#901B53
Closest named color: Mulberry (#920A4E). oklch(43.9% 0.158 357.3), rgb(144, 27, 83).
Aa
White text reads best on this color (8.51:1).
About this color
#901B53 is a dark, vivid red. In OKLCH its lightness is 44%, its chroma 0.158 and its hue 357°. Its hue sits on the warm side of the wheel. The nearest named color is Mulberry (#920A4E), ΔE 0.015 away. White text reads best on it, at 8.51:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | vivid (0.158) |
| Temperature | warm |
| Nearest name | Mulberry (#920A4E) |
| Black text | 2.46:1 |
| White text | 8.51:1 |
Values
| HEX | #901B53 |
| RGB | rgb(144, 27, 83) |
| HSL | hsl(331, 68%, 34%) |
| OKLCH | oklch(43.9% 0.158 357.3) |
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 #901B53 | 8.51:1 | AAA | Lc -92.6 | Preferred for body text |
| Black text on #901B53 | 2.46:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #901B53 text on white | 8.51:1 | AAA | Lc 87.9 | Fine for body text |
| #901B53 text on black | 2.46:1 | Fails | Lc -14.2 | 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
#FDF2F5
oklch(97.1% 0.012 358.8)
-
Step 100
100
#FAE3EA
oklch(93.6% 0.027 357.2)
-
Step 200
200
#F7CCD9
oklch(88.6% 0.051 358.1)
-
Step 300
300
#F2A8C1
oklch(80.9% 0.092 357.4)
-
Step 400
400
#E776A1
oklch(70.7% 0.147 357.4)
-
Step 500
500
#DD4C8A
oklch(63.2% 0.188 357.6)
-
Step 600
600
#C82474
oklch(55.6% 0.205 357.4)
-
Step 700
700
#AC1261
oklch(49% 0.191 357.5)
-
Step 800
800 (this color)
#901B53
oklch(43.9% 0.158 357.3)
-
Step 900
900
#711C42
oklch(37.8% 0.123 357.6)
-
Step 950
950
#421227
oklch(26.9% 0.078 356.6)
#901B53 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) | #363F54 | 0.178 |
| Deuteranopia (no green cones) | #565450 | 0.158 |
| Tritanopia (no blue cones) | #9C0435 | 0.050 |
| Achromatopsia (no color) | #4D4D4D | 0.159 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #901B53
#901B53
oklch(43.9% 0.158 357.3)
- #006152
#006152
oklch(44.1% 0.082 177.3)
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 #901B53, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mulberry #920A4E ΔE 0.015
- Berry #990F4B ΔE 0.022
- Purple Red #990147 ΔE 0.027
- Dark Fuchsia #9D0759 ΔE 0.030
- Deep Magenta #A0025C ΔE 0.037
- Red Purple #820747 ΔE 0.042
- Violet Red #A50055 ΔE 0.043
- Cranberry #9E003A ΔE 0.047
Use #901B53 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.