#5B539E
Closest named color: Twilight (#4E518B). oklch(48.6% 0.117 286), rgb(91, 83, 158).
Aa
White text reads best on this color (6.61:1).
About this color
#5B539E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.117 and its hue 286°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.037 away. White text reads best on it, at 6.61:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.117) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 3.17:1 |
| White text | 6.61:1 |
Values
| HEX | #5B539E |
| RGB | rgb(91, 83, 158) |
| HSL | hsl(246, 31%, 47%) |
| OKLCH | oklch(48.6% 0.117 286) |
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 #5B539E | 6.61:1 | AA | Lc -87.6 | Fine for body text |
| Black text on #5B539E | 3.17:1 | AA large text | Lc 21.5 | Dividers and decoration only |
| #5B539E text on white | 6.61:1 | AA | Lc 82.6 | Fine for body text |
| #5B539E text on black | 3.17:1 | AA large text | Lc -19.4 | 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
#F5F5FA
oklch(97.2% 0.007 286.3)
-
Step 100
100
#E8E8F5
oklch(93.5% 0.017 286.1)
-
Step 200
200
#D7D7EE
oklch(88.6% 0.031 285.7)
-
Step 300
300
#BDBCE4
oklch(80.9% 0.056 286.2)
-
Step 400
400
#9B98D7
oklch(70.6% 0.091 286)
-
Step 500
500
#847ECC
oklch(63.1% 0.116 286.1)
-
Step 600
600
#6E66B9
oklch(55.6% 0.126 285.9)
-
Step 700
700 (this color)
#5B539E
oklch(48.6% 0.117 286)
-
Step 800
800
#4B4581
oklch(42.6% 0.097 286.1)
-
Step 900
900
#3F3B68
oklch(37.8% 0.076 286.3)
-
Step 950
950
#25233D
oklch(27.2% 0.048 286.3)
#5B539E 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) | #365FA1 | 0.054 |
| Deuteranopia (no green cones) | #345B9C | 0.053 |
| Tritanopia (no blue cones) | #476271 | 0.099 |
| Achromatopsia (no color) | #5D5D5D | 0.118 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B539E
#5B539E
oklch(48.6% 0.117 286)
- #686200
#686200
oklch(48.6% 0.103 105.5)
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 #5B539E, closest first.
No curated palette has a color within ΔE 0.04 of #5B539E.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.037
- Dusky Blue #475F94 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.053
- Dusk #4E5481 ΔE 0.053
- Iris #6258C4 ΔE 0.061
- Blueberry #464196 ΔE 0.061
- French Blue #436BAD ΔE 0.068
- Denim #3B638C ΔE 0.070
Use #5B539E 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.