#3F2B2A
Closest named color: Onyx (#343A40). oklch(31.3% 0.03 22.2), rgb(63, 43, 42).
Aa
White text reads best on this color (13.20:1).
About this color
#3F2B2A is a dark, muted red. In OKLCH its lightness is 31%, its chroma 0.030 and its hue 22°. Its hue sits on the warm side of the wheel. The nearest named color is Onyx (#343A40), ΔE 0.052 away. White text reads best on it, at 13.20:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | muted (0.030) |
| Temperature | warm |
| Nearest name | Onyx (#343A40) |
| Black text | 1.59:1 |
| White text | 13.20:1 |
Values
| HEX | #3F2B2A |
| RGB | rgb(63, 43, 42) |
| HSL | hsl(3, 20%, 21%) |
| OKLCH | oklch(31.3% 0.03 22.2) |
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 #3F2B2A | 13.20:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #3F2B2A | 1.59:1 | Fails | Lc 0.0 | Not readable |
| #3F2B2A text on white | 13.20:1 | AAA | Lc 99.5 | Preferred for body text |
| #3F2B2A text on black | 1.59:1 | 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
#F9F4F4
oklch(97.1% 0.005 17.2)
-
Step 100
100
#F1E7E7
oklch(93.6% 0.011 17.4)
-
Step 200
200
#E6D4D3
oklch(88.4% 0.02 21.4)
-
Step 300
300
#D7B8B6
oklch(80.9% 0.036 22.3)
-
Step 400
400
#C29391
oklch(70.7% 0.057 21.4)
-
Step 500
500
#B17875
oklch(63% 0.072 22.7)
-
Step 600
600
#9C605E
oklch(55.5% 0.079 22)
-
Step 700
700
#864F4E
oklch(49.1% 0.074 21.2)
-
Step 800
800
#6D4140
oklch(42.7% 0.062 21.4)
-
Step 900
900
#583736
oklch(37.6% 0.048 21.5)
-
Step 950
950 (this color)
#3F2B2A
oklch(31.3% 0.03 22.2)
#3F2B2A 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) | #2F2E2A | 0.031 |
| Deuteranopia (no green cones) | #34312A | 0.027 |
| Tritanopia (no blue cones) | #43292B | 0.010 |
| Achromatopsia (no color) | #303030 | 0.030 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2B2A
#3F2B2A
oklch(31.3% 0.03 22.2)
- #1E3637
#1E3637
oklch(31.4% 0.03 199.1)
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 #3F2B2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Onyx #343A40 ΔE 0.052
- Gunmetal #293241 ΔE 0.052
- Space Cadet #2B2D42 ΔE 0.054
- Jet #212529 ΔE 0.063
- Chocolate Brown #411900 ΔE 0.064
- Pakistan Green #283618 ΔE 0.068
- Charcoal Grey #3C4142 ΔE 0.069
- Dark Brown #341C02 ΔE 0.070
Use #3F2B2A 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.