#5B406E
Closest named color: Dusk (#4E5481). oklch(42.1% 0.081 310.3), rgb(91, 64, 110).
Aa
White text reads best on this color (8.73:1).
About this color
#5B406E is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.081 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.059 away. White text reads best on it, at 8.73:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.081) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.40:1 |
| White text | 8.73:1 |
Values
| HEX | #5B406E |
| RGB | rgb(91, 64, 110) |
| HSL | hsl(275, 26%, 34%) |
| OKLCH | oklch(42.1% 0.081 310.3) |
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 #5B406E | 8.73:1 | AAA | Lc -94.3 | Preferred for body text |
| Black text on #5B406E | 2.40:1 | Fails | Lc 14.1 | Not readable |
| #5B406E text on white | 8.73:1 | AAA | Lc 89.8 | Fine for body text |
| #5B406E text on black | 2.40:1 | Fails | Lc -12.4 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#EDE7F1
oklch(93.6% 0.015 312.2)
-
Step 200
200
#DED5E6
oklch(88.5% 0.025 309.3)
-
Step 300
300
#CAB9D8
oklch(81% 0.047 309.8)
-
Step 400
400
#AF94C4
oklch(70.7% 0.075 310)
-
Step 500
500
#9C79B5
oklch(63.2% 0.096 310.5)
-
Step 600
600
#8661A1
oklch(55.6% 0.105 309.9)
-
Step 700
700
#72508A
oklch(49.2% 0.098 310.2)
-
Step 800
800 (this color)
#5B406E
oklch(42.1% 0.081 310.3)
-
Step 900
900
#4C385A
oklch(37.7% 0.062 310.6)
-
Step 950
950
#2C2135
oklch(27% 0.039 309.1)
#5B406E 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) | #374A70 | 0.061 |
| Deuteranopia (no green cones) | #3D4B6D | 0.056 |
| Tritanopia (no blue cones) | #594752 | 0.057 |
| Achromatopsia (no color) | #4B4B4B | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B406E
#5B406E
oklch(42.1% 0.081 310.3)
- #3E5624
#3E5624
oklch(42.1% 0.081 130.5)
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 #5B406E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.059
- Twilight #4E518B ΔE 0.061
- Dark Slate Blue #483D8B ΔE 0.061
- Dusty Grape #545775 ΔE 0.064
- Blueberry #464196 ΔE 0.075
- Brownish Purple #76424E ΔE 0.076
- Purple Brown #673A3F ΔE 0.078
- YInMn Blue #415A77 ΔE 0.079
Use #5B406E 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.