#552C8A
Closest named color: Dark Slate Blue (#483D8B). oklch(39.9% 0.149 299.6), rgb(85, 44, 138).
Aa
White text reads best on this color (9.93:1).
About this color
#552C8A is a dark, vivid purple. In OKLCH its lightness is 40%, its chroma 0.149 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.043 away. White text reads best on it, at 9.93:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | vivid (0.149) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.11:1 |
| White text | 9.93:1 |
Values
| HEX | #552C8A |
| RGB | rgb(85, 44, 138) |
| HSL | hsl(266, 52%, 36%) |
| OKLCH | oklch(39.9% 0.149 299.6) |
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 #552C8A | 9.93:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #552C8A | 2.11:1 | Fails | Lc 11.4 | Not readable |
| #552C8A text on white | 9.93:1 | AAA | Lc 92.5 | Preferred for body text |
| #552C8A text on black | 2.11:1 | Fails | Lc -9.9 | 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
#F7F3FE
oklch(97% 0.015 302.6)
-
Step 100
100
#EDE6FD
oklch(93.7% 0.032 299.7)
-
Step 200
200
#DFD1FD
oklch(88.6% 0.062 299.7)
-
Step 300
300
#CBB0FF
oklch(80.9% 0.113 299.6)
-
Step 400
400
#B282FE
oklch(70.6% 0.179 299.7)
-
Step 500
500
#A15CFC
oklch(63.2% 0.228 299.7)
-
Step 600
600
#8D38EB
oklch(55.6% 0.248 299.6)
-
Step 700
700
#7827CD
oklch(49.1% 0.231 299.4)
-
Step 800
800
#6224A5
oklch(42.7% 0.191 299.9)
-
Step 900
900 (this color)
#552C8A
oklch(39.9% 0.149 299.6)
-
Step 950
950
#2E174D
oklch(26.9% 0.095 299.5)
#552C8A 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) | #00438D | 0.106 |
| Deuteranopia (no green cones) | #004288 | 0.107 |
| Tritanopia (no blue cones) | #494257 | 0.113 |
| Achromatopsia (no color) | #434343 | 0.150 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #552C8A
#552C8A
oklch(39.9% 0.149 299.6)
- #424E00
#424E00
oklch(39.9% 0.094 119.3)
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 #552C8A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.043
- Rebecca Purple #663399 ΔE 0.044
- Blueberry #464196 ΔE 0.055
- Indigo #4B0082 ΔE 0.067
- Chrysanthemum #560BAD ΔE 0.068
- Imperial Purple #480CA8 ΔE 0.072
- Royal Purple #4B006E ΔE 0.085
- Indigo Blue #3A18B1 ΔE 0.091
Use #552C8A 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.