#5F3179
Closest named color: Rebecca Purple (#663399). oklch(40.6% 0.124 311.6), rgb(95, 49, 121).
Aa
White text reads best on this color (9.53:1).
About this color
#5F3179 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.124 and its hue 312°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Rebecca Purple (#663399), ΔE 0.054 away. White text reads best on it, at 9.53:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.124) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.20:1 |
| White text | 9.53:1 |
Values
| HEX | #5F3179 |
| RGB | rgb(95, 49, 121) |
| HSL | hsl(278, 42%, 33%) |
| OKLCH | oklch(40.6% 0.124 311.6) |
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 #5F3179 | 9.53:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #5F3179 | 2.20:1 | Fails | Lc 12.3 | Not readable |
| #5F3179 text on white | 9.53:1 | AAA | Lc 91.7 | Preferred for body text |
| #5F3179 text on black | 2.20:1 | Fails | Lc -10.7 | 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
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EEE6F4
oklch(93.5% 0.021 311.1)
-
Step 200
200
#E2D2ED
oklch(88.5% 0.04 311.7)
-
Step 300
300
#D0B4E3
oklch(80.9% 0.072 311.5)
-
Step 400
400
#B88BD5
oklch(70.6% 0.116 311.5)
-
Step 500
500
#A76CCA
oklch(63.1% 0.149 311.7)
-
Step 600
600
#9252B6
oklch(55.6% 0.16 311.8)
-
Step 700
700
#7C429D
oklch(49.1% 0.149 311.5)
-
Step 800
800 (this color)
#5F3179
oklch(40.6% 0.124 311.6)
-
Step 900
900
#523066
oklch(37.6% 0.096 311.7)
-
Step 950
950
#301D3C
oklch(27% 0.061 311.2)
#5F3179 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) | #1A437B | 0.108 |
| Deuteranopia (no green cones) | #2C4677 | 0.095 |
| Tritanopia (no blue cones) | #5C3E50 | 0.085 |
| Achromatopsia (no color) | #454545 | 0.125 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F3179
#5F3179
oklch(40.6% 0.124 311.6)
- #325500
#325500
oklch(40.7% 0.112 131.5)
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 #5F3179, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.054
- Dark Slate Blue #483D8B ΔE 0.056
- Blueberry #464196 ΔE 0.071
- Grape Purple #5D1451 ΔE 0.083
- Purple #800080 ΔE 0.084
- Twilight #4E518B ΔE 0.085
- Rich Purple #720058 ΔE 0.088
- Indigo #4B0082 ΔE 0.091
Use #5F3179 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.