#901C37
Closest named color: Red Wine (#8C0034). oklch(43.2% 0.15 13.6), rgb(144, 28, 55).
Aa
White text reads best on this color (8.72:1).
About this color
#901C37 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.150 and its hue 14°. Its hue sits on the warm side of the wheel. The nearest named color is Red Wine (#8C0034), ΔE 0.028 away. White text reads best on it, at 8.72:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.150) |
| Temperature | warm |
| Nearest name | Red Wine (#8C0034) |
| Black text | 2.40:1 |
| White text | 8.72:1 |
Values
| HEX | #901C37 |
| RGB | rgb(144, 28, 55) |
| HSL | hsl(346, 67%, 34%) |
| OKLCH | oklch(43.2% 0.15 13.6) |
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 #901C37 | 8.72:1 | AAA | Lc -93.1 | Preferred for body text |
| Black text on #901C37 | 2.40:1 | Fails | Lc 15.5 | Dividers and decoration only |
| #901C37 text on white | 8.72:1 | AAA | Lc 88.5 | Fine for body text |
| #901C37 text on black | 2.40:1 | 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
#FDF2F3
oklch(97% 0.012 11)
-
Step 100
100
#FAE3E5
oklch(93.5% 0.025 11.6)
-
Step 200
200
#F8CDD0
oklch(88.6% 0.049 13.4)
-
Step 300
300
#F4A9B0
oklch(80.9% 0.089 13.1)
-
Step 400
400
#EA7886
oklch(70.6% 0.141 13.6)
-
Step 500
500
#E04F69
oklch(63.1% 0.18 13.3)
-
Step 600
600
#CB2A50
oklch(55.5% 0.195 13.7)
-
Step 700
700
#AF1941
oklch(49% 0.182 13.5)
-
Step 800
800 (this color)
#901C37
oklch(43.2% 0.15 13.6)
-
Step 900
900
#721E2F
oklch(37.6% 0.117 13.1)
-
Step 950
950
#43131B
oklch(26.8% 0.074 13.7)
#901C37 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) | #3D3C37 | 0.168 |
| Deuteranopia (no green cones) | #5B5434 | 0.153 |
| Tritanopia (no blue cones) | #9E0028 | 0.033 |
| Achromatopsia (no color) | #4B4B4B | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #901C37
#901C37
oklch(43.2% 0.15 13.6)
- #005D5C
#005D5C
oklch(43.3% 0.074 193.5)
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 #901C37, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Red Wine #8C0034 ΔE 0.028
- Cranberry #9E003A ΔE 0.032
- Auburn #9B2226 ΔE 0.037
- Purple Red #990147 ΔE 0.038
- Berry #990F4B ΔE 0.039
- Carmine #9D0216 ΔE 0.043
- Mulberry #920A4E ΔE 0.045
- Blood Red #980002 ΔE 0.050
Use #901C37 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.