#5B2D91
Closest named color: Rebecca Purple (#663399). oklch(41.3% 0.157 300.8), rgb(91, 45, 145).
Aa
White text reads best on this color (9.42:1).
About this color
#5B2D91 is a dark, vivid purple. In OKLCH its lightness is 41%, its chroma 0.157 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.029 away. White text reads best on it, at 9.42:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | vivid (0.157) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.22:1 |
| White text | 9.42:1 |
Values
| HEX | #5B2D91 |
| RGB | rgb(91, 45, 145) |
| HSL | hsl(268, 53%, 37%) |
| OKLCH | oklch(41.3% 0.157 300.8) |
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 #5B2D91 | 9.42:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #5B2D91 | 2.22:1 | Fails | Lc 12.8 | Not readable |
| #5B2D91 text on white | 9.42:1 | AAA | Lc 91.2 | Preferred for body text |
| #5B2D91 text on black | 2.22:1 | Fails | Lc -11.2 | 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 800.
-
Step 50
50
#F7F4FD
oklch(97.2% 0.012 301.3)
-
Step 100
100
#ECE6F9
oklch(93.5% 0.026 300.3)
-
Step 200
200
#DED2F6
oklch(88.5% 0.051 300.6)
-
Step 300
300
#CAB3F3
oklch(80.8% 0.092 300.8)
-
Step 400
400
#B089ED
oklch(70.7% 0.147 300.7)
-
Step 500
500
#9E67E7
oklch(63% 0.188 301)
-
Step 600
600
#894AD5
oklch(55.5% 0.204 300.7)
-
Step 700
700
#753AB9
oklch(49.1% 0.19 300.8)
-
Step 800
800 (this color)
#5B2D91
oklch(41.3% 0.157 300.8)
-
Step 900
900
#4D2D77
oklch(37.6% 0.122 300.6)
-
Step 950
950
#2D1B46
oklch(27% 0.078 300.6)
#5B2D91 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) | #004694 | 0.113 |
| Deuteranopia (no green cones) | #00458F | 0.114 |
| Tritanopia (no blue cones) | #4F445B | 0.117 |
| Achromatopsia (no color) | #464646 | 0.158 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B2D91
#5B2D91
oklch(41.3% 0.157 300.8)
- #445200
#445200
oklch(41.2% 0.098 120.3)
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 #5B2D91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.029
- Dark Slate Blue #483D8B ΔE 0.048
- Blueberry #464196 ΔE 0.055
- Chrysanthemum #560BAD ΔE 0.063
- Imperial Purple #480CA8 ΔE 0.072
- Indigo #4B0082 ΔE 0.077
- Grape #7209B7 ΔE 0.080
- Twilight #4E518B ΔE 0.090
Use #5B2D91 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.