#5B4271
Closest named color: Dusk (#4E5481). oklch(42.7% 0.081 307.8), rgb(91, 66, 113).
Aa
White text reads best on this color (8.52:1).
About this color
#5B4271 is a dark, moderately saturated purple. In OKLCH its lightness is 43%, its chroma 0.081 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.053 away. White text reads best on it, at 8.52:1.
| Hue family | Purples |
| Lightness | dark (43%) |
| Chroma | moderately saturated (0.081) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.46:1 |
| White text | 8.52:1 |
Values
| HEX | #5B4271 |
| RGB | rgb(91, 66, 113) |
| HSL | hsl(272, 26%, 35%) |
| OKLCH | oklch(42.7% 0.081 307.8) |
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 #5B4271 | 8.52:1 | AAA | Lc -93.8 | Preferred for body text |
| Black text on #5B4271 | 2.46:1 | Fails | Lc 14.7 | Not readable |
| #5B4271 text on white | 8.52:1 | AAA | Lc 89.2 | Fine for body text |
| #5B4271 text on black | 2.46:1 | Fails | Lc -13.0 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE8F1
oklch(93.7% 0.013 306)
-
Step 200
200
#DED5E7
oklch(88.6% 0.026 308.1)
-
Step 300
300
#C9B9D9
oklch(80.9% 0.048 307.8)
-
Step 400
400
#AD94C6
oklch(70.6% 0.077 307.3)
-
Step 500
500
#9979B7
oklch(63% 0.097 307.4)
-
Step 600
600
#8462A3
oklch(55.7% 0.105 307.4)
-
Step 700
700
#70508B
oklch(49% 0.098 308.1)
-
Step 800
800 (this color)
#5B4271
oklch(42.7% 0.081 307.8)
-
Step 900
900
#4B385B
oklch(37.7% 0.063 308.5)
-
Step 950
950
#2C2136
oklch(27% 0.041 307.8)
#5B4271 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) | #384B73 | 0.058 |
| Deuteranopia (no green cones) | #3E4D70 | 0.054 |
| Tritanopia (no blue cones) | #584954 | 0.059 |
| Achromatopsia (no color) | #4C4C4C | 0.082 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #5B4271
#5B4271
oklch(42.7% 0.081 307.8)
- #425723
#425723
oklch(42.7% 0.081 127.8)
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 #5B4271, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.053
- Twilight #4E518B ΔE 0.055
- Dark Slate Blue #483D8B ΔE 0.059
- Dusty Grape #545775 ΔE 0.059
- Blueberry #464196 ΔE 0.072
- YInMn Blue #415A77 ΔE 0.075
- Brownish Purple #76424E ΔE 0.077
- Rebecca Purple #663399 ΔE 0.081
Use #5B4271 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.