#3F2D31
Closest named color: Onyx (#343A40). oklch(31.9% 0.027 4), rgb(63, 45, 49).
Aa
White text reads best on this color (12.87:1).
About this color
#3F2D31 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 0.044 away. White text reads best on it, at 12.87:1.
| Hue family | Neutrals |
| Lightness | dark (32%) |
| Chroma | close to neutral grey (0.027) |
| Temperature | neutral |
| Nearest name | Onyx (#343A40) |
| Black text | 1.63:1 |
| White text | 12.87:1 |
Values
| HEX | #3F2D31 |
| RGB | rgb(63, 45, 49) |
| HSL | hsl(347, 17%, 21%) |
| OKLCH | oklch(31.9% 0.027 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 #3F2D31 | 12.87:1 | AAA | Lc -102.3 | Preferred for body text |
| Black text on #3F2D31 | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #3F2D31 text on white | 12.87:1 | AAA | Lc 99.0 | Preferred for body text |
| #3F2D31 text on black | 1.63:1 | 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
#F8F4F5
oklch(97.1% 0.004 360)
-
Step 100
100
#F0E7E9
oklch(93.6% 0.01 2)
-
Step 200
200
#E4D4D8
oklch(88.4% 0.018 0.4)
-
Step 300
300
#D4B8BE
oklch(80.8% 0.033 3.3)
-
Step 400
400
#BD949D
oklch(70.7% 0.051 3.8)
-
Step 500
500
#AC7985
oklch(63.1% 0.066 3.6)
-
Step 600
600
#97616E
oklch(55.5% 0.072 4)
-
Step 700
700
#81505C
oklch(49% 0.068 4)
-
Step 800
800
#69424B
oklch(42.7% 0.055 4.6)
-
Step 900
900
#55383F
oklch(37.7% 0.043 3.5)
-
Step 950
950 (this color)
#3F2D31
oklch(31.9% 0.027 4)
#3F2D31 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) | #2F3031 | 0.030 |
| Deuteranopia (no green cones) | #343331 | 0.027 |
| Tritanopia (no blue cones) | #422C2E | 0.007 |
| Achromatopsia (no color) | #323232 | 0.027 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2D31
#3F2D31
oklch(31.9% 0.027 4)
- #233734
#233734
oklch(31.9% 0.026 184.3)
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 #3F2D31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.044
- Gunmetal #293241 ΔE 0.045
- Space Cadet #2B2D42 ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.061
- Jet #212529 ΔE 0.066
- Dark Blue Grey #1F3B4D ΔE 0.069
- Pakistan Green #283618 ΔE 0.073
- Oxford Blue #1B263B ΔE 0.074
Use #3F2D31 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.