#57508C
Closest named color: Twilight (#4E518B). oklch(46.6% 0.096 287.4), rgb(87, 80, 140).
Aa
White text reads best on this color (7.16:1).
About this color
#57508C is a medium-dark, moderately saturated purple. In OKLCH its lightness is 47%, its chroma 0.096 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 7.16:1.
| Hue family | Purples |
| Lightness | medium-dark (47%) |
| Chroma | moderately saturated (0.096) |
| Temperature | cool |
| Nearest name | Twilight (#4E518B) |
| Black text | 2.93:1 |
| White text | 7.16:1 |
Values
| HEX | #57508C |
| RGB | rgb(87, 80, 140) |
| HSL | hsl(247, 27%, 43%) |
| OKLCH | oklch(46.6% 0.096 287.4) |
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 #57508C | 7.16:1 | AAA | Lc -89.7 | Fine for body text |
| Black text on #57508C | 2.93:1 | Fails | Lc 19.3 | Dividers and decoration only |
| #57508C text on white | 7.16:1 | AAA | Lc 84.8 | Fine for body text |
| #57508C text on black | 2.93:1 | Fails | Lc -17.2 | 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
#E9E9F3
oklch(93.7% 0.013 286.1)
-
Step 200
200
#D8D7EA
oklch(88.6% 0.026 288.3)
-
Step 300
300
#BEBDDE
oklch(81% 0.046 286.7)
-
Step 400
400
#9D9ACD
oklch(70.7% 0.074 287)
-
Step 500
500
#8680C0
oklch(63.1% 0.095 287.6)
-
Step 600
600
#7069AC
oklch(55.6% 0.102 287.4)
-
Step 700
700 (this color)
#57508C
oklch(46.6% 0.096 287.4)
-
Step 800
800
#4D4778
oklch(42.6% 0.08 288.1)
-
Step 900
900
#403C61
oklch(37.7% 0.063 288)
-
Step 950
950
#252339
oklch(26.9% 0.041 287.5)
#57508C 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) | #3C598E | 0.042 |
| Deuteranopia (no green cones) | #3B568B | 0.041 |
| Tritanopia (no blue cones) | #495C67 | 0.082 |
| Achromatopsia (no color) | #585858 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57508C
#57508C
oklch(46.6% 0.096 287.4)
- #605D0B
#605D0B
oklch(46.6% 0.096 107.3)
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 #57508C, 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 0.027
- Dusky Blue #475F94 ΔE 0.044
- Denim Blue #3B5B92 ΔE 0.045
- Dusty Grape #545775 ΔE 0.048
- Blueberry #464196 ΔE 0.056
- Light Navy Blue #2E5A88 ΔE 0.058
- YInMn Blue #415A77 ΔE 0.059
Use #57508C 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.