#5B339B
Closest named color: Rebecca Purple (#663399). oklch(42.9% 0.161 296.7), rgb(91, 51, 155).
Aa
White text reads best on this color (8.78:1).
About this color
#5B339B is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.161 and its hue 297°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.022 away. White text reads best on it, at 8.78:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.161) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.39:1 |
| White text | 8.78:1 |
Values
| HEX | #5B339B |
| RGB | rgb(91, 51, 155) |
| HSL | hsl(263, 50%, 40%) |
| OKLCH | oklch(42.9% 0.161 296.7) |
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 #5B339B | 8.78:1 | AAA | Lc -94.0 | Preferred for body text |
| Black text on #5B339B | 2.39:1 | Fails | Lc 14.5 | Not readable |
| #5B339B text on white | 8.78:1 | AAA | Lc 89.5 | Fine for body text |
| #5B339B text on black | 2.39:1 | Fails | Lc -12.7 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#EBE6FA
oklch(93.5% 0.027 297.3)
-
Step 200
200
#DCD3F8
oklch(88.6% 0.051 296.5)
-
Step 300
300
#C6B4F7
oklch(80.8% 0.095 296.5)
-
Step 400
400
#AB8AF2
oklch(70.6% 0.151 297)
-
Step 500
500
#9769EE
oklch(63.1% 0.193 296.4)
-
Step 600
600
#834CDC
oklch(55.6% 0.209 296.5)
-
Step 700
700
#6F3BBF
oklch(49% 0.195 296.6)
-
Step 800
800 (this color)
#5B339B
oklch(42.9% 0.161 296.7)
-
Step 900
900
#4A2E7B
oklch(37.8% 0.125 296.7)
-
Step 950
950
#2B1C48
oklch(27.1% 0.079 296.5)
#5B339B 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) | #004B9E | 0.107 |
| Deuteranopia (no green cones) | #004999 | 0.107 |
| Tritanopia (no blue cones) | #4B4B62 | 0.124 |
| Achromatopsia (no color) | #4B4B4B | 0.162 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B339B
#5B339B
oklch(42.9% 0.161 296.7)
- #4D5600
#4D5600
oklch(43% 0.099 116.5)
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 #5B339B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.022
- Blueberry #464196 ΔE 0.046
- Dark Slate Blue #483D8B ΔE 0.047
- Chrysanthemum #560BAD ΔE 0.061
- Imperial Purple #480CA8 ΔE 0.073
- Blue With A Hint Of Purple #533CC6 ΔE 0.073
- Grape #7209B7 ΔE 0.074
- Bluey Purple #6241C7 ΔE 0.077
Use #5B339B 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.