#90010D
Closest named color: Dark Red (#8B0000). oklch(41.1% 0.167 26.8), rgb(144, 1, 13).
Aa
White text reads best on this color (9.56:1).
About this color
#90010D is a dark, vivid red. In OKLCH its lightness is 41%, its chroma 0.167 and its hue 27°. Its hue sits on the warm side of the wheel. The nearest named color is Dark Red (#8B0000), ΔE 0.014 away. White text reads best on it, at 9.56:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | vivid (0.167) |
| Temperature | warm |
| Nearest name | Dark Red (#8B0000) |
| Black text | 2.19:1 |
| White text | 9.56:1 |
Values
| HEX | #90010D |
| RGB | rgb(144, 1, 13) |
| HSL | hsl(355, 99%, 28%) |
| OKLCH | oklch(41.1% 0.167 26.8) |
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 #90010D | 9.56:1 | AAA | Lc -94.2 | Preferred for body text |
| Black text on #90010D | 2.19:1 | Fails | Lc 14.3 | Not readable |
| #90010D text on white | 9.56:1 | AAA | Lc 89.7 | Fine for body text |
| #90010D text on black | 2.19:1 | Fails | Lc -12.6 | 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
#FCE3E0
oklch(93.5% 0.028 25.9)
-
Step 200
200
#FBCCC6
oklch(88.4% 0.054 26.7)
-
Step 300
300
#F9A89F
oklch(80.8% 0.097 26.4)
-
Step 400
400
#F2756A
oklch(70.7% 0.156 26.9)
-
Step 500
500
#E94841
oklch(63% 0.199 27)
-
Step 600
600
#D51720
oklch(55.6% 0.217 26.8)
-
Step 700
700
#B70013
oklch(49% 0.2 26.8)
-
Step 800
800 (this color)
#90010D
oklch(41.1% 0.167 26.8)
-
Step 900
900
#781917
oklch(37.8% 0.13 27)
-
Step 950
950
#47110F
oklch(27.1% 0.083 26.4)
#90010D 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) | #3A330A | 0.184 |
| Deuteranopia (no green cones) | #5A4F02 | 0.165 |
| Tritanopia (no blue cones) | #A00009 | 0.035 |
| Achromatopsia (no color) | #454545 | 0.168 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #90010D
#90010D
oklch(41.1% 0.167 26.8)
- #00555E
#00555E
oklch(41.1% 0.07 207.2)
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 #90010D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Red #8B0000 ΔE 0.014
- Brick Red #8F1402 ΔE 0.017
- Blood Red #980002 ΔE 0.018
- Deep Red #9A0200 ΔE 0.024
- Carmine #9D0216 ΔE 0.030
- Maroon #800000 ΔE 0.038
- Auburn #9B2226 ΔE 0.045
- Red Wine #8C0034 ΔE 0.046
Use #90010D 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.