#900D47
Closest named color: Mulberry (#920A4E). oklch(42.7% 0.164 2.6), rgb(144, 13, 71).
Aa
White text reads best on this color (8.99:1).
About this color
#900D47 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.164 and its hue 3°. Its hue sits on the warm side of the wheel. The nearest named color is Mulberry (#920A4E), ΔE 0.012 away. White text reads best on it, at 8.99:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.164) |
| Temperature | warm |
| Nearest name | Mulberry (#920A4E) |
| Black text | 2.33:1 |
| White text | 8.99:1 |
Values
| HEX | #900D47 |
| RGB | rgb(144, 13, 71) |
| HSL | hsl(333, 83%, 31%) |
| OKLCH | oklch(42.7% 0.164 2.6) |
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 #900D47 | 8.99:1 | AAA | Lc -93.4 | Preferred for body text |
| Black text on #900D47 | 2.33:1 | Fails | Lc 15.2 | Dividers and decoration only |
| #900D47 text on white | 8.99:1 | AAA | Lc 88.8 | Fine for body text |
| #900D47 text on black | 2.33:1 | Fails | Lc -13.4 | 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
#FEF2F5
oklch(97.1% 0.013 0.3)
-
Step 100
100
#FBE3E8
oklch(93.7% 0.027 3.4)
-
Step 200
200
#F9CBD6
oklch(88.5% 0.054 2.2)
-
Step 300
300
#F5A7BB
oklch(80.9% 0.095 2.6)
-
Step 400
400
#EC7398
oklch(70.6% 0.153 2.5)
-
Step 500
500
#E2467F
oklch(63% 0.196 2.4)
-
Step 600
600
#CE1868
oklch(55.7% 0.214 2.7)
-
Step 700
700
#B10057
oklch(49.1% 0.198 2.4)
-
Step 800
800 (this color)
#900D47
oklch(42.7% 0.164 2.6)
-
Step 900
900
#74183B
oklch(37.7% 0.128 3)
-
Step 950
950
#441123
oklch(27% 0.08 2.5)
#900D47 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) | #343948 | 0.186 |
| Deuteranopia (no green cones) | #555244 | 0.168 |
| Tritanopia (no blue cones) | #9D002A | 0.050 |
| Achromatopsia (no color) | #494949 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #900D47
#900D47
oklch(42.7% 0.164 2.6)
- #005C53
#005C53
oklch(42.6% 0.076 183.4)
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 #900D47, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mulberry #920A4E ΔE 0.012
- Purple Red #990147 ΔE 0.018
- Berry #990F4B ΔE 0.021
- Red Wine #8C0034 ΔE 0.030
- Red Purple #820747 ΔE 0.033
- Cranberry #9E003A ΔE 0.036
- Dark Fuchsia #9D0759 ΔE 0.039
- Wine #80013F ΔE 0.040
Use #900D47 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.