#57517E
Closest named color: Dusk (#4E5481). oklch(46% 0.072 289.3), rgb(87, 81, 126).
Aa
White text reads best on this color (7.28:1).
About this color
#57517E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.072 and its hue 289°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.015 away. White text reads best on it, at 7.28:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.072) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.88:1 |
| White text | 7.28:1 |
Values
| HEX | #57517E |
| RGB | rgb(87, 81, 126) |
| HSL | hsl(248, 22%, 41%) |
| OKLCH | oklch(46% 0.072 289.3) |
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 #57517E | 7.28:1 | AAA | Lc -90.1 | Preferred for body text |
| Black text on #57517E | 2.88:1 | Fails | Lc 18.8 | Dividers and decoration only |
| #57517E text on white | 7.28:1 | AAA | Lc 85.3 | Fine for body text |
| #57517E text on black | 2.88:1 | Fails | Lc -16.8 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D8D7E6
oklch(88.4% 0.02 289)
-
Step 300
300
#BFBDD6
oklch(80.8% 0.035 289.3)
-
Step 400
400
#9F9BC2
oklch(70.6% 0.057 289.6)
-
Step 500
500
#8882B3
oklch(63% 0.073 289.7)
-
Step 600
600
#726C9E
oklch(55.7% 0.077 289.1)
-
Step 700
700 (this color)
#57517E
oklch(46% 0.072 289.3)
-
Step 800
800
#4E496E
oklch(42.6% 0.061 289.8)
-
Step 900
900
#413D59
oklch(37.6% 0.048 290.5)
-
Step 950
950
#262434
oklch(27% 0.03 290)
#57517E 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) | #445780 | 0.031 |
| Deuteranopia (no green cones) | #44557D | 0.030 |
| Tritanopia (no blue cones) | #4E5961 | 0.062 |
| Achromatopsia (no color) | #565656 | 0.073 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57517E
#57517E
oklch(46% 0.072 289.3)
- #5B5B28
#5B5B28
oklch(45.9% 0.072 108.9)
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 #57517E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.015
- Twilight #4E518B ΔE 0.025
- Dusty Grape #545775 ΔE 0.026
- YInMn Blue #415A77 ΔE 0.043
- Dusky Blue #475F94 ΔE 0.049
- Denim Blue #3B5B92 ΔE 0.050
- Light Navy Blue #2E5A88 ΔE 0.055
- Denim #3B638C ΔE 0.059
Use #57517E 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.