#900024
Closest named color: Red Wine (#8C0034). oklch(41.4% 0.166 19.1), rgb(144, 0, 36).
Aa
White text reads best on this color (9.49:1).
About this color
#900024 is a dark, vivid red. In OKLCH its lightness is 41%, its chroma 0.166 and its hue 19°. Its hue sits on the warm side of the wheel. The nearest named color is Red Wine (#8C0034), ΔE 0.025 away. White text reads best on it, at 9.49:1.
| Hue family | Reds |
| Lightness | dark (41%) |
| Chroma | vivid (0.166) |
| Temperature | warm |
| Nearest name | Red Wine (#8C0034) |
| Black text | 2.21:1 |
| White text | 9.49:1 |
Values
| HEX | #900024 |
| RGB | rgb(144, 0, 36) |
| HSL | hsl(345, 100%, 28%) |
| OKLCH | oklch(41.4% 0.166 19.1) |
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 #900024 | 9.49:1 | AAA | Lc -94.1 | Preferred for body text |
| Black text on #900024 | 2.21:1 | Fails | Lc 14.4 | Not readable |
| #900024 text on white | 9.49:1 | AAA | Lc 89.6 | Fine for body text |
| #900024 text on black | 2.21:1 | Fails | Lc -12.7 | 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
#FEF2F2
oklch(97.1% 0.013 17.4)
-
Step 100
100
#FCE3E2
oklch(93.6% 0.028 20.4)
-
Step 200
200
#FBCCCB
oklch(88.6% 0.053 19.6)
-
Step 300
300
#F9A7A8
oklch(80.8% 0.097 18.6)
-
Step 400
400
#F27479
oklch(70.8% 0.155 19.4)
-
Step 500
500
#E94657
oklch(63.2% 0.199 19.3)
-
Step 600
600
#D4133D
oklch(55.6% 0.216 19)
-
Step 700
700
#B60030
oklch(49.1% 0.197 19.1)
-
Step 800
800 (this color)
#900024
oklch(41.4% 0.166 19.1)
-
Step 900
900
#771724
oklch(37.6% 0.129 19.2)
-
Step 950
950
#461016
oklch(26.9% 0.082 18.4)
#900024 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) | #373324 | 0.186 |
| Deuteranopia (no green cones) | #584F1F | 0.168 |
| Tritanopia (no blue cones) | #9F0013 | 0.038 |
| Achromatopsia (no color) | #464646 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #900024
#900024
oklch(41.4% 0.166 19.1)
- #00575A
#00575A
oklch(41.5% 0.071 198.9)
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 #900024, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Wine #8C0034 ΔE 0.025
- Dark Red #8B0000 ΔE 0.032
- Blood Red #980002 ΔE 0.033
- Carmine #9D0216 ΔE 0.033
- Brick Red #8F1402 ΔE 0.036
- Deep Red #9A0200 ΔE 0.037
- Cranberry #9E003A ΔE 0.042
- Auburn #9B2226 ΔE 0.045
Use #900024 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.