#91181E
Closest named color: Brick Red (#8F1402). oklch(42.6% 0.155 24.9), rgb(145, 24, 30).
Aa
White text reads best on this color (8.92:1).
About this color
#91181E is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.155 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.020 away. White text reads best on it, at 8.92:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.155) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.35:1 |
| White text | 8.92:1 |
Values
| HEX | #91181E |
| RGB | rgb(145, 24, 30) |
| HSL | hsl(357, 72%, 33%) |
| OKLCH | oklch(42.6% 0.155 24.9) |
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 #91181E | 8.92:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #91181E | 2.35:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #91181E text on white | 8.92:1 | AAA | Lc 88.9 | Fine for body text |
| #91181E text on black | 2.35:1 | Fails | Lc -13.3 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F9CDC9
oklch(88.5% 0.05 24.2)
-
Step 300
300
#F6AAA3
oklch(80.9% 0.091 25.1)
-
Step 400
400
#ED7972
oklch(70.7% 0.144 24.9)
-
Step 500
500
#E44F4D
oklch(63.1% 0.185 24.8)
-
Step 600
600
#CF2830
oklch(55.6% 0.201 24.8)
-
Step 700
700
#B31622
oklch(49.1% 0.188 25)
-
Step 800
800 (this color)
#91181E
oklch(42.6% 0.155 24.9)
-
Step 900
900
#751E1E
oklch(37.8% 0.121 25.1)
-
Step 950
950
#451312
oklch(27% 0.077 24.9)
#91181E 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) | #3F391D | 0.170 |
| Deuteranopia (no green cones) | #5D5319 | 0.154 |
| Tritanopia (no blue cones) | #A0001C | 0.031 |
| Achromatopsia (no color) | #4A4A4A | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #91181E
#91181E
oklch(42.6% 0.155 24.9)
- #005A62
#005A62
oklch(42.7% 0.073 205.3)
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 #91181E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.020
- Blood Red #980002 ΔE 0.023
- Deep Red #9A0200 ΔE 0.025
- Carmine #9D0216 ΔE 0.025
- Auburn #9B2226 ΔE 0.028
- Dark Red #8B0000 ΔE 0.031
- Red Brown #8B2E16 ΔE 0.036
- Brown Red #922B05 ΔE 0.038
Use #91181E 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.