#57517C
Closest named color: Dusk (#4E5481). oklch(45.9% 0.069 289.8), rgb(87, 81, 124).
Aa
White text reads best on this color (7.30:1).
About this color
#57517C is a medium-dark, muted purple. In OKLCH its lightness is 46%, its chroma 0.069 and its hue 290°. Its hue sits on the cool side of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.016 away. White text reads best on it, at 7.30:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | muted (0.069) |
| Temperature | cool |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.87:1 |
| White text | 7.30:1 |
Values
| HEX | #57517C |
| RGB | rgb(87, 81, 124) |
| HSL | hsl(248, 21%, 40%) |
| OKLCH | oklch(45.9% 0.069 289.8) |
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 #57517C | 7.30:1 | AAA | Lc -90.2 | Preferred for body text |
| Black text on #57517C | 2.87:1 | Fails | Lc 18.7 | Dividers and decoration only |
| #57517C text on white | 7.30:1 | AAA | Lc 85.4 | Fine for body text |
| #57517C text on black | 2.87:1 | Fails | Lc -16.7 | 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
#F5F5F8
oklch(97.1% 0.004 286.3)
-
Step 100
100
#E9E9F0
oklch(93.6% 0.009 286.2)
-
Step 200
200
#D8D7E5
oklch(88.4% 0.019 289.3)
-
Step 300
300
#C0BDD5
oklch(80.8% 0.034 291.4)
-
Step 400
400
#9F9BC0
oklch(70.6% 0.054 289.9)
-
Step 500
500
#8883B1
oklch(63.1% 0.069 289.3)
-
Step 600
600
#726C9C
oklch(55.6% 0.074 289.5)
-
Step 700
700 (this color)
#57517C
oklch(45.9% 0.069 289.8)
-
Step 800
800
#4E4A6D
oklch(42.8% 0.057 289)
-
Step 900
900
#413E58
oklch(37.8% 0.044 289.4)
-
Step 950
950
#262434
oklch(27% 0.03 290)
#57517C 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) | #45577E | 0.030 |
| Deuteranopia (no green cones) | #45557B | 0.028 |
| Tritanopia (no blue cones) | #4F5961 | 0.059 |
| Achromatopsia (no color) | #565656 | 0.070 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57517C
#57517C
oklch(45.9% 0.069 289.8)
- #5A5B2B
#5A5B2B
oklch(45.9% 0.069 109.9)
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 #57517C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.016
- Dusty Grape #545775 ΔE 0.024
- Twilight #4E518B ΔE 0.028
- YInMn Blue #415A77 ΔE 0.042
- Dusky Blue #475F94 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.052
- Light Navy Blue #2E5A88 ΔE 0.056
- Denim #3B638C ΔE 0.059
Use #57517C 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.