#5B3B98
Closest named color: Rebecca Purple (#663399). oklch(43.9% 0.146 295.7), rgb(91, 59, 152).
Aa
White text reads best on this color (8.32:1).
About this color
#5B3B98 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.146 and its hue 296°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.025 away. White text reads best on it, at 8.32:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.146) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.52:1 |
| White text | 8.32:1 |
Values
| HEX | #5B3B98 |
| RGB | rgb(91, 59, 152) |
| HSL | hsl(261, 44%, 41%) |
| OKLCH | oklch(43.9% 0.146 295.7) |
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 #5B3B98 | 8.32:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #5B3B98 | 2.52:1 | Fails | Lc 15.7 | Dividers and decoration only |
| #5B3B98 text on white | 8.32:1 | AAA | Lc 88.3 | Fine for body text |
| #5B3B98 text on black | 2.52:1 | Fails | Lc -13.8 | 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
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#EBE7F9
oklch(93.6% 0.024 296.1)
-
Step 200
200
#DBD3F6
oklch(88.4% 0.048 295.9)
-
Step 300
300
#C5B6F2
oklch(80.9% 0.085 295.9)
-
Step 400
400
#A88EEC
oklch(70.8% 0.136 295.4)
-
Step 500
500
#946EE5
oklch(63% 0.174 295.7)
-
Step 600
600
#7F53D3
oklch(55.6% 0.188 295.4)
-
Step 700
700
#6C42B7
oklch(49.1% 0.176 295.7)
-
Step 800
800 (this color)
#5B3B98
oklch(43.9% 0.146 295.7)
-
Step 900
900
#483176
oklch(37.7% 0.114 295.8)
-
Step 950
950
#2A1D45
oklch(26.9% 0.073 296.2)
#5B3B98 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) | #004F9B | 0.101 |
| Deuteranopia (no green cones) | #0E4D96 | 0.097 |
| Tritanopia (no blue cones) | #4C4F64 | 0.113 |
| Achromatopsia (no color) | #4E4E4E | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3B98
#5B3B98
oklch(43.9% 0.146 295.7)
- #505800
#505800
oklch(43.8% 0.1 115.7)
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 #5B3B98, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.025
- Blueberry #464196 ΔE 0.037
- Dark Slate Blue #483D8B ΔE 0.039
- Twilight #4E518B ΔE 0.065
- Blue With A Hint Of Purple #533CC6 ΔE 0.075
- Bluey Purple #6241C7 ΔE 0.077
- Chrysanthemum #560BAD ΔE 0.078
- Dusk #4E5481 ΔE 0.082
Use #5B3B98 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.