#552381
Closest named color: Indigo (#4B0082). oklch(38% 0.151 304.4), rgb(85, 35, 129).
Aa
White text reads best on this color (10.80:1).
About this color
#552381 is a dark, vivid purple. In OKLCH its lightness is 38%, its chroma 0.151 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Indigo (#4B0082), ΔE 0.050 away. White text reads best on it, at 10.80:1.
| Hue family | Purples |
| Lightness | dark (38%) |
| Chroma | vivid (0.151) |
| Temperature | in between |
| Nearest name | Indigo (#4B0082) |
| Black text | 1.94:1 |
| White text | 10.80:1 |
Values
| HEX | #552381 |
| RGB | rgb(85, 35, 129) |
| HSL | hsl(272, 57%, 32%) |
| OKLCH | oklch(38% 0.151 304.4) |
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 #552381 | 10.80:1 | AAA | Lc -98.3 | Preferred for body text |
| Black text on #552381 | 1.94:1 | Fails | Lc 9.6 | Not readable |
| #552381 text on white | 10.80:1 | AAA | Lc 94.3 | Preferred for body text |
| #552381 text on black | 1.94:1 | 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
#F8F3FE
oklch(97.1% 0.015 306.4)
-
Step 100
100
#EEE5FC
oklch(93.6% 0.032 303.5)
-
Step 200
200
#E2CFFB
oklch(88.4% 0.063 304.7)
-
Step 300
300
#D1AEFC
oklch(80.9% 0.114 304.5)
-
Step 400
400
#BA7FFA
oklch(70.7% 0.181 304.3)
-
Step 500
500
#AA57F7
oklch(63.2% 0.23 304.4)
-
Step 600
600
#9631E6
oklch(55.6% 0.251 304.3)
-
Step 700
700
#801FC8
oklch(49.1% 0.234 304.3)
-
Step 800
800
#681FA1
oklch(42.7% 0.193 304.5)
-
Step 900
900 (this color)
#552381
oklch(38% 0.151 304.4)
-
Step 950
950
#31164B
oklch(27% 0.095 304.1)
#552381 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) | #003C84 | 0.115 |
| Deuteranopia (no green cones) | #003D7F | 0.116 |
| Tritanopia (no blue cones) | #4D394F | 0.109 |
| Achromatopsia (no color) | #3D3D3D | 0.152 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #552381
#552381
oklch(38% 0.151 304.4)
- #374A00
#374A00
oklch(37.9% 0.095 124.6)
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 #552381, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Indigo #4B0082 ΔE 0.050
- Rebecca Purple #663399 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.062
- Royal Purple #4B006E ΔE 0.063
- Chrysanthemum #560BAD ΔE 0.076
- Blueberry #464196 ΔE 0.076
- Imperial Purple #480CA8 ΔE 0.077
- Grape Purple #5D1451 ΔE 0.087
Use #552381 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.