#3F352B
Closest named color: Onyx (#343A40). oklch(33.7% 0.022 67), rgb(63, 53, 43).
Aa
White text reads best on this color (11.96:1).
About this color
#3F352B is a dark close to neutral grey. In OKLCH its lightness is 34%, its chroma 0.022. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.036 away. White text reads best on it, at 11.96:1.
| Hue family | Neutrals |
| Lightness | dark (34%) |
| Chroma | close to neutral grey (0.022) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.75:1 |
| White text | 11.96:1 |
Values
| HEX | #3F352B |
| RGB | rgb(63, 53, 43) |
| HSL | hsl(30, 19%, 21%) |
| OKLCH | oklch(33.7% 0.022 67) |
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 #3F352B | 11.96:1 | AAA | Lc -101.0 | Preferred for body text |
| Black text on #3F352B | 1.75:1 | Fails | Lc 0.0 | Not readable |
| #3F352B text on white | 11.96:1 | AAA | Lc 97.4 | Preferred for body text |
| #3F352B text on black | 1.75:1 | 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
#F6F5F4
oklch(97.1% 0.002 67.8)
-
Step 100
100
#ECE9E6
oklch(93.6% 0.005 67.8)
-
Step 200
200
#DDD8D3
oklch(88.5% 0.009 67.7)
-
Step 300
300
#C8BFB6
oklch(80.9% 0.016 67.6)
-
Step 400
400
#AC9E8F
oklch(70.7% 0.027 69.3)
-
Step 500
500
#988674
oklch(63.1% 0.034 67.1)
-
Step 600
600
#826F5D
oklch(55.5% 0.036 65.4)
-
Step 700
700
#6E5D4C
oklch(49% 0.034 66.9)
-
Step 800
800
#5A4C3F
oklch(42.7% 0.028 64.9)
-
Step 900
900 (this color)
#3F352B
oklch(33.7% 0.022 67)
-
Step 950
950
#2B251F
oklch(26.9% 0.014 67.2)
#3F352B 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) | #38352A | 0.013 |
| Deuteranopia (no green cones) | #3B382B | 0.012 |
| Tritanopia (no blue cones) | #433332 | 0.017 |
| Achromatopsia (no color) | #373737 | 0.022 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F352B
#3F352B
oklch(33.7% 0.022 67)
- #2E3842
#2E3842
oklch(33.6% 0.022 248.5)
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 #3F352B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.036
- Charcoal Grey #3C4142 ΔE 0.044
- Pakistan Green #283618 ΔE 0.053
- Gunmetal #293241 ΔE 0.056
- Space Cadet #2B2D42 ΔE 0.066
- Dark Olive #373E02 ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.069
- Charcoal #264653 ΔE 0.076
Use #3F352B 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.