#552B72
Closest named color: Dark Slate Blue (#483D8B). oklch(37.9% 0.121 309), rgb(85, 43, 114).
Aa
White text reads best on this color (10.63:1).
About this color
#552B72 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.121 and its hue 309°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.060 away. White text reads best on it, at 10.63:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.121) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.97:1 |
| White text | 10.63:1 |
Values
| HEX | #552B72 |
| RGB | rgb(85, 43, 114) |
| HSL | hsl(275, 45%, 31%) |
| OKLCH | oklch(37.9% 0.121 309) |
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 #552B72 | 10.63:1 | AAA | Lc -98.2 | Preferred for body text |
| Black text on #552B72 | 1.97:1 | Fails | Lc 9.7 | Not readable |
| #552B72 text on white | 10.63:1 | AAA | Lc 94.3 | Preferred for body text |
| #552B72 text on black | 1.97:1 | Fails | Lc -8.3 | 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 900.
-
Step 50
50
#F8F3FC
oklch(97.1% 0.013 310.5)
-
Step 100
100
#EFE5F8
oklch(93.5% 0.027 309.2)
-
Step 200
200
#E3D1F3
oklch(88.6% 0.05 309.1)
-
Step 300
300
#D2B1EE
oklch(81% 0.091 309)
-
Step 400
400
#BB85E5
oklch(70.7% 0.146 309)
-
Step 500
500
#AA63DD
oklch(63.1% 0.186 308.9)
-
Step 600
600
#9645CA
oklch(55.6% 0.202 309.3)
-
Step 700
700
#8035AF
oklch(49.1% 0.188 309.2)
-
Step 800
800
#682E8E
oklch(42.8% 0.155 309)
-
Step 900
900 (this color)
#552B72
oklch(37.9% 0.121 309)
-
Step 950
950
#311A42
oklch(27% 0.076 308.7)
#552B72 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) | #0F3D74 | 0.104 |
| Deuteranopia (no green cones) | #223F70 | 0.092 |
| Tritanopia (no blue cones) | #51384A | 0.084 |
| Achromatopsia (no color) | #3E3E3E | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #552B72
#552B72
oklch(37.9% 0.121 309)
- #314C00
#314C00
oklch(38% 0.101 129.1)
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 #552B72, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.060
- Grape Purple #5D1451 ΔE 0.069
- Royal Purple #4B006E ΔE 0.073
- Indigo #4B0082 ΔE 0.073
- Rebecca Purple #663399 ΔE 0.073
- Blueberry #464196 ΔE 0.079
- Rich Purple #720058 ΔE 0.087
- Plum Purple #4E0550 ΔE 0.087
Use #552B72 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.