#552F6E
Closest named color: Dark Slate Blue (#483D8B). oklch(38.3% 0.11 310.1), rgb(85, 47, 110).
Aa
White text reads best on this color (10.40:1).
About this color
#552F6E is a dark, moderately saturated purple. In OKLCH its lightness is 38%, its chroma 0.110 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 0.060 away. White text reads best on it, at 10.40:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | moderately saturated (0.110) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.01:1 |
| White text | 10.40:1 |
Values
| HEX | #552F6E |
| RGB | rgb(85, 47, 110) |
| HSL | hsl(276, 40%, 31%) |
| OKLCH | oklch(38.3% 0.11 310.1) |
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 #552F6E | 10.40:1 | AAA | Lc -97.9 | Preferred for body text |
| Black text on #552F6E | 2.01:1 | Fails | Lc 10.1 | Not readable |
| #552F6E text on white | 10.40:1 | AAA | Lc 93.8 | Preferred for body text |
| #552F6E text on black | 2.01:1 | Fails | Lc -8.7 | 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
#F8F3FB
oklch(97% 0.012 313.2)
-
Step 100
100
#EFE6F6
oklch(93.7% 0.023 310.7)
-
Step 200
200
#E2D1F0
oklch(88.4% 0.046 309.9)
-
Step 300
300
#D1B2E9
oklch(80.9% 0.083 310.1)
-
Step 400
400
#BA88DE
oklch(70.7% 0.132 310.1)
-
Step 500
500
#A867D4
oklch(63% 0.169 309.9)
-
Step 600
600
#944CC1
oklch(55.7% 0.182 310.2)
-
Step 700
700
#7E3CA7
oklch(49.2% 0.17 310)
-
Step 800
800
#663287
oklch(42.6% 0.141 309.9)
-
Step 900
900 (this color)
#552F6E
oklch(38.3% 0.11 310.1)
-
Step 950
950
#311B3F
oklch(27% 0.069 310.8)
#552F6E 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) | #1C3E70 | 0.092 |
| Deuteranopia (no green cones) | #29406C | 0.082 |
| Tritanopia (no blue cones) | #523A49 | 0.078 |
| Achromatopsia (no color) | #404040 | 0.110 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #552F6E
#552F6E
oklch(38.3% 0.11 310.1)
- #304D00
#304D00
oklch(38.2% 0.103 130)
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 #552F6E, 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
- Rebecca Purple #663399 ΔE 0.078
- Blueberry #464196 ΔE 0.079
- Royal Purple #4B006E ΔE 0.082
- Indigo #4B0082 ΔE 0.085
- Rich Purple #720058 ΔE 0.088
- Plum Purple #4E0550 ΔE 0.091
Use #552F6E 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.