#57579F
Closest named color: Dusky Blue (#475F94). oklch(49.2% 0.113 281.4), rgb(87, 87, 159).
Aa
White text reads best on this color (6.42:1).
About this color
#57579F is a medium-dark, moderately saturated purple. In OKLCH its lightness is 49%, its chroma 0.113 and its hue 281°. Its hue sits on the cool side of the wheel. The nearest named color is Dusky Blue (#475F94), ΔE 0.037 away. White text reads best on it, at 6.42:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | moderately saturated (0.113) |
| Temperature | cool |
| Nearest name | Dusky Blue (#475F94) |
| Black text | 3.26:1 |
| White text | 6.42:1 |
Values
| HEX | #57579F |
| RGB | rgb(87, 87, 159) |
| HSL | hsl(240, 29%, 48%) |
| OKLCH | oklch(49.2% 0.113 281.4) |
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 #57579F | 6.42:1 | AA | Lc -86.9 | Fine for body text |
| Black text on #57579F | 3.26:1 | AA large text | Lc 22.3 | Dividers and decoration only |
| #57579F text on white | 6.42:1 | AA | Lc 81.8 | Fine for body text |
| #57579F text on black | 3.26:1 | AA large text | Lc -20.1 | 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
#F4F5FA
oklch(97.1% 0.007 277.2)
-
Step 100
100
#E8E9F5
oklch(93.7% 0.016 282.3)
-
Step 200
200
#D5D7ED
oklch(88.4% 0.03 281.6)
-
Step 300
300
#BABDE4
oklch(80.9% 0.055 281.6)
-
Step 400
400
#979AD6
oklch(70.6% 0.087 281.7)
-
Step 500
500
#7E80CC
oklch(63% 0.113 281.5)
-
Step 600
600
#6869B8
oklch(55.6% 0.121 281.2)
-
Step 700
700 (this color)
#57579F
oklch(49.2% 0.113 281.4)
-
Step 800
800
#474781
oklch(42.7% 0.095 281.6)
-
Step 900
900
#3B3C67
oklch(37.6% 0.073 281.3)
-
Step 950
950
#23233C
oklch(26.9% 0.046 282.9)
#57579F 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) | #3B61A2 | 0.041 |
| Deuteranopia (no green cones) | #375C9D | 0.042 |
| Tritanopia (no blue cones) | #3F6673 | 0.099 |
| Achromatopsia (no color) | #5F5F5F | 0.113 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #57579F
#57579F
oklch(49.2% 0.113 281.4)
- #6D6200
#6D6200
oklch(49.1% 0.103 101.8)
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 #57579F, closest first.
No curated palette has a color within ΔE 0.04 of #57579F.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dusky Blue #475F94 ΔE 0.037
- Twilight #4E518B ΔE 0.038
- Denim Blue #3B5B92 ΔE 0.045
- Dusk #4E5481 ΔE 0.051
- French Blue #436BAD ΔE 0.057
- Denim #3B638C ΔE 0.061
- Iris #6258C4 ΔE 0.061
- Light Navy Blue #2E5A88 ΔE 0.066
Use #57579F 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.