#3F2F2B
Closest named color: Onyx (#343A40). oklch(32.2% 0.025 34.4), rgb(63, 47, 43).
Aa
White text reads best on this color (12.70:1).
About this color
#3F2F2B is a dark close to neutral grey. In OKLCH its lightness is 32%, its chroma 0.025. It has too little chroma to lean warm or cool. The nearest named color is Onyx (#343A40), ΔE 0.043 away. White text reads best on it, at 12.70:1.
| Hue family | Neutrals |
| Lightness | dark (32%) |
| Chroma | close to neutral grey (0.025) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.65:1 |
| White text | 12.70:1 |
Values
| HEX | #3F2F2B |
| RGB | rgb(63, 47, 43) |
| HSL | hsl(12, 19%, 21%) |
| OKLCH | oklch(32.2% 0.025 34.4) |
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 #3F2F2B | 12.70:1 | AAA | Lc -102.1 | Preferred for body text |
| Black text on #3F2F2B | 1.65:1 | Fails | Lc 0.0 | Not readable |
| #3F2F2B text on white | 12.70:1 | AAA | Lc 98.7 | Preferred for body text |
| #3F2F2B text on black | 1.65:1 | 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
#EFE8E6
oklch(93.6% 0.008 36.6)
-
Step 200
200
#E4D6D2
oklch(88.6% 0.016 36.5)
-
Step 300
300
#D3BAB4
oklch(80.9% 0.03 33.7)
-
Step 400
400
#BC978D
oklch(70.8% 0.047 35.6)
-
Step 500
500
#AA7D71
oklch(63.1% 0.059 35.5)
-
Step 600
600
#95665A
oklch(55.6% 0.064 34.9)
-
Step 700
700
#7F544A
oklch(49% 0.06 33.7)
-
Step 800
800
#67453D
oklch(42.6% 0.049 33.8)
-
Step 900
900
#543A34
oklch(37.6% 0.039 33.4)
-
Step 950
950 (this color)
#3F2F2B
oklch(32.2% 0.025 34.4)
#3F2F2B 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) | #33312B | 0.023 |
| Deuteranopia (no green cones) | #36342B | 0.022 |
| Tritanopia (no blue cones) | #432D2E | 0.012 |
| Achromatopsia (no color) | #333333 | 0.025 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2F2B
#3F2F2B
oklch(32.2% 0.025 34.4)
- #25373B
#25373B
oklch(32.3% 0.024 213)
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 #3F2F2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.043
- Gunmetal #293241 ΔE 0.051
- Space Cadet #2B2D42 ΔE 0.056
- Charcoal Grey #3C4142 ΔE 0.058
- Pakistan Green #283618 ΔE 0.061
- Jet #212529 ΔE 0.068
- Chocolate Brown #411900 ΔE 0.071
- Dark Blue Grey #1F3B4D ΔE 0.072
Use #3F2F2B 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.