#5B2566
Closest named color: Grape Purple (#5D1451). oklch(37.1% 0.12 320.5), rgb(91, 37, 102).
Aa
White text reads best on this color (11.04:1).
About this color
#5B2566 is a dark, moderately saturated purple. In OKLCH its lightness is 37%, its chroma 0.120 and its hue 321°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Grape Purple (#5D1451), ΔE 0.044 away. White text reads best on it, at 11.04:1.
| Hue family | Purples |
| Lightness | dark (37%) |
| Chroma | moderately saturated (0.120) |
| Temperature | in between |
| Nearest name | Grape Purple (#5D1451) |
| Black text | 1.90:1 |
| White text | 11.04:1 |
Values
| HEX | #5B2566 |
| RGB | rgb(91, 37, 102) |
| HSL | hsl(290, 47%, 27%) |
| OKLCH | oklch(37.1% 0.12 320.5) |
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 #5B2566 | 11.04:1 | AAA | Lc -98.9 | Preferred for body text |
| Black text on #5B2566 | 1.90:1 | Fails | Lc 8.9 | Not readable |
| #5B2566 text on white | 11.04:1 | AAA | Lc 95.0 | Preferred for body text |
| #5B2566 text on black | 1.90:1 | Fails | Lc -7.6 | 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 900.
-
Step 50
50
#F9F3FB
oklch(97.1% 0.012 317.7)
-
Step 100
100
#F2E5F5
oklch(93.7% 0.025 319.9)
-
Step 200
200
#E9CFEE
oklch(88.5% 0.05 320.8)
-
Step 300
300
#DBAEE5
oklch(80.9% 0.09 320.1)
-
Step 400
400
#C881D7
oklch(70.7% 0.143 320.5)
-
Step 500
500
#B95DCC
oklch(63.1% 0.183 320.5)
-
Step 600
600
#A53EB9
oklch(55.6% 0.201 320.7)
-
Step 700
700
#8D2F9F
oklch(49.1% 0.186 320.8)
-
Step 800
800
#722981
oklch(42.7% 0.153 320.4)
-
Step 900
900 (this color)
#5B2566
oklch(37.1% 0.12 320.5)
-
Step 950
950
#36183D
oklch(27% 0.075 319.8)
#5B2566 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) | #163868 | 0.117 |
| Deuteranopia (no green cones) | #2B3E64 | 0.101 |
| Tritanopia (no blue cones) | #5C2F41 | 0.075 |
| Achromatopsia (no color) | #3C3C3C | 0.121 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B2566
#5B2566
oklch(37.1% 0.12 320.5)
- #104E01
#104E01
oklch(37.1% 0.12 140.6)
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 #5B2566, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Grape Purple #5D1451 ΔE 0.044
- Rich Purple #720058 ΔE 0.064
- Velvet #750851 ΔE 0.070
- Plum Purple #4E0550 ΔE 0.071
- Royal Purple #4B006E ΔE 0.071
- Indigo #4B0082 ΔE 0.083
- Deep Violet #490648 ΔE 0.084
- Dark Slate Blue #483D8B ΔE 0.085
Use #5B2566 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.