#931B31
Closest named color: Auburn (#9B2226). oklch(43.6% 0.154 17.1), rgb(147, 27, 49).
Aa
White text reads best on this color (8.60:1).
About this color
#931B31 is a dark, vivid red. In OKLCH its lightness is 44%, its chroma 0.154 and its hue 17°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.028 away. White text reads best on it, at 8.60:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.44:1 |
| White text | 8.60:1 |
Values
| HEX | #931B31 |
| RGB | rgb(147, 27, 49) |
| HSL | hsl(349, 69%, 34%) |
| OKLCH | oklch(43.6% 0.154 17.1) |
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 #931B31 | 8.60:1 | AAA | Lc -92.7 | Preferred for body text |
| Black text on #931B31 | 2.44:1 | Fails | Lc 15.9 | Dividers and decoration only |
| #931B31 text on white | 8.60:1 | AAA | Lc 88.1 | Fine for body text |
| #931B31 text on black | 2.44:1 | Fails | Lc -14.1 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FBE3E4
oklch(93.6% 0.026 14.7)
-
Step 200
200
#F9CDCD
oklch(88.6% 0.05 18.1)
-
Step 300
300
#F5A9AC
oklch(80.9% 0.09 16.6)
-
Step 400
400
#EC7880
oklch(70.7% 0.143 17.1)
-
Step 500
500
#E24E60
oklch(63.1% 0.183 17.1)
-
Step 600
600
#CE2747
oklch(55.7% 0.2 17.1)
-
Step 700
700
#B11538
oklch(49% 0.185 17.1)
-
Step 800
800 (this color)
#931B31
oklch(43.6% 0.154 17.1)
-
Step 900
900
#741D2A
oklch(37.7% 0.12 16.8)
-
Step 950
950
#441319
oklch(27% 0.075 16.6)
#931B31 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) | #3F3C31 | 0.171 |
| Deuteranopia (no green cones) | #5D552E | 0.156 |
| Tritanopia (no blue cones) | #A20025 | 0.033 |
| Achromatopsia (no color) | #4C4C4C | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #931B31
#931B31
oklch(43.6% 0.154 17.1)
- #005E5F
#005E5F
oklch(43.7% 0.074 196)
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 #931B31, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.028
- Cranberry #9E003A ΔE 0.031
- Carmine #9D0216 ΔE 0.033
- Red Wine #8C0034 ΔE 0.033
- Blood Red #980002 ΔE 0.041
- Deep Red #9A0200 ΔE 0.042
- Brick Red #8F1402 ΔE 0.043
- Purple Red #990147 ΔE 0.044
Use #931B31 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.