#5F3178
Closest named color: Rebecca Purple (#663399). oklch(40.6% 0.122 312.1), rgb(95, 49, 120).
Aa
White text reads best on this color (9.55:1).
About this color
#5F3178 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.122 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 0.056 away. White text reads best on it, at 9.55:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.122) |
| Temperature | in between |
| Nearest name | Rebecca Purple (#663399) |
| Black text | 2.19:1 |
| White text | 9.55:1 |
Values
| HEX | #5F3178 |
| RGB | rgb(95, 49, 120) |
| HSL | hsl(279, 42%, 33%) |
| OKLCH | oklch(40.6% 0.122 312.1) |
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 #5F3178 | 9.55:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #5F3178 | 2.19:1 | Fails | Lc 12.2 | Not readable |
| #5F3178 text on white | 9.55:1 | AAA | Lc 91.7 | Preferred for body text |
| #5F3178 text on black | 2.19:1 | Fails | Lc -10.6 | 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
#F8F4FA
oklch(97.2% 0.009 314.8)
-
Step 100
100
#EFE6F4
oklch(93.6% 0.021 313.8)
-
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
#B98BD4
oklch(70.7% 0.115 312.4)
-
Step 500
500
#A76CC9
oklch(63.1% 0.147 312.1)
-
Step 600
600
#9252B5
oklch(55.5% 0.159 312.2)
-
Step 700
700
#7C429C
oklch(49% 0.148 311.9)
-
Step 800
800 (this color)
#5F3178
oklch(40.6% 0.122 312.1)
-
Step 900
900
#523066
oklch(37.6% 0.096 311.7)
-
Step 950
950
#301D3C
oklch(27% 0.061 311.2)
#5F3178 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) | #1B437A | 0.107 |
| Deuteranopia (no green cones) | #2C4676 | 0.095 |
| Tritanopia (no blue cones) | #5C3D4F | 0.084 |
| Achromatopsia (no color) | #454545 | 0.123 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5F3178
#5F3178
oklch(40.6% 0.122 312.1)
- #315500
#315500
oklch(40.6% 0.113 132)
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 #5F3178, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Rebecca Purple #663399 ΔE 0.056
- Dark Slate Blue #483D8B ΔE 0.056
- Blueberry #464196 ΔE 0.072
- Grape Purple #5D1451 ΔE 0.082
- Purple #800080 ΔE 0.085
- Twilight #4E518B ΔE 0.085
- Rich Purple #720058 ΔE 0.087
- Indigo #4B0082 ΔE 0.092
Use #5F3178 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.