#900055
Closest named color: Mulberry (#920A4E). oklch(42.7% 0.176 354.3), rgb(144, 0, 85).
Aa
White text reads best on this color (9.06:1).
About this color
#900055 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.176 and its hue 354°. Its hue sits on the warm side of the wheel. The nearest named color is Mulberry (#920A4E), ΔE 0.017 away. White text reads best on it, at 9.06:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.176) |
| Temperature | warm |
| Nearest name | Mulberry (#920A4E) |
| Black text | 2.31:1 |
| White text | 9.06:1 |
Values
| HEX | #900055 |
| RGB | rgb(144, 0, 85) |
| HSL | hsl(325, 100%, 28%) |
| OKLCH | oklch(42.7% 0.176 354.3) |
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 #900055 | 9.06:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #900055 | 2.31:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #900055 text on white | 9.06:1 | AAA | Lc 88.6 | Fine for body text |
| #900055 text on black | 2.31:1 | Fails | Lc -13.6 | 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
#FBE2EB
oklch(93.6% 0.03 353.9)
-
Step 200
200
#F9CADB
oklch(88.5% 0.057 354.7)
-
Step 300
300
#F6A5C5
oklch(81% 0.103 354.3)
-
Step 400
400
#EC70A7
oklch(70.7% 0.163 354.2)
-
Step 500
500
#E24091
oklch(63% 0.21 354.3)
-
Step 600
600
#CD017C
oklch(55.5% 0.228 354)
-
Step 700
700
#AE0068
oklch(49.1% 0.202 354.2)
-
Step 800
800 (this color)
#900055
oklch(42.7% 0.176 354.3)
-
Step 900
900
#741346
oklch(37.7% 0.138 354.4)
-
Step 950
950
#440F29
oklch(27% 0.086 354.3)
#900055 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) | #2B3957 | 0.201 |
| Deuteranopia (no green cones) | #515152 | 0.175 |
| Tritanopia (no blue cones) | #9C002F | 0.068 |
| Achromatopsia (no color) | #494949 | 0.177 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #900055
#900055
oklch(42.7% 0.176 354.3)
- #005D4C
#005D4C
oklch(42.7% 0.081 174.6)
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 #900055, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mulberry #920A4E ΔE 0.017
- Dark Fuchsia #9D0759 ΔE 0.030
- Purple Red #990147 ΔE 0.033
- Berry #990F4B ΔE 0.033
- Deep Magenta #A0025C ΔE 0.036
- Red Purple #820747 ΔE 0.036
- Red Violet #9E0168 ΔE 0.041
- Violet Red #A50055 ΔE 0.047
Use #900055 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.