#90151B
Closest named color: Brick Red (#8F1402). oklch(42.2% 0.157 25.3), rgb(144, 21, 27).
Aa
White text reads best on this color (9.09:1).
About this color
#90151B is a dark, vivid red. In OKLCH its lightness is 42%, its chroma 0.157 and its hue 25°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.017 away. White text reads best on it, at 9.09:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | vivid (0.157) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.30:1 |
| White text | 9.09:1 |
Values
| HEX | #90151B |
| RGB | rgb(144, 21, 27) |
| HSL | hsl(357, 75%, 32%) |
| OKLCH | oklch(42.2% 0.157 25.3) |
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 #90151B | 9.09:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #90151B | 2.30:1 | Fails | Lc 14.8 | Not readable |
| #90151B text on white | 9.09:1 | AAA | Lc 89.2 | Fine for body text |
| #90151B text on black | 2.30:1 | Fails | Lc -13.0 | 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 800.
-
Step 50
50
#FEF2F1
oklch(97% 0.013 23.2)
-
Step 100
100
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F9CDC8
oklch(88.5% 0.05 25.7)
-
Step 300
300
#F6AAA2
oklch(80.9% 0.091 25.9)
-
Step 400
400
#EE7871
oklch(70.7% 0.147 25)
-
Step 500
500
#E44E4B
oklch(63% 0.187 25.2)
-
Step 600
600
#D0262D
oklch(55.6% 0.204 25.4)
-
Step 700
700
#B31420
oklch(49% 0.189 25.3)
-
Step 800
800 (this color)
#90151B
oklch(42.2% 0.157 25.3)
-
Step 900
900
#751D1D
oklch(37.7% 0.122 25.2)
-
Step 950
950
#451312
oklch(27% 0.077 24.9)
#90151B 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) | #3E381A | 0.171 |
| Deuteranopia (no green cones) | #5C5215 | 0.156 |
| Tritanopia (no blue cones) | #9F0019 | 0.031 |
| Achromatopsia (no color) | #484848 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90151B
#90151B
oklch(42.2% 0.157 25.3)
- #005961
#005961
oklch(42.4% 0.072 205.4)
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 #90151B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.017
- Blood Red #980002 ΔE 0.022
- Deep Red #9A0200 ΔE 0.025
- Dark Red #8B0000 ΔE 0.026
- Carmine #9D0216 ΔE 0.027
- Auburn #9B2226 ΔE 0.032
- Red Brown #8B2E16 ΔE 0.038
- Brown Red #922B05 ΔE 0.040
Use #90151B 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.