#5B2C80
Closest named color: Rebecca Purple (#663399). oklch(39.9% 0.138 306.9), rgb(91, 44, 128).
Aa
White text reads best on this color (9.92:1).
About this color
#5B2C80 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.138 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.048 away. White text reads best on it, at 9.92:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.138) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.11:1 |
| White text | 9.92:1 |
Values
| HEX | #5B2C80 |
| RGB | rgb(91, 44, 128) |
| HSL | hsl(274, 49%, 34%) |
| OKLCH | oklch(39.9% 0.138 306.9) |
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 #5B2C80 | 9.92:1 | AAA | Lc -96.7 | Preferred for body text |
| Black text on #5B2C80 | 2.11:1 | Fails | Lc 11.4 | Not readable |
| #5B2C80 text on white | 9.92:1 | AAA | Lc 92.5 | Preferred for body text |
| #5B2C80 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
#F8F3FD
oklch(97.1% 0.014 308.3)
-
Step 100
100
#EFE5FA
oklch(93.6% 0.03 307.1)
-
Step 200
200
#E3D0F8
oklch(88.6% 0.058 306.7)
-
Step 300
300
#D2AFF5
oklch(80.9% 0.103 307)
-
Step 400
400
#BC81F0
oklch(70.7% 0.166 307.2)
-
Step 500
500
#AB5CEB
oklch(63.1% 0.211 306.8)
-
Step 600
600
#973AD9
oklch(55.6% 0.23 307)
-
Step 700
700
#812ABC
oklch(49.1% 0.214 307)
-
Step 800
800
#692598
oklch(42.6% 0.178 307.3)
-
Step 900
900 (this color)
#5B2C80
oklch(39.9% 0.138 306.9)
-
Step 950
950
#321747
oklch(27% 0.088 307.4)
#5B2C80 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) | #004183 | 0.117 |
| Deuteranopia (no green cones) | #1B437E | 0.106 |
| Tritanopia (no blue cones) | #553D52 | 0.097 |
| Achromatopsia (no color) | #434343 | 0.139 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B2C80
#5B2C80
oklch(39.9% 0.138 306.9)
- #385100
#385100
oklch(39.9% 0.103 127.2)
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 #5B2C80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.048
- Dark Slate Blue #483D8B ΔE 0.052
- Blueberry #464196 ΔE 0.067
- Indigo #4B0082 ΔE 0.074
- Royal Purple #4B006E ΔE 0.083
- Purple #800080 ΔE 0.085
- Chrysanthemum #560BAD ΔE 0.086
- Grape Purple #5D1451 ΔE 0.088
Use #5B2C80 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.