#5B508E
Closest named color: Twilight (#4E518B). oklch(47.1% 0.098 290.2), rgb(91, 80, 142).
Aa
White text reads best on this color (7.04:1).
About this color
#5B508E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.098 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.021 away. White text reads best on it, at 7.04:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.098) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.98:1 |
| White text | 7.04:1 |
Values
| HEX | #5B508E |
| RGB | rgb(91, 80, 142) |
| HSL | hsl(251, 28%, 44%) |
| OKLCH | oklch(47.1% 0.098 290.2) |
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 #5B508E | 7.04:1 | AAA | Lc -89.2 | Fine for body text |
| Black text on #5B508E | 2.98:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #5B508E text on white | 7.04:1 | AAA | Lc 84.3 | Fine for body text |
| #5B508E text on black | 2.98:1 | Fails | Lc -17.7 | 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
#E9E8F3
oklch(93.5% 0.015 290.3)
-
Step 200
200
#D8D7EA
oklch(88.6% 0.026 288.3)
-
Step 300
300
#C0BCDE
oklch(80.9% 0.048 290.7)
-
Step 400
400
#A099CD
oklch(70.8% 0.075 290.5)
-
Step 500
500
#897FC0
oklch(63.1% 0.097 290.4)
-
Step 600
600
#7367AD
oklch(55.5% 0.107 290.3)
-
Step 700
700 (this color)
#5B508E
oklch(47.1% 0.098 290.2)
-
Step 800
800
#4F4678
oklch(42.6% 0.082 290.8)
-
Step 900
900
#413B61
oklch(37.6% 0.064 290.2)
-
Step 950
950
#262339
oklch(27% 0.04 289.7)
#5B508E 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) | #3C5A90 | 0.048 |
| Deuteranopia (no green cones) | #3C578C | 0.047 |
| Tritanopia (no blue cones) | #4E5C68 | 0.083 |
| Achromatopsia (no color) | #595959 | 0.099 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B508E
#5B508E
oklch(47.1% 0.098 290.2)
- #5F5F0B
#5F5F0B
oklch(47% 0.098 109.6)
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 #5B508E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.021
- Dusk #4E5481 ΔE 0.033
- Dusky Blue #475F94 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.050
- Dusty Grape #545775 ΔE 0.052
- Blueberry #464196 ΔE 0.058
- Dark Slate Blue #483D8B ΔE 0.063
- Light Navy Blue #2E5A88 ΔE 0.064
Use #5B508E 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.