#5B3392
Closest named color: Rebecca Purple (#663399). oklch(42.2% 0.15 299.2), rgb(91, 51, 146).
Aa
White text reads best on this color (8.99:1).
About this color
#5B3392 is a dark, vivid purple. In OKLCH its lightness is 42%, its chroma 0.150 and its hue 299°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.024 away. White text reads best on it, at 8.99:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | vivid (0.150) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.33:1 |
| White text | 8.99:1 |
Values
| HEX | #5B3392 |
| RGB | rgb(91, 51, 146) |
| HSL | hsl(265, 48%, 39%) |
| OKLCH | oklch(42.2% 0.15 299.2) |
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 #5B3392 | 8.99:1 | AAA | Lc -94.6 | Preferred for body text |
| Black text on #5B3392 | 2.33:1 | Fails | Lc 13.8 | Not readable |
| #5B3392 text on white | 8.99:1 | AAA | Lc 90.2 | Preferred for body text |
| #5B3392 text on black | 2.33:1 | Fails | Lc -12.1 | 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 800.
-
Step 50
50
#F6F4FC
oklch(97.1% 0.011 297.6)
-
Step 100
100
#ECE6F9
oklch(93.5% 0.026 300.3)
-
Step 200
200
#DDD3F5
oklch(88.5% 0.047 298.9)
-
Step 300
300
#C8B4F2
oklch(80.8% 0.089 299.2)
-
Step 400
400
#AD8BEB
oklch(70.6% 0.14 299.1)
-
Step 500
500
#9A6BE5
oklch(63.1% 0.179 299)
-
Step 600
600
#864FD2
oklch(55.6% 0.194 299.4)
-
Step 700
700
#723EB6
oklch(49.1% 0.181 299.6)
-
Step 800
800 (this color)
#5B3392
oklch(42.2% 0.15 299.2)
-
Step 900
900
#4B2F76
oklch(37.7% 0.117 298.8)
-
Step 950
950
#2C1C45
oklch(26.9% 0.075 299.4)
#5B3392 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) | #004995 | 0.108 |
| Deuteranopia (no green cones) | #054890 | 0.107 |
| Tritanopia (no blue cones) | #4F485E | 0.113 |
| Achromatopsia (no color) | #494949 | 0.151 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3392
#5B3392
oklch(42.2% 0.15 299.2)
- #485500
#485500
oklch(42.3% 0.1 119.4)
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 #5B3392, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.024
- Dark Slate Blue #483D8B ΔE 0.041
- Blueberry #464196 ΔE 0.046
- Chrysanthemum #560BAD ΔE 0.070
- Twilight #4E518B ΔE 0.079
- Imperial Purple #480CA8 ΔE 0.079
- Grape #7209B7 ΔE 0.084
- Blue With A Hint Of Purple #533CC6 ΔE 0.087
Use #5B3392 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.