#5B508D
Closest named color: Twilight (#4E518B). oklch(47% 0.097 290.4), rgb(91, 80, 141).
Aa
White text reads best on this color (7.05:1).
About this color
#5B508D is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.097 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 7.05:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.097) |
| Temperature | in between |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.97:1 |
| White text | 7.05:1 |
Values
| HEX | #5B508D |
| RGB | rgb(91, 80, 141) |
| HSL | hsl(251, 28%, 43%) |
| OKLCH | oklch(47% 0.097 290.4) |
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 #5B508D | 7.05:1 | AAA | Lc -89.3 | Fine for body text |
| Black text on #5B508D | 2.97:1 | Fails | Lc 19.7 | Dividers and decoration only |
| #5B508D text on white | 7.05:1 | AAA | Lc 84.4 | Fine for body text |
| #5B508D text on black | 2.97:1 | Fails | Lc -17.6 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
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
#C0BCDD
oklch(80.9% 0.046 290.9)
-
Step 400
400
#A099CD
oklch(70.8% 0.075 290.5)
-
Step 500
500
#897FBF
oklch(63.1% 0.095 290.6)
-
Step 600
600
#7368AC
oklch(55.7% 0.104 290)
-
Step 700
700 (this color)
#5B508D
oklch(47% 0.097 290.4)
-
Step 800
800
#4F4678
oklch(42.6% 0.082 290.8)
-
Step 900
900
#413B60
oklch(37.5% 0.063 290.5)
-
Step 950
950
#262338
oklch(27% 0.039 290.1)
#5B508D 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) | #3C5A8F | 0.048 |
| Deuteranopia (no green cones) | #3D578C | 0.045 |
| Tritanopia (no blue cones) | #4F5B67 | 0.081 |
| Achromatopsia (no color) | #595959 | 0.097 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B508D
#5B508D
oklch(47% 0.097 290.4)
- #5E5F0E
#5E5F0E
oklch(47% 0.097 110.4)
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 #5B508D, 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 0.032
- Dusky Blue #475F94 ΔE 0.047
- Denim Blue #3B5B92 ΔE 0.050
- Dusty Grape #545775 ΔE 0.050
- Blueberry #464196 ΔE 0.059
- Dark Slate Blue #483D8B ΔE 0.063
- YInMn Blue #415A77 ΔE 0.064
Use #5B508D 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.