#552B80
Closest named color: Dark Slate Blue (#483D8B). oklch(39% 0.138 303.2), rgb(85, 43, 128).
Aa
White text reads best on this color (10.27:1).
About this color
#552B80 is a dark, moderately saturated purple. In OKLCH its lightness is 39%, its chroma 0.138 and its hue 303°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.048 away. White text reads best on it, at 10.27:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.04:1 |
| White text | 10.27:1 |
Values
| HEX | #552B80 |
| RGB | rgb(85, 43, 128) |
| HSL | hsl(270, 50%, 34%) |
| OKLCH | oklch(39% 0.138 303.2) |
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 #552B80 | 10.27:1 | AAA | Lc -97.5 | Preferred for body text |
| Black text on #552B80 | 2.04:1 | Fails | Lc 10.6 | Not readable |
| #552B80 text on white | 10.27:1 | AAA | Lc 93.4 | Preferred for body text |
| #552B80 text on black | 2.04:1 | Fails | Lc -9.1 | 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
#F7F3FD
oklch(97% 0.014 304.1)
-
Step 100
100
#EEE5FB
oklch(93.5% 0.031 304.3)
-
Step 200
200
#E1D1F9
oklch(88.6% 0.057 303.4)
-
Step 300
300
#CEB0F8
oklch(80.8% 0.104 303.2)
-
Step 400
400
#B683F4
oklch(70.6% 0.166 303.2)
-
Step 500
500
#A55EF0
oklch(63% 0.213 303.2)
-
Step 600
600
#913DDE
oklch(55.5% 0.231 303.3)
-
Step 700
700
#7C2DC1
oklch(49.1% 0.215 303.4)
-
Step 800
800
#64289C
oklch(42.6% 0.177 303.1)
-
Step 900
900 (this color)
#552B80
oklch(39% 0.138 303.2)
-
Step 950
950
#301849
oklch(27% 0.089 303.6)
#552B80 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) | #004083 | 0.108 |
| Deuteranopia (no green cones) | #0F407E | 0.103 |
| Tritanopia (no blue cones) | #4D3D51 | 0.101 |
| Achromatopsia (no color) | #414141 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #552B80
#552B80
oklch(39% 0.138 303.2)
- #3B4D00
#3B4D00
oklch(39.1% 0.096 123.6)
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 #552B80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.048
- Rebecca Purple #663399 ΔE 0.055
- Blueberry #464196 ΔE 0.064
- Indigo #4B0082 ΔE 0.065
- Royal Purple #4B006E ΔE 0.076
- Chrysanthemum #560BAD ΔE 0.082
- Imperial Purple #480CA8 ΔE 0.084
- Grape Purple #5D1451 ΔE 0.089
Use #552B80 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.