#5B31A6
Closest named color: Rebecca Purple (#663399). oklch(43.5% 0.177 294.3), rgb(91, 49, 166).
Aa
White text reads best on this color (8.62:1).
About this color
#5B31A6 is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.177 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 0.032 away. White text reads best on it, at 8.62:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.177) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.43:1 |
| White text | 8.62:1 |
Values
| HEX | #5B31A6 |
| RGB | rgb(91, 49, 166) |
| HSL | hsl(262, 54%, 42%) |
| OKLCH | oklch(43.5% 0.177 294.3) |
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 #5B31A6 | 8.62:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #5B31A6 | 2.43:1 | Fails | Lc 15.0 | Dividers and decoration only |
| #5B31A6 text on white | 8.62:1 | AAA | Lc 89.0 | Fine for body text |
| #5B31A6 text on black | 2.43:1 | Fails | Lc -13.3 | 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
#F6F4FE
oklch(97.2% 0.013 295.3)
-
Step 100
100
#EBE6FC
oklch(93.5% 0.03 296.2)
-
Step 200
200
#DBD2FC
oklch(88.4% 0.058 295)
-
Step 300
300
#C4B4FD
oklch(80.9% 0.103 294)
-
Step 400
400
#A889FC
oklch(70.7% 0.165 294.2)
-
Step 500
500
#9565F9
oklch(63% 0.211 294.5)
-
Step 600
600
#8146E8
oklch(55.6% 0.229 294.4)
-
Step 700
700
#6D35CA
oklch(49% 0.214 294.2)
-
Step 800
800 (this color)
#5B31A6
oklch(43.5% 0.177 294.3)
-
Step 900
900
#482C81
oklch(37.7% 0.136 294)
-
Step 950
950
#2A1B4C
oklch(27.1% 0.087 293.9)
#5B31A6 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) | #004DA9 | 0.107 |
| Deuteranopia (no green cones) | #004AA4 | 0.106 |
| Tritanopia (no blue cones) | #464E68 | 0.137 |
| Achromatopsia (no color) | #4C4C4C | 0.178 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B31A6
#5B31A6
oklch(43.5% 0.177 294.3)
- #515700
#515700
oklch(43.6% 0.098 114.3)
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 #5B31A6, closest first.
No curated palette has a color within ΔE 0.04 of #5B31A6.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.032
- Chrysanthemum #560BAD ΔE 0.050
- Blueberry #464196 ΔE 0.054
- Blue With A Hint Of Purple #533CC6 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.060
- Grape #7209B7 ΔE 0.063
- Bluey Purple #6241C7 ΔE 0.063
- Blurple #5539CC ΔE 0.064
Use #5B31A6 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.