#900151
Closest named color: Mulberry (#920A4E). oklch(42.6% 0.174 356.4), rgb(144, 1, 81).
Aa
White text reads best on this color (9.09:1).
About this color
#900151 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.174 and its hue 356°. Its hue sits on the warm side of the wheel. The nearest named color is Mulberry (#920A4E), ΔE 0.011 away. White text reads best on it, at 9.09:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.174) |
| Temperature | warm |
| Nearest name | Mulberry (#920A4E) |
| Black text | 2.30:1 |
| White text | 9.09:1 |
Values
| HEX | #900151 |
| RGB | rgb(144, 1, 81) |
| HSL | hsl(326, 99%, 28%) |
| OKLCH | oklch(42.6% 0.174 356.4) |
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 #900151 | 9.09:1 | AAA | Lc -93.3 | Preferred for body text |
| Black text on #900151 | 2.30:1 | Fails | Lc 15.3 | Dividers and decoration only |
| #900151 text on white | 9.09:1 | AAA | Lc 88.7 | Fine for body text |
| #900151 text on black | 2.30:1 | Fails | Lc -13.5 | 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
#FEF2F6
oklch(97.2% 0.014 355)
-
Step 100
100
#FBE2EA
oklch(93.5% 0.029 356.3)
-
Step 200
200
#F9CADA
oklch(88.4% 0.057 355.9)
-
Step 300
300
#F6A5C2
oklch(80.9% 0.102 356.5)
-
Step 400
400
#ED70A3
oklch(70.7% 0.163 356.4)
-
Step 500
500
#E3418D
oklch(63.1% 0.208 356.2)
-
Step 600
600
#CE0577
oklch(55.6% 0.226 356.2)
-
Step 700
700
#AF0063
oklch(49.1% 0.201 356.6)
-
Step 800
800 (this color)
#900151
oklch(42.6% 0.174 356.4)
-
Step 900
900
#741443
oklch(37.7% 0.135 356.6)
-
Step 950
950
#440F27
oklch(26.9% 0.085 356.7)
#900151 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) | #2D3953 | 0.198 |
| Deuteranopia (no green cones) | #52514E | 0.174 |
| Tritanopia (no blue cones) | #9D002D | 0.065 |
| Achromatopsia (no color) | #484848 | 0.175 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #900151
#900151
oklch(42.6% 0.174 356.4)
- #005D4D
#005D4D
oklch(42.7% 0.08 175.6)
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 #900151, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mulberry #920A4E ΔE 0.011
- Purple Red #990147 ΔE 0.028
- Berry #990F4B ΔE 0.029
- Dark Fuchsia #9D0759 ΔE 0.031
- Red Purple #820747 ΔE 0.033
- Deep Magenta #A0025C ΔE 0.038
- Wine #80013F ΔE 0.044
- Red Violet #9E0168 ΔE 0.046
Use #900151 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.