#5B2D80
Closest named color: Rebecca Purple (#663399). oklch(40% 0.137 306.7), rgb(91, 45, 128).
Aa
White text reads best on this color (9.85:1).
About this color
#5B2D80 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.137 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 0.047 away. White text reads best on it, at 9.85:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.137) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.13:1 |
| White text | 9.85:1 |
Values
| HEX | #5B2D80 |
| RGB | rgb(91, 45, 128) |
| HSL | hsl(273, 48%, 34%) |
| OKLCH | oklch(40% 0.137 306.7) |
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 #5B2D80 | 9.85:1 | AAA | Lc -96.6 | Preferred for body text |
| Black text on #5B2D80 | 2.13:1 | Fails | Lc 11.6 | Not readable |
| #5B2D80 text on white | 9.85:1 | AAA | Lc 92.4 | Preferred for body text |
| #5B2D80 text on black | 2.13:1 | Fails | Lc -10.1 | 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
#E3D0F7
oklch(88.5% 0.057 307.2)
-
Step 300
300
#D2AFF5
oklch(80.9% 0.103 307)
-
Step 400
400
#BB82F0
oklch(70.7% 0.164 306.6)
-
Step 500
500
#AB5CEA
oklch(63% 0.21 307)
-
Step 600
600
#963BD9
oklch(55.5% 0.229 306.5)
-
Step 700
700
#802BBC
oklch(49% 0.213 306.5)
-
Step 800
800
#682798
oklch(42.7% 0.175 306.5)
-
Step 900
900 (this color)
#5B2D80
oklch(40% 0.137 306.7)
-
Step 950
950
#311847
oklch(27% 0.086 306)
#5B2D80 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) | #004283 | 0.117 |
| Deuteranopia (no green cones) | #1C447E | 0.105 |
| Tritanopia (no blue cones) | #553E52 | 0.098 |
| Achromatopsia (no color) | #434343 | 0.138 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B2D80
#5B2D80
oklch(40% 0.137 306.7)
- #395100
#395100
oklch(40% 0.103 126.7)
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 #5B2D80, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.047
- Dark Slate Blue #483D8B ΔE 0.051
- Blueberry #464196 ΔE 0.065
- Indigo #4B0082 ΔE 0.076
- Royal Purple #4B006E ΔE 0.085
- Purple #800080 ΔE 0.086
- Chrysanthemum #560BAD ΔE 0.087
- Grape Purple #5D1451 ΔE 0.089
Use #5B2D80 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.