#57507E
Closest named color: Dusk (#4E5481). oklch(45.8% 0.074 290.1), rgb(87, 80, 126).
Aa
White text reads best on this color (7.35:1).
About this color
#57507E is a medium-dark, moderately saturated purple. In OKLCH its lightness is 46%, its chroma 0.074 and its hue 290°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dusk (#4E5481), ΔE 0.017 away. White text reads best on it, at 7.35:1.
| Hue family | Purples |
| Lightness | medium-dark (46%) |
| Chroma | moderately saturated (0.074) |
| Temperature | in between |
| Nearest name | Dusk (#4E5481) |
| Black text | 2.85:1 |
| White text | 7.35:1 |
Values
| HEX | #57507E |
| RGB | rgb(87, 80, 126) |
| HSL | hsl(249, 22%, 40%) |
| OKLCH | oklch(45.8% 0.074 290.1) |
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 #57507E | 7.35:1 | AAA | Lc -90.4 | Preferred for body text |
| Black text on #57507E | 2.85:1 | Fails | Lc 18.5 | Dividers and decoration only |
| #57507E text on white | 7.35:1 | AAA | Lc 85.5 | Fine for body text |
| #57507E text on black | 2.85:1 | Fails | Lc -16.5 | 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 800.
-
Step 50
50
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D8D7E8
oklch(88.5% 0.023 288.6)
-
Step 300
300
#C0BCDB
oklch(80.8% 0.043 291.3)
-
Step 400
400
#A09AC9
oklch(70.8% 0.068 290.4)
-
Step 500
500
#8980BC
oklch(63.1% 0.089 290.5)
-
Step 600
600
#7369A8
oklch(55.7% 0.097 290.2)
-
Step 700
700
#605790
oklch(49.1% 0.09 289.9)
-
Step 800
800 (this color)
#57507E
oklch(45.8% 0.074 290.1)
-
Step 900
900
#413C5E
oklch(37.7% 0.058 290.1)
-
Step 950
950
#262337
oklch(26.9% 0.037 290.6)
#57507E 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) | #435780 | 0.033 |
| Deuteranopia (no green cones) | #43557D | 0.032 |
| Tritanopia (no blue cones) | #4E5861 | 0.062 |
| Achromatopsia (no color) | #565656 | 0.074 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57507E
#57507E
oklch(45.8% 0.074 290.1)
- #5A5B26
#5A5B26
oklch(45.8% 0.074 110)
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 #57507E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusk #4E5481 ΔE 0.017
- Twilight #4E518B ΔE 0.025
- Dusty Grape #545775 ΔE 0.029
- YInMn Blue #415A77 ΔE 0.045
- Dusky Blue #475F94 ΔE 0.051
- Denim Blue #3B5B92 ΔE 0.051
- Light Navy Blue #2E5A88 ΔE 0.057
- Denim #3B638C ΔE 0.061
Use #57507E 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.