#552B70
Closest named color: Dark Slate Blue (#483D8B). oklch(37.8% 0.119 310), rgb(85, 43, 112).
Aa
White text reads best on this color (10.68:1).
About this color
#552B70 is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.119 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.062 away. White text reads best on it, at 10.68:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.119) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 1.96:1 |
| White text | 10.68:1 |
Values
| HEX | #552B70 |
| RGB | rgb(85, 43, 112) |
| HSL | hsl(277, 45%, 30%) |
| OKLCH | oklch(37.8% 0.119 310) |
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 #552B70 | 10.68:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #552B70 | 1.96:1 | Fails | Lc 9.5 | Not readable |
| #552B70 text on white | 10.68:1 | AAA | Lc 94.4 | Preferred for body text |
| #552B70 text on black | 1.96:1 | Fails | Lc -8.2 | 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
#EFE5F7
oklch(93.5% 0.026 310.4)
-
Step 200
200
#E3D1F2
oklch(88.5% 0.049 309.7)
-
Step 300
300
#D2B1EC
oklch(80.9% 0.089 309.8)
-
Step 400
400
#BC86E3
oklch(70.8% 0.142 309.9)
-
Step 500
500
#AB63DA
oklch(63.1% 0.183 310.1)
-
Step 600
600
#9646C8
oklch(55.6% 0.199 309.7)
-
Step 700
700
#8036AD
oklch(49.1% 0.185 309.7)
-
Step 800
800
#682E8C
oklch(42.7% 0.153 309.8)
-
Step 900
900 (this color)
#552B70
oklch(37.8% 0.119 310)
-
Step 950
950
#321A41
oklch(27.1% 0.075 310.8)
#552B70 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) | #123C72 | 0.103 |
| Deuteranopia (no green cones) | #243F6E | 0.091 |
| Tritanopia (no blue cones) | #513849 | 0.083 |
| Achromatopsia (no color) | #3E3E3E | 0.120 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #552B70
#552B70
oklch(37.8% 0.119 310)
- #2F4C00
#2F4C00
oklch(37.9% 0.102 130.1)
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 #552B70, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.062
- Grape Purple #5D1451 ΔE 0.066
- Royal Purple #4B006E ΔE 0.073
- Indigo #4B0082 ΔE 0.075
- Rebecca Purple #663399 ΔE 0.076
- Blueberry #464196 ΔE 0.081
- Plum Purple #4E0550 ΔE 0.085
- Rich Purple #720058 ΔE 0.086
Use #552B70 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.