#552F8A
Closest named color: Dark Slate Blue (#483D8B). oklch(40.3% 0.145 298.9), rgb(85, 47, 138).
Aa
White text reads best on this color (9.72:1).
About this color
#552F8A is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.145 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.038 away. White text reads best on it, at 9.72:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.145) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.15:1 |
| White text | 9.72:1 |
Values
| HEX | #552F8A |
| RGB | rgb(85, 47, 138) |
| HSL | hsl(265, 49%, 36%) |
| OKLCH | oklch(40.3% 0.145 298.9) |
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 #552F8A | 9.72:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #552F8A | 2.15:1 | Fails | Lc 11.9 | Not readable |
| #552F8A text on white | 9.72:1 | AAA | Lc 92.1 | Preferred for body text |
| #552F8A text on black | 2.15:1 | Fails | Lc -10.3 | 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 800.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#ECE7F8
oklch(93.7% 0.023 299.4)
-
Step 200
200
#DDD3F5
oklch(88.5% 0.047 298.9)
-
Step 300
300
#C8B5F0
oklch(80.9% 0.084 299.3)
-
Step 400
400
#AC8CE9
oklch(70.6% 0.136 298.7)
-
Step 500
500
#996CE2
oklch(63% 0.174 298.9)
-
Step 600
600
#8551D0
oklch(55.7% 0.188 299)
-
Step 700
700
#7040B4
oklch(49% 0.176 298.7)
-
Step 800
800 (this color)
#552F8A
oklch(40.3% 0.145 298.9)
-
Step 900
900
#4B3074
oklch(37.7% 0.113 299.2)
-
Step 950
950
#2C1D44
oklch(27.1% 0.071 299.4)
#552F8A 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) | #00448D | 0.103 |
| Deuteranopia (no green cones) | #004388 | 0.104 |
| Tritanopia (no blue cones) | #494358 | 0.109 |
| Achromatopsia (no color) | #444444 | 0.146 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #552F8A
#552F8A
oklch(40.3% 0.145 298.9)
- #434F00
#434F00
oklch(40.3% 0.095 119.2)
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 #552F8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.038
- Rebecca Purple #663399 ΔE 0.042
- Blueberry #464196 ΔE 0.050
- Chrysanthemum #560BAD ΔE 0.072
- Indigo #4B0082 ΔE 0.073
- Imperial Purple #480CA8 ΔE 0.075
- Twilight #4E518B ΔE 0.086
- Royal Purple #4B006E ΔE 0.090
Use #552F8A 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.