#3F2A31
Closest named color: Space Cadet (#2B2D42). oklch(31.3% 0.033 357.5), rgb(63, 42, 49).
Aa
White text reads best on this color (13.23:1).
About this color
#3F2A31 is a dark, muted red. In OKLCH its lightness is 31%, its chroma 0.033 and its hue 357°. Its hue sits on the warm side of the wheel. The nearest named color is Space Cadet (#2B2D42), ΔE 0.045 away. White text reads best on it, at 13.23:1.
| Hue family | Reds |
| Lightness | dark (31%) |
| Chroma | muted (0.033) |
| Temperature | warm |
| Nearest name | Space Cadet (#2B2D42) |
| Black text | 1.58:1 |
| White text | 13.23:1 |
Values
| HEX | #3F2A31 |
| RGB | rgb(63, 42, 49) |
| HSL | hsl(340, 20%, 21%) |
| OKLCH | oklch(31.3% 0.033 357.5) |
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 #3F2A31 | 13.23:1 | AAA | Lc -102.7 | Preferred for body text |
| Black text on #3F2A31 | 1.58:1 | Fails | Lc 0.0 | Not readable |
| #3F2A31 text on white | 13.23:1 | AAA | Lc 99.5 | Preferred for body text |
| #3F2A31 text on black | 1.58:1 | 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
#F9F4F5
oklch(97.1% 0.006 3.3)
-
Step 100
100
#F1E7EA
oklch(93.7% 0.012 357)
-
Step 200
200
#E6D3D9
oklch(88.4% 0.022 356.4)
-
Step 300
300
#D7B7C1
oklch(81% 0.039 357.2)
-
Step 400
400
#C291A1
oklch(70.8% 0.063 357.4)
-
Step 500
500
#B1758A
oklch(63.1% 0.08 357)
-
Step 600
600
#9C5D73
oklch(55.6% 0.087 357.9)
-
Step 700
700
#854C61
oklch(49% 0.081 357)
-
Step 800
800
#6C3F4F
oklch(42.7% 0.066 357.5)
-
Step 900
900
#583642
oklch(37.8% 0.052 357.1)
-
Step 950
950 (this color)
#3F2A31
oklch(31.3% 0.033 357.5)
#3F2A31 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) | #2C2E31 | 0.037 |
| Deuteranopia (no green cones) | #313131 | 0.033 |
| Tritanopia (no blue cones) | #42292C | 0.010 |
| Achromatopsia (no color) | #303030 | 0.033 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #3F2A31
#3F2A31
oklch(31.3% 0.033 357.5)
- #1D3731
#1D3731
oklch(31.4% 0.034 177.5)
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 #3F2A31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Space Cadet #2B2D42 ΔE 0.045
- Gunmetal #293241 ΔE 0.047
- Onyx #343A40 ΔE 0.051
- Jet #212529 ΔE 0.063
- Charcoal Grey #3C4142 ΔE 0.070
- Oxford Blue #1B263B ΔE 0.071
- Chocolate Brown #411900 ΔE 0.072
- Dark #1B2431 ΔE 0.072
Use #3F2A31 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.