#5B3CA8
Closest named color: Rebecca Purple (#663399). oklch(45.3% 0.165 291.7), rgb(91, 60, 168).
Aa
White text reads best on this color (7.90:1).
About this color
#5B3CA8 is a medium-dark, vivid purple. In OKLCH its lightness is 45%, its chroma 0.165 and its hue 292°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.036 away. White text reads best on it, at 7.90:1.
| Hue family | Purples |
| Lightness | medium-dark (45%) |
| Chroma | vivid (0.165) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.65:1 |
| White text | 7.90:1 |
Values
| HEX | #5B3CA8 |
| RGB | rgb(91, 60, 168) |
| HSL | hsl(257, 47%, 45%) |
| OKLCH | oklch(45.3% 0.165 291.7) |
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 #5B3CA8 | 7.90:1 | AAA | Lc -91.7 | Preferred for body text |
| Black text on #5B3CA8 | 2.65:1 | Fails | Lc 17.1 | Dividers and decoration only |
| #5B3CA8 text on white | 7.90:1 | AAA | Lc 87.0 | Fine for body text |
| #5B3CA8 text on black | 2.65:1 | Fails | Lc -15.1 | Dividers and decoration only |
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
#F5F4FE
oklch(97.1% 0.013 290.8)
-
Step 100
100
#EAE7FC
oklch(93.7% 0.028 292.4)
-
Step 200
200
#D9D3FA
oklch(88.4% 0.054 292.3)
-
Step 300
300
#C1B6FA
oklch(80.9% 0.095 291.5)
-
Step 400
400
#A38CF8
oklch(70.6% 0.155 291.7)
-
Step 500
500
#8F6BF4
oklch(63.1% 0.197 291.9)
-
Step 600
600
#7B4EE3
oklch(55.6% 0.214 291.8)
-
Step 700
700
#683DC5
oklch(49.1% 0.199 291.9)
-
Step 800
800 (this color)
#5B3CA8
oklch(45.3% 0.165 291.7)
-
Step 900
900
#452F7F
oklch(37.7% 0.129 291.7)
-
Step 950
950
#281D4A
oklch(27.1% 0.08 291.4)
#5B3CA8 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) | #0053AB | 0.098 |
| Deuteranopia (no green cones) | #004FA6 | 0.097 |
| Tritanopia (no blue cones) | #44556C | 0.132 |
| Achromatopsia (no color) | #515151 | 0.166 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3CA8
#5B3CA8
oklch(45.3% 0.165 291.7)
- #585B00
#585B00
oklch(45.3% 0.1 112)
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 #5B3CA8, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.036
- Blueberry #464196 ΔE 0.046
- Blue With A Hint Of Purple #533CC6 ΔE 0.050
- Bluey Purple #6241C7 ΔE 0.052
- Dark Slate Blue #483D8B ΔE 0.057
- Blurple #5539CC ΔE 0.059
- Chrysanthemum #560BAD ΔE 0.071
- Majorelle Blue #3F37C9 ΔE 0.072
Use #5B3CA8 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.