#57518B
Closest named color: Twilight (#4E518B). oklch(46.7% 0.092 287), rgb(87, 81, 139).
Aa
White text reads best on this color (7.10:1).
About this color
#57518B is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.092 and its hue 287°. Its hue sits on the cool side of the wheel. The nearest named color is Twilight (#4E518B), ΔE 0.014 away. White text reads best on it, at 7.10:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.092) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.95:1 |
| White text | 7.10:1 |
Values
| HEX | #57518B |
| RGB | rgb(87, 81, 139) |
| HSL | hsl(246, 26%, 43%) |
| OKLCH | oklch(46.7% 0.092 287) |
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 #57518B | 7.10:1 | AAA | Lc -89.5 | Fine for body text |
| Black text on #57518B | 2.95:1 | Fails | Lc 19.5 | Dividers and decoration only |
| #57518B text on white | 7.10:1 | AAA | Lc 84.6 | Fine for body text |
| #57518B text on black | 2.95:1 | Fails | Lc -17.4 | 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
#F5F5F9
oklch(97.1% 0.005 286.3)
-
Step 100
100
#E9E9F2
oklch(93.7% 0.012 286.2)
-
Step 200
200
#D7D7E9
oklch(88.5% 0.025 285.9)
-
Step 300
300
#BEBDDD
oklch(81% 0.045 286.8)
-
Step 400
400
#9D9ACC
oklch(70.7% 0.073 287.1)
-
Step 500
500
#8681BE
oklch(63.2% 0.091 287.2)
-
Step 600
600
#706AAA
oklch(55.7% 0.098 287.1)
-
Step 700
700 (this color)
#57518B
oklch(46.7% 0.092 287)
-
Step 800
800
#4C4877
oklch(42.7% 0.077 286.6)
-
Step 900
900
#3F3C60
oklch(37.6% 0.061 286.9)
-
Step 950
950
#252438
oklch(27.1% 0.037 286)
#57518B 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) | #3E5A8D | 0.040 |
| Deuteranopia (no green cones) | #3D578A | 0.039 |
| Tritanopia (no blue cones) | #495C67 | 0.079 |
| Achromatopsia (no color) | #585858 | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57518B
#57518B
oklch(46.7% 0.092 287)
- #605D11
#605D11
oklch(46.7% 0.093 107.1)
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 #57518B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Twilight #4E518B ΔE 0.014
- Dusk #4E5481 ΔE 0.024
- Dusky Blue #475F94 ΔE 0.042
- Denim Blue #3B5B92 ΔE 0.044
- Dusty Grape #545775 ΔE 0.045
- YInMn Blue #415A77 ΔE 0.056
- Light Navy Blue #2E5A88 ΔE 0.057
- Blueberry #464196 ΔE 0.059
Use #57518B 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.