#3F2D2B
Closest named color: Onyx (#343A40). oklch(31.7% 0.027 25.9), rgb(63, 45, 43).
Aa
White text reads best on this color (12.95:1).
About this color
#3F2D2B is a dark close to neutral grey. In OKLCH its lightness is 32%, its chroma 0.027. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.047 away. White text reads best on it, at 12.95:1.
| Hue family | Neutrals |
| Lightness | dark (32%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.62:1 |
| White text | 12.95:1 |
Values
| HEX | #3F2D2B |
| RGB | rgb(63, 45, 43) |
| HSL | hsl(6, 19%, 21%) |
| OKLCH | oklch(31.7% 0.027 25.9) |
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 #3F2D2B | 12.95:1 | AAA | Lc -102.4 | Preferred for body text |
| Black text on #3F2D2B | 1.62:1 | Fails | Lc 0.0 | Not readable |
| #3F2D2B text on white | 12.95:1 | AAA | Lc 99.1 | Preferred for body text |
| #3F2D2B text on black | 1.62:1 | 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 950.
-
Step 50
50
#F8F4F4
oklch(97% 0.004 17.2)
-
Step 100
100
#F0E8E7
oklch(93.7% 0.009 26)
-
Step 200
200
#E5D5D3
oklch(88.5% 0.018 26.1)
-
Step 300
300
#D5B9B6
oklch(80.9% 0.033 25.1)
-
Step 400
400
#BF9590
oklch(70.8% 0.051 26.3)
-
Step 500
500
#AE7A75
oklch(63.1% 0.066 25.2)
-
Step 600
600
#99635D
oklch(55.6% 0.071 26.5)
-
Step 700
700
#82524D
oklch(49.1% 0.065 26.2)
-
Step 800
800
#6A433F
oklch(42.7% 0.055 26)
-
Step 900
900
#563936
oklch(37.7% 0.042 25.8)
-
Step 950
950 (this color)
#3F2D2B
oklch(31.7% 0.027 25.9)
#3F2D2B 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) | #312F2B | 0.027 |
| Deuteranopia (no green cones) | #35332B | 0.026 |
| Tritanopia (no blue cones) | #432B2D | 0.011 |
| Achromatopsia (no color) | #313131 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2D2B
#3F2D2B
oklch(31.7% 0.027 25.9)
- #213639
#213639
oklch(31.7% 0.027 207.2)
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 #3F2D2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.047
- Gunmetal #293241 ΔE 0.050
- Space Cadet #2B2D42 ΔE 0.054
- Charcoal Grey #3C4142 ΔE 0.063
- Pakistan Green #283618 ΔE 0.065
- Jet #212529 ΔE 0.065
- Chocolate Brown #411900 ΔE 0.068
- Dark Brown #341C02 ΔE 0.074
Use #3F2D2B 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.