#901B49
Closest named color: Mulberry (#920A4E). oklch(43.6% 0.154 3.1), rgb(144, 27, 73).
Aa
White text reads best on this color (8.61:1).
About this color
#901B49 is a dark, vivid red. In OKLCH its lightness is 44%, its chroma 0.154 and its hue 3°. 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 8.61:1.
| Hue family | Reds |
| Lightness | dark (44%) |
| Chroma | vivid (0.154) |
| Temperature | warm |
| Nearest name | Mulberry (#920A4E) |
| Black text | 2.43:1 |
| White text | 8.61:1 |
Values
| HEX | #901B49 |
| RGB | rgb(144, 27, 73) |
| HSL | hsl(336, 68%, 34%) |
| OKLCH | oklch(43.6% 0.154 3.1) |
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 #901B49 | 8.61:1 | AAA | Lc -92.8 | Preferred for body text |
| Black text on #901B49 | 2.43:1 | Fails | Lc 15.8 | Dividers and decoration only |
| #901B49 text on white | 8.61:1 | AAA | Lc 88.2 | Fine for body text |
| #901B49 text on black | 2.43:1 | Fails | Lc -14.0 | 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
#FDF2F4
oklch(97% 0.012 4.7)
-
Step 100
100
#FAE3E8
oklch(93.6% 0.026 2.8)
-
Step 200
200
#F7CCD6
oklch(88.5% 0.05 2.5)
-
Step 300
300
#F3A8BB
oklch(80.9% 0.091 2.7)
-
Step 400
400
#E97798
oklch(70.8% 0.144 3.1)
-
Step 500
500
#DE4D7E
oklch(63.1% 0.184 3.3)
-
Step 600
600
#C92668
oklch(55.5% 0.201 2.9)
-
Step 700
700
#AE1556
oklch(49.2% 0.187 3.3)
-
Step 800
800 (this color)
#901B49
oklch(43.6% 0.154 3.1)
-
Step 900
900
#711D3B
oklch(37.7% 0.119 3.2)
-
Step 950
950
#431323
oklch(27.1% 0.076 3)
#901B49 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) | #393D4A | 0.174 |
| Deuteranopia (no green cones) | #585446 | 0.157 |
| Tritanopia (no blue cones) | #9D0030 | 0.043 |
| Achromatopsia (no color) | #4C4C4C | 0.156 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #901B49
#901B49
oklch(43.6% 0.154 3.1)
- #005F55
#005F55
oklch(43.6% 0.078 182.6)
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 #901B49, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mulberry #920A4E ΔE 0.019
- Berry #990F4B ΔE 0.020
- Purple Red #990147 ΔE 0.023
- Cranberry #9E003A ΔE 0.036
- Red Wine #8C0034 ΔE 0.036
- Dark Fuchsia #9D0759 ΔE 0.039
- Red Purple #820747 ΔE 0.041
- Deep Magenta #A0025C ΔE 0.047
Use #901B49 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.