#90171D
Closest named color: Brick Red (#8F1402). oklch(42.4% 0.155 25), rgb(144, 23, 29).
Aa
White text reads best on this color (9.02:1).
About this color
#90171D is a dark, vivid red. In OKLCH its lightness is 42%, 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 0.019 away. White text reads best on it, at 9.02:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | vivid (0.155) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #90171D |
| RGB | rgb(144, 23, 29) |
| HSL | hsl(357, 72%, 33%) |
| OKLCH | oklch(42.4% 0.155 25) |
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 #90171D | 9.02:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #90171D | 2.32:1 | Fails | Lc 14.9 | Not readable |
| #90171D text on white | 9.02:1 | AAA | Lc 89.1 | Fine for body text |
| #90171D text on black | 2.32:1 | Fails | Lc -13.1 | 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
#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
#E44F4C
oklch(63.1% 0.186 25.2)
-
Step 600
600
#CF282F
oklch(55.6% 0.201 25.1)
-
Step 700
700
#B31622
oklch(49.1% 0.188 25)
-
Step 800
800 (this color)
#90171D
oklch(42.4% 0.155 25)
-
Step 900
900
#751E1E
oklch(37.8% 0.121 25.1)
-
Step 950
950
#451312
oklch(27% 0.077 24.9)
#90171D 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) | #3F381C | 0.168 |
| Deuteranopia (no green cones) | #5C5218 | 0.154 |
| Tritanopia (no blue cones) | #9F001B | 0.031 |
| Achromatopsia (no color) | #494949 | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90171D
#90171D
oklch(42.4% 0.155 25)
- #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 #90171D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.019
- Blood Red #980002 ΔE 0.023
- Deep Red #9A0200 ΔE 0.026
- Carmine #9D0216 ΔE 0.027
- Dark Red #8B0000 ΔE 0.028
- Auburn #9B2226 ΔE 0.031
- Red Brown #8B2E16 ΔE 0.037
- Brown Red #922B05 ΔE 0.039
Use #90171D 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.