#900D44
Closest named color: Mulberry (#920A4E). oklch(42.6% 0.163 4.2), rgb(144, 13, 68).
Aa
White text reads best on this color (9.02:1).
About this color
#900D44 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.163 and its hue 4°. Its hue sits on the warm side of the wheel. The nearest named color is Mulberry (#920A4E), ΔE 0.017 away. White text reads best on it, at 9.02:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.163) |
| Temperature | warm |
| Nearest name | Mulberry (#920A4E) |
| Black text | 2.32:1 |
| White text | 9.02:1 |
Values
| HEX | #900D44 |
| RGB | rgb(144, 13, 68) |
| HSL | hsl(335, 83%, 31%) |
| OKLCH | oklch(42.6% 0.163 4.2) |
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 #900D44 | 9.02:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #900D44 | 2.32:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #900D44 text on white | 9.02:1 | AAA | Lc 88.9 | Fine for body text |
| #900D44 text on black | 2.32:1 | Fails | Lc -13.3 | 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
#FEF2F4
oklch(97.1% 0.013 5.8)
-
Step 100
100
#FBE3E7
oklch(93.6% 0.027 6.2)
-
Step 200
200
#F9CBD5
oklch(88.5% 0.053 3.6)
-
Step 300
300
#F6A7B9
oklch(81% 0.096 4.5)
-
Step 400
400
#ED7395
oklch(70.7% 0.154 4.2)
-
Step 500
500
#E3477B
oklch(63.1% 0.195 4.4)
-
Step 600
600
#CE1964
oklch(55.6% 0.212 4.4)
-
Step 700
700
#B20053
oklch(49.1% 0.198 4.4)
-
Step 800
800 (this color)
#900D44
oklch(42.6% 0.163 4.2)
-
Step 900
900
#741839
oklch(37.7% 0.128 4.4)
-
Step 950
950
#441122
oklch(27% 0.08 3.7)
#900D44 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) | #343945 | 0.186 |
| Deuteranopia (no green cones) | #565241 | 0.167 |
| Tritanopia (no blue cones) | #9D0028 | 0.048 |
| Achromatopsia (no color) | #494949 | 0.165 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #900D44
#900D44
oklch(42.6% 0.163 4.2)
- #005C54
#005C54
oklch(42.7% 0.075 184.7)
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 #900D44, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mulberry #920A4E ΔE 0.017
- Purple Red #990147 ΔE 0.019
- Berry #990F4B ΔE 0.022
- Red Wine #8C0034 ΔE 0.025
- Cranberry #9E003A ΔE 0.033
- Red Purple #820747 ΔE 0.034
- Wine #80013F ΔE 0.039
- Dark Fuchsia #9D0759 ΔE 0.042
Use #900D44 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.