this color (11.57:1).
About this color
#393840 is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.014. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.010 away. White text reads best on it, at 11.57:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.014) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.81:1 |
| White text | 11.57:1 |
Values
| HEX | #393840 |
| RGB | rgb(57, 56, 64) |
| HSL | hsl(248, 7%, 24%) |
| OKLCH | oklch(34.5% 0.014 291.4) |
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 #393840 | 11.57:1 | AAA | Lc -100.3 | Preferred for body text |
| Black text on #393840 | 1.81:1 | Fails | Lc 0.0 | Not readable |
| #393840 text on white | 11.57:1 | AAA | Lc 96.7 | Preferred for body text |
| #393840 text on black | 1.81:1 | 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
#F5F5F6
oklch(97% 0.001 286.4)
-
Step 100
100
#EAE9EC
oklch(93.6% 0.004 301.4)
-
Step 200
200
#D9D8DD
oklch(88.4% 0.007 295.4)
-
Step 300
300
#C0BFC7
oklch(80.8% 0.011 291.9)
-
Step 400
400
#A09FAA
oklch(70.7% 0.016 290.2)
-
Step 500
500
#898796
oklch(63% 0.022 291.9)
-
Step 600
600
#737180
oklch(55.6% 0.023 291.8)
-
Step 700
700
#605F6C
oklch(49.1% 0.021 289.1)
-
Step 800
800
#4F4D58
oklch(42.6% 0.018 294)
-
Step 900
900 (this color)
#393840
oklch(34.5% 0.014 291.4)
-
Step 950
950
#26262A
oklch(27% 0.007 285.9)
#393840 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) | #363940 | 0.006 |
| Deuteranopia (no green cones) | #363940 | 0.006 |
| Tritanopia (no blue cones) | #38393B | 0.011 |
| Achromatopsia (no color) | #393939 | 0.014 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
This color is close to neutral, so it has no meaningful hue to rotate. Hue harmonies are omitted.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #393840, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.010
- Charcoal Grey #3C4142 ΔE 0.030
- Gunmetal #293241 ΔE 0.035
- Dark Blue Grey #1F3B4D ΔE 0.040
- Space Cadet #2B2D42 ΔE 0.047
- Charcoal #264653 ΔE 0.050
- Dark Grey Blue #29465B ΔE 0.056
- Midnight Green #073B4C ΔE 0.057
Use #393840 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.