#900D59
Closest named color: Mulberry (#920A4E). oklch(43.4% 0.171 352.9), rgb(144, 13, 89).
Aa
White text reads best on this color (8.79:1).
About this color
#900D59 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.171 and its hue 353°. Its hue sits on the warm side of the wheel. The nearest named color is Mulberry (#920A4E), ΔE 0.019 away. White text reads best on it, at 8.79:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.171) |
| Temperature | warm |
| Nearest name | Mulberry (#920A4E) |
| Black text | 2.38:1 |
| White text | 8.79:1 |
Values
| HEX | #900D59 |
| RGB | rgb(144, 13, 89) |
| HSL | hsl(325, 83%, 31%) |
| OKLCH | oklch(43.4% 0.171 352.9) |
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 #900D59 | 8.79:1 | AAA | Lc -92.9 | Preferred for body text |
| Black text on #900D59 | 2.38:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #900D59 text on white | 8.79:1 | AAA | Lc 88.3 | Fine for body text |
| #900D59 text on black | 2.38:1 | Fails | Lc -13.9 | 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
#FDF2F6
oklch(97.1% 0.013 353.1)
-
Step 100
100
#FAE2EB
oklch(93.5% 0.029 352.9)
-
Step 200
200
#F8CBDC
oklch(88.6% 0.055 353.6)
-
Step 300
300
#F4A6C6
oklch(81% 0.1 353.3)
-
Step 400
400
#EA72A9
oklch(70.8% 0.159 353.2)
-
Step 500
500
#DF4494
oklch(63% 0.204 352.9)
-
Step 600
600
#CA127F
oklch(55.5% 0.222 352.6)
-
Step 700
700
#AD006B
oklch(49% 0.203 352.6)
-
Step 800
800 (this color)
#900D59
oklch(43.4% 0.171 352.9)
-
Step 900
900
#721748
oklch(37.7% 0.133 352.7)
-
Step 950
950
#43102A
oklch(27% 0.084 352.8)
#900D59 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) | #2D3C5B | 0.195 |
| Deuteranopia (no green cones) | #515356 | 0.172 |
| Tritanopia (no blue cones) | #9C0034 | 0.064 |
| Achromatopsia (no color) | #4A4A4A | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #900D59
#900D59
oklch(43.4% 0.171 352.9)
- #005F4C
#005F4C
oklch(43.3% 0.083 172.9)
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 #900D59, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mulberry #920A4E ΔE 0.019
- Dark Fuchsia #9D0759 ΔE 0.027
- Berry #990F4B ΔE 0.033
- Deep Magenta #A0025C ΔE 0.033
- Purple Red #990147 ΔE 0.035
- Red Violet #9E0168 ΔE 0.037
- Red Purple #820747 ΔE 0.041
- Violet Red #A50055 ΔE 0.045
Use #900D59 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.