#931B0B
Closest named color: Brick Red (#8F1402). oklch(43.1% 0.157 31), rgb(147, 27, 11).
Aa
White text reads best on this color (8.74:1).
About this color
#931B0B is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.157 and its hue 31°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.013 away. White text reads best on it, at 8.74:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.157) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.40:1 |
| White text | 8.74:1 |
Values
| HEX | #931B0B |
| RGB | rgb(147, 27, 11) |
| HSL | hsl(7, 86%, 31%) |
| OKLCH | oklch(43.1% 0.157 31) |
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 #931B0B | 8.74:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #931B0B | 2.40:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #931B0B text on white | 8.74:1 | AAA | Lc 88.4 | Fine for body text |
| #931B0B text on black | 2.40:1 | Fails | Lc -13.8 | 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 800.
-
Step 50
50
#FEF3F0
oklch(97.2% 0.013 35.7)
-
Step 100
100
#FBE4DF
oklch(93.6% 0.026 32.2)
-
Step 200
200
#F9CDC5
oklch(88.4% 0.051 30.1)
-
Step 300
300
#F6AB9C
oklch(80.9% 0.092 31.7)
-
Step 400
400
#EE7A66
oklch(70.8% 0.147 31.2)
-
Step 500
500
#E4503B
oklch(63% 0.187 30.9)
-
Step 600
600
#D02913
oklch(55.6% 0.204 31)
-
Step 700
700
#B31801
oklch(49% 0.189 31.2)
-
Step 800
800 (this color)
#931B0B
oklch(43.1% 0.157 31)
-
Step 900
900
#751E12
oklch(37.7% 0.123 31.1)
-
Step 950
950
#45140C
oklch(27% 0.077 31.7)
#931B0B 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) | #423A06 | 0.170 |
| Deuteranopia (no green cones) | #605401 | 0.151 |
| Tritanopia (no blue cones) | #A30019 | 0.037 |
| Achromatopsia (no color) | #4B4B4B | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #931B0B
#931B0B
oklch(43.1% 0.157 31)
- #005B67
#005B67
oklch(43.2% 0.075 210.2)
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 #931B0B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.013
- Blood Red #980002 ΔE 0.019
- Deep Red #9A0200 ΔE 0.019
- Brown Red #922B05 ΔE 0.024
- Carmine #9D0216 ΔE 0.027
- Red Brown #8B2E16 ΔE 0.028
- Auburn #9B2226 ΔE 0.029
- Burnt Red #9F2305 ΔE 0.031
Use #931B0B 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.