#5B519F
Closest named color: Twilight (#4E518B). oklch(48.3% 0.122 286.8), rgb(91, 81, 159).
Aa
White text reads best on this color (6.72:1).
About this color
#5B519F is a medium-dark, moderately saturated purple. In OKLCH its lightness is 48%, its chroma 0.122 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.039 away. White text reads best on it, at 6.72:1.
| Hue family | Purples |
| Lightness | medium-dark (48%) |
| Chroma | moderately saturated (0.122) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.12:1 |
| White text | 6.72:1 |
Values
| HEX | #5B519F |
| RGB | rgb(91, 81, 159) |
| HSL | hsl(248, 33%, 47%) |
| OKLCH | oklch(48.3% 0.122 286.8) |
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 #5B519F | 6.72:1 | AA | Lc -88.0 | Fine for body text |
| Black text on #5B519F | 3.12:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #5B519F text on white | 6.72:1 | AA | Lc 83.0 | Fine for body text |
| #5B519F text on black | 3.12:1 | AA large text | Lc -18.9 | Dividers and decoration only |
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 700.
-
Step 50
50
#F5F5FB
oklch(97.2% 0.008 286.3)
-
Step 100
100
#E9E8F5
oklch(93.6% 0.017 289.6)
-
Step 200
200
#D7D6EE
oklch(88.4% 0.033 287.6)
-
Step 300
300
#BDBCE6
oklch(81% 0.059 286.1)
-
Step 400
400
#9C98D9
oklch(70.8% 0.094 286.5)
-
Step 500
500
#857DCE
oklch(63.1% 0.12 287)
-
Step 600
600
#6F65BB
oklch(55.6% 0.13 286.7)
-
Step 700
700 (this color)
#5B519F
oklch(48.3% 0.122 286.8)
-
Step 800
800
#4C4583
oklch(42.8% 0.1 286.5)
-
Step 900
900
#3F3A69
oklch(37.7% 0.079 286.8)
-
Step 950
950
#25223D
oklch(26.9% 0.05 287.7)
#5B519F 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) | #325EA2 | 0.058 |
| Deuteranopia (no green cones) | #315A9D | 0.057 |
| Tritanopia (no blue cones) | #476170 | 0.103 |
| Achromatopsia (no color) | #5C5C5C | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B519F
#5B519F
oklch(48.3% 0.122 286.8)
- #666200
#666200
oklch(48.4% 0.104 106.9)
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 #5B519F, closest first.
No curated palette has a color within ΔE 0.04 of #5B519F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.039
- Dusky Blue #475F94 ΔE 0.052
- Dusk #4E5481 ΔE 0.056
- Denim Blue #3B5B92 ΔE 0.056
- Blueberry #464196 ΔE 0.057
- Iris #6258C4 ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.069
- Rebecca Purple #663399 ΔE 0.070
Use #5B519F 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.