#552F9B
Closest named color: Rebecca Purple (#663399). oklch(41.7% 0.166 294.2), rgb(85, 47, 155).
Aa
White text reads best on this color (9.26:1).
About this color
#552F9B is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.166 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.035 away. White text reads best on it, at 9.26:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.166) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #552F9B |
| RGB | rgb(85, 47, 155) |
| HSL | hsl(261, 53%, 40%) |
| OKLCH | oklch(41.7% 0.166 294.2) |
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 #552F9B | 9.26:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #552F9B | 2.26:1 | Fails | Lc 13.2 | Not readable |
| #552F9B text on white | 9.26:1 | AAA | Lc 90.8 | Preferred for body text |
| #552F9B text on black | 2.26:1 | Fails | Lc -11.6 | 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
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#EAE7FB
oklch(93.6% 0.027 292.8)
-
Step 200
200
#DBD3FA
oklch(88.6% 0.054 294.7)
-
Step 300
300
#C4B5F9
oklch(80.9% 0.096 294.3)
-
Step 400
400
#A78BF7
oklch(70.7% 0.155 294)
-
Step 500
500
#9369F3
oklch(63% 0.198 294)
-
Step 600
600
#7F4BE1
oklch(55.5% 0.215 294.2)
-
Step 700
700
#6C3BC4
oklch(49.1% 0.2 294.2)
-
Step 800
800 (this color)
#552F9B
oklch(41.7% 0.166 294.2)
-
Step 900
900
#482E7E
oklch(37.8% 0.129 294.3)
-
Step 950
950
#2A1C4A
oklch(27.1% 0.082 294.3)
#552F9B 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) | #00489E | 0.100 |
| Deuteranopia (no green cones) | #004599 | 0.100 |
| Tritanopia (no blue cones) | #414A61 | 0.131 |
| Achromatopsia (no color) | #474747 | 0.167 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #552F9B
#552F9B
oklch(41.7% 0.166 294.2)
- #4C5100
#4C5100
oklch(41.6% 0.093 113.8)
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 #552F9B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.035
- Dark Slate Blue #483D8B ΔE 0.046
- Blueberry #464196 ΔE 0.046
- Chrysanthemum #560BAD ΔE 0.051
- Imperial Purple #480CA8 ΔE 0.059
- Indigo Blue #3A18B1 ΔE 0.075
- Blue With A Hint Of Purple #533CC6 ΔE 0.075
- Grape #7209B7 ΔE 0.077
Use #552F9B 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.