#5F3599
Closest named color: Rebecca Purple (#663399). oklch(43.5% 0.156 299.1), rgb(95, 53, 153).
Aa
White text reads best on this color (8.55:1).
About this color
#5F3599 is a dark, vivid purple. In OKLCH its lightness is 43%, its chroma 0.156 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 0.014 away. White text reads best on it, at 8.55:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | vivid (0.156) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.45:1 |
| White text | 8.55:1 |
Values
| HEX | #5F3599 |
| RGB | rgb(95, 53, 153) |
| HSL | hsl(265, 49%, 40%) |
| OKLCH | oklch(43.5% 0.156 299.1) |
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 #5F3599 | 8.55:1 | AAA | Lc -93.5 | Preferred for body text |
| Black text on #5F3599 | 2.45:1 | Fails | Lc 15.1 | Dividers and decoration only |
| #5F3599 text on white | 8.55:1 | AAA | Lc 88.9 | Fine for body text |
| #5F3599 text on black | 2.45:1 | 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
#F6F4FD
oklch(97.1% 0.012 296.4)
-
Step 100
100
#ECE6FA
oklch(93.6% 0.027 299.5)
-
Step 200
200
#DDD2F7
oklch(88.4% 0.052 298.9)
-
Step 300
300
#C8B4F4
oklch(80.9% 0.091 298.7)
-
Step 400
400
#AE8AEE
oklch(70.7% 0.146 299.2)
-
Step 500
500
#9B69E8
oklch(63.1% 0.186 299.2)
-
Step 600
600
#874CD6
oklch(55.6% 0.202 299.4)
-
Step 700
700
#723CBA
oklch(49.1% 0.188 298.9)
-
Step 800
800 (this color)
#5F3599
oklch(43.5% 0.156 299.1)
-
Step 900
900
#4C2E78
oklch(37.8% 0.122 299.2)
-
Step 950
950
#2C1C46
oklch(27% 0.076 298.8)
#5F3599 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) | #004C9C | 0.112 |
| Deuteranopia (no green cones) | #004B97 | 0.112 |
| Tritanopia (no blue cones) | #524B62 | 0.118 |
| Achromatopsia (no color) | #4C4C4C | 0.157 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F3599
#5F3599
oklch(43.5% 0.156 299.1)
- #4B5800
#4B5800
oklch(43.4% 0.102 119.1)
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 #5F3599, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.014
- Dark Slate Blue #483D8B ΔE 0.049
- Blueberry #464196 ΔE 0.049
- Chrysanthemum #560BAD ΔE 0.069
- Grape #7209B7 ΔE 0.075
- Blue With A Hint Of Purple #533CC6 ΔE 0.077
- Bluey Purple #6241C7 ΔE 0.077
- Twilight #4E518B ΔE 0.079
Use #5F3599 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.