#90170B
Closest named color: Brick Red (#8F1402). oklch(42.2% 0.157 30.2), rgb(144, 23, 11).
Aa
White text reads best on this color (9.07:1).
About this color
#90170B is a dark, vivid red. In OKLCH its lightness is 42%, its chroma 0.157 and its hue 30°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.006 away. White text reads best on it, at 9.07:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | vivid (0.157) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.31:1 |
| White text | 9.07:1 |
Values
| HEX | #90170B |
| RGB | rgb(144, 23, 11) |
| HSL | hsl(5, 86%, 30%) |
| OKLCH | oklch(42.2% 0.157 30.2) |
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 #90170B | 9.07:1 | AAA | Lc -93.7 | Preferred for body text |
| Black text on #90170B | 2.31:1 | Fails | Lc 14.8 | Not readable |
| #90170B text on white | 9.07:1 | AAA | Lc 89.2 | Fine for body text |
| #90170B text on black | 2.31:1 | 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
#FEF3F1
oklch(97.2% 0.012 29.9)
-
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
#F6AB9D
oklch(81% 0.091 30.9)
-
Step 400
400
#EE7A68
oklch(70.8% 0.146 30.3)
-
Step 500
500
#E4503D
oklch(63% 0.187 30.3)
-
Step 600
600
#D02918
oklch(55.6% 0.204 30.3)
-
Step 700
700
#B31708
oklch(49% 0.189 30.2)
-
Step 800
800 (this color)
#90170B
oklch(42.2% 0.157 30.2)
-
Step 900
900
#751E14
oklch(37.7% 0.123 30.2)
-
Step 950
950
#45140D
oklch(27.1% 0.077 30.8)
#90170B 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) | #403807 | 0.169 |
| Deuteranopia (no green cones) | #5D5201 | 0.153 |
| Tritanopia (no blue cones) | #9F0016 | 0.034 |
| Achromatopsia (no color) | #484848 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90170B
#90170B
oklch(42.2% 0.157 30.2)
- #005864
#005864
oklch(42.2% 0.073 210.7)
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 #90170B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.006
- Blood Red #980002 ΔE 0.019
- Deep Red #9A0200 ΔE 0.022
- Dark Red #8B0000 ΔE 0.023
- Carmine #9D0216 ΔE 0.030
- Brown Red #922B05 ΔE 0.031
- Red Brown #8B2E16 ΔE 0.032
- Auburn #9B2226 ΔE 0.036
Use #90170B 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.