#900552
Closest named color: Mulberry (#920A4E). oklch(42.8% 0.172 356.1), rgb(144, 5, 82).
Aa
White text reads best on this color (9.01:1).
About this color
#900552 is a dark, vivid red. In OKLCH its lightness is 43%, its chroma 0.172 and its hue 356°. Its hue sits on the warm side of the wheel. The nearest named color is Mulberry (#920A4E), ΔE 0.010 away. White text reads best on it, at 9.01:1.
| Hue family | Reds |
| Lightness | dark (43%) |
| Chroma | vivid (0.172) |
| Temperature | warm |
| Nearest name | Mulberry (#920A4E) |
| Black text | 2.32:1 |
| White text | 9.01:1 |
Values
| HEX | #900552 |
| RGB | rgb(144, 5, 82) |
| HSL | hsl(327, 93%, 29%) |
| OKLCH | oklch(42.8% 0.172 356.1) |
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 #900552 | 9.01:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #900552 | 2.32:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #900552 text on white | 9.01:1 | AAA | Lc 88.6 | Fine for body text |
| #900552 text on black | 2.32:1 | 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
#FBE2EA
oklch(93.5% 0.029 356.3)
-
Step 200
200
#F9CBDA
oklch(88.6% 0.055 356.8)
-
Step 300
300
#F5A5C2
oklch(80.8% 0.101 356.2)
-
Step 400
400
#EC71A4
oklch(70.7% 0.161 355.9)
-
Step 500
500
#E2428D
oklch(63.1% 0.206 356.1)
-
Step 600
600
#CD0B77
oklch(55.6% 0.223 356.1)
-
Step 700
700
#AF0064
oklch(49.1% 0.201 356.2)
-
Step 800
800 (this color)
#900552
oklch(42.8% 0.172 356.1)
-
Step 900
900
#741544
oklch(37.8% 0.135 356)
-
Step 950
950
#440F28
oklch(27% 0.085 355.5)
#900552 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) | #2E3954 | 0.196 |
| Deuteranopia (no green cones) | #52514F | 0.172 |
| Tritanopia (no blue cones) | #9D002F | 0.063 |
| Achromatopsia (no color) | #494949 | 0.173 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #900552
#900552
oklch(42.8% 0.172 356.1)
- #005D4E
#005D4E
oklch(42.8% 0.079 176.7)
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 #900552, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Mulberry #920A4E ΔE 0.010
- Purple Red #990147 ΔE 0.028
- Berry #990F4B ΔE 0.028
- Dark Fuchsia #9D0759 ΔE 0.030
- Red Purple #820747 ΔE 0.034
- Deep Magenta #A0025C ΔE 0.037
- Red Violet #9E0168 ΔE 0.045
- Violet Red #A50055 ΔE 0.045
Use #900552 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.