#901820
Closest named color: Brick Red (#8F1402). oklch(42.5% 0.154 24), rgb(144, 24, 32).
Aa
White text reads best on this color (8.98:1).
About this color
#901820 is a dark, vivid red. In OKLCH its lightness is 42%, its chroma 0.154 and its hue 24°. Its hue sits on the warm side of the wheel. The nearest named color is Brick Red (#8F1402), ΔE 0.022 away. White text reads best on it, at 8.98:1.
| Hue family | Reds |
| Lightness | dark (42%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Brick Red (#8F1402) |
| Black text | 2.33:1 |
| White text | 8.98:1 |
Values
| HEX | #901820 |
| RGB | rgb(144, 24, 32) |
| HSL | hsl(356, 71%, 33%) |
| OKLCH | oklch(42.5% 0.154 24) |
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 #901820 | 8.98:1 | AAA | Lc -93.6 | Preferred for body text |
| Black text on #901820 | 2.33:1 | Fails | Lc 14.9 | Not readable |
| #901820 text on white | 8.98:1 | AAA | Lc 89.0 | Fine for body text |
| #901820 text on black | 2.33:1 | Fails | Lc -13.2 | 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
#F6AAA4
oklch(80.9% 0.091 24.3)
-
Step 400
400
#ED7974
oklch(70.8% 0.144 23.9)
-
Step 500
500
#E34F4F
oklch(63% 0.184 24.1)
-
Step 600
600
#CF2933
oklch(55.7% 0.2 24.1)
-
Step 700
700
#B21726
oklch(49% 0.186 23.9)
-
Step 800
800 (this color)
#901820
oklch(42.5% 0.154 24)
-
Step 900
900
#741E20
oklch(37.7% 0.12 23.8)
-
Step 950
950
#451313
oklch(27% 0.077 23.8)
#901820 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) | #3F391F | 0.168 |
| Deuteranopia (no green cones) | #5C521B | 0.153 |
| Tritanopia (no blue cones) | #9F001D | 0.031 |
| Achromatopsia (no color) | #494949 | 0.155 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #901820
#901820
oklch(42.5% 0.154 24)
- #005A61
#005A61
oklch(42.6% 0.073 204)
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 #901820, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Brick Red #8F1402 ΔE 0.022
- Blood Red #980002 ΔE 0.025
- Carmine #9D0216 ΔE 0.027
- Deep Red #9A0200 ΔE 0.028
- Auburn #9B2226 ΔE 0.030
- Dark Red #8B0000 ΔE 0.030
- Red Brown #8B2E16 ΔE 0.038
- Brown Red #922B05 ΔE 0.040
Use #901820 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.