#901F2B
Closest named color: Auburn (#9B2226). oklch(43.2% 0.148 20.7), rgb(144, 31, 43).
Aa
White text reads best on this color (8.68:1).
About this color
#901F2B is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.148 and its hue 21°. Its hue sits on the warm side of the wheel. The nearest named color is Auburn (#9B2226), ΔE 0.026 away. White text reads best on it, at 8.68:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.148) |
| Temperature | warm |
| Nearest name | Auburn (#9B2226) |
| Black text | 2.41:1 |
| White text | 8.68:1 |
Values
| HEX | #901F2B |
| RGB | rgb(144, 31, 43) |
| HSL | hsl(354, 65%, 34%) |
| OKLCH | oklch(43.2% 0.148 20.7) |
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 #901F2B | 8.68:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #901F2B | 2.41:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #901F2B text on white | 8.68:1 | AAA | Lc 88.5 | Fine for body text |
| #901F2B text on black | 2.41:1 | Fails | Lc -13.7 | 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
#FDF3F2
oklch(97.2% 0.011 24.3)
-
Step 100
100
#FAE4E3
oklch(93.6% 0.024 20.7)
-
Step 200
200
#F8CDCC
oklch(88.5% 0.049 19.7)
-
Step 300
300
#F4ABA9
oklch(81% 0.086 20.9)
-
Step 400
400
#EA7A7B
oklch(70.7% 0.139 20.6)
-
Step 500
500
#E0525A
oklch(63.1% 0.177 20.5)
-
Step 600
600
#CB2E40
oklch(55.5% 0.192 20.5)
-
Step 700
700
#AF1E32
oklch(49.1% 0.178 20.5)
-
Step 800
800 (this color)
#901F2B
oklch(43.2% 0.148 20.7)
-
Step 900
900
#722026
oklch(37.6% 0.115 20.6)
-
Step 950
950
#431417
oklch(26.9% 0.073 19.7)
#901F2B 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) | #403C2B | 0.163 |
| Deuteranopia (no green cones) | #5D5427 | 0.148 |
| Tritanopia (no blue cones) | #9F0025 | 0.033 |
| Achromatopsia (no color) | #4B4B4B | 0.149 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #901F2B
#901F2B
oklch(43.2% 0.148 20.7)
- #005C61
#005C61
oklch(43.2% 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 #901F2B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Auburn #9B2226 ΔE 0.026
- Carmine #9D0216 ΔE 0.033
- Brick Red #8F1402 ΔE 0.034
- Blood Red #980002 ΔE 0.036
- Deep Red #9A0200 ΔE 0.038
- Red Wine #8C0034 ΔE 0.039
- Red Brown #8B2E16 ΔE 0.039
- Cranberry #9E003A ΔE 0.043
Use #901F2B 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.