#5B3AA1
Closest named color: Rebecca Purple (#663399). oklch(44.4% 0.159 293.7), rgb(91, 58, 161).
Aa
White text reads best on this color (8.18:1).
About this color
#5B3AA1 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.159 and its hue 294°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.027 away. White text reads best on it, at 8.18:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.159) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.56:1 |
| White text | 8.18:1 |
Values
| HEX | #5B3AA1 |
| RGB | rgb(91, 58, 161) |
| HSL | hsl(259, 47%, 43%) |
| OKLCH | oklch(44.4% 0.159 293.7) |
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 #5B3AA1 | 8.18:1 | AAA | Lc -92.5 | Preferred for body text |
| Black text on #5B3AA1 | 2.56:1 | Fails | Lc 16.1 | Dividers and decoration only |
| #5B3AA1 text on white | 8.18:1 | AAA | Lc 87.9 | Fine for body text |
| #5B3AA1 text on black | 2.56:1 | Fails | Lc -14.3 | 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
#EAE7FB
oklch(93.6% 0.027 292.8)
-
Step 200
200
#DAD3F9
oklch(88.4% 0.052 293.7)
-
Step 300
300
#C3B6F7
oklch(81% 0.092 293.4)
-
Step 400
400
#A68CF3
oklch(70.6% 0.148 293.9)
-
Step 500
500
#926CEF
oklch(63.2% 0.189 293.6)
-
Step 600
600
#7E4FDD
oklch(55.6% 0.206 293.9)
-
Step 700
700
#6A3EC0
oklch(49% 0.192 293.6)
-
Step 800
800 (this color)
#5B3AA1
oklch(44.4% 0.159 293.7)
-
Step 900
900
#472F7C
oklch(37.7% 0.125 293.9)
-
Step 950
950
#291D48
oklch(27% 0.077 293.4)
#5B3AA1 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) | #0050A4 | 0.100 |
| Deuteranopia (no green cones) | #004D9F | 0.100 |
| Tritanopia (no blue cones) | #485268 | 0.126 |
| Achromatopsia (no color) | #4F4F4F | 0.160 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B3AA1
#5B3AA1
oklch(44.4% 0.159 293.7)
- #545900
#545900
oklch(44.4% 0.099 113.5)
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 #5B3AA1, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.027
- Blueberry #464196 ΔE 0.042
- Dark Slate Blue #483D8B ΔE 0.049
- Blue With A Hint Of Purple #533CC6 ΔE 0.061
- Bluey Purple #6241C7 ΔE 0.063
- Blurple #5539CC ΔE 0.070
- Chrysanthemum #560BAD ΔE 0.070
- Twilight #4E518B ΔE 0.073
Use #5B3AA1 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.