#5F3A91
Closest named color: Rebecca Purple (#663399). oklch(43.7% 0.139 300.3), rgb(95, 58, 145).
Aa
White text reads best on this color (8.39:1).
About this color
#5F3A91 is a dark, moderately saturated purple. In OKLCH its lightness is 44%, its chroma 0.139 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.023 away. White text reads best on it, at 8.39:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | moderately saturated (0.139) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.50:1 |
| White text | 8.39:1 |
Values
| HEX | #5F3A91 |
| RGB | rgb(95, 58, 145) |
| HSL | hsl(266, 43%, 40%) |
| OKLCH | oklch(43.7% 0.139 300.3) |
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 #5F3A91 | 8.39:1 | AAA | Lc -93.2 | Preferred for body text |
| Black text on #5F3A91 | 2.50:1 | Fails | Lc 15.4 | Dividers and decoration only |
| #5F3A91 text on white | 8.39:1 | AAA | Lc 88.6 | Fine for body text |
| #5F3A91 text on black | 2.50:1 | Fails | Lc -13.6 | 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
#ECE7F8
oklch(93.7% 0.023 299.4)
-
Step 200
200
#DDD3F3
oklch(88.5% 0.045 299.7)
-
Step 300
300
#C9B5EE
oklch(80.9% 0.082 300.6)
-
Step 400
400
#AE8DE5
oklch(70.8% 0.129 300.4)
-
Step 500
500
#9A6DDD
oklch(63% 0.166 300.2)
-
Step 600
600
#8652CB
oklch(55.6% 0.181 300.4)
-
Step 700
700
#7242AF
oklch(49.1% 0.167 300.6)
-
Step 800
800 (this color)
#5F3A91
oklch(43.7% 0.139 300.3)
-
Step 900
900
#4B3171
oklch(37.7% 0.107 300)
-
Step 950
950
#2C1D42
oklch(26.9% 0.068 300.6)
#5F3A91 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) | #0D4D94 | 0.104 |
| Deuteranopia (no green cones) | #1F4D8F | 0.096 |
| Tritanopia (no blue cones) | #554C60 | 0.105 |
| Achromatopsia (no color) | #4D4D4D | 0.140 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F3A91
#5F3A91
oklch(43.7% 0.139 300.3)
- #4A5900
#4A5900
oklch(43.6% 0.104 120.3)
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 #5F3A91, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.023
- Dark Slate Blue #483D8B ΔE 0.042
- Blueberry #464196 ΔE 0.045
- Twilight #4E518B ΔE 0.065
- Dusk #4E5481 ΔE 0.080
- Chrysanthemum #560BAD ΔE 0.086
- Bluey Purple #6241C7 ΔE 0.087
- Blue With A Hint Of Purple #533CC6 ΔE 0.088
Use #5F3A91 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.