#901C2A
Closest named color: Auburn (#9B2226). oklch(42.9% 0.15 20.4), rgb(144, 28, 42).
Aa
White text reads best on this color (8.80:1).
About this color
#901C2A is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.150 and its hue 20°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.028 away. White text reads best on it, at 8.80:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.38:1 |
| White text | 8.80:1 |
Values
| HEX | #901C2A |
| RGB | rgb(144, 28, 42) |
| HSL | hsl(353, 67%, 34%) |
| OKLCH | oklch(42.9% 0.15 20.4) |
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 #901C2A | 8.80:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #901C2A | 2.38:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #901C2A text on white | 8.80:1 | AAA | Lc 88.7 | Fine for body text |
| #901C2A text on black | 2.38:1 | Fails | Lc -13.5 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FBE4E3
oklch(93.7% 0.025 20.6)
-
Step 200
200
#F8CDCC
oklch(88.5% 0.049 19.7)
-
Step 300
300
#F4AAA9
oklch(80.8% 0.088 20)
-
Step 400
400
#EB797B
oklch(70.6% 0.141 20.2)
-
Step 500
500
#E15159
oklch(63.1% 0.179 20.7)
-
Step 600
600
#CC2C3F
oklch(55.5% 0.194 20.5)
-
Step 700
700
#B01B31
oklch(49% 0.181 20.5)
-
Step 800
800 (this color)
#901C2A
oklch(42.9% 0.15 20.4)
-
Step 900
900
#731F26
oklch(37.7% 0.117 20.3)
-
Step 950
950
#441416
oklch(27% 0.074 21.1)
#901C2A 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) | #3F3B2A | 0.166 |
| Deuteranopia (no green cones) | #5C5326 | 0.151 |
| Tritanopia (no blue cones) | #9F0022 | 0.032 |
| Achromatopsia (no color) | #4A4A4A | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #901C2A
#901C2A
oklch(42.9% 0.15 20.4)
- #005B60
#005B60
oklch(42.9% 0.073 201.3)
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 #901C2A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.028
- Carmine #9D0216 ΔE 0.032
- Brick Red #8F1402 ΔE 0.033
- Blood Red #980002 ΔE 0.034
- Red Wine #8C0034 ΔE 0.036
- Deep Red #9A0200 ΔE 0.036
- Dark Red #8B0000 ΔE 0.040
- Red Brown #8B2E16 ΔE 0.041
Use #901C2A 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.