#573A75
Closest named color: Dark Slate Blue (#483D8B). oklch(40.9% 0.1 305.1), rgb(87, 58, 117).
Aa
White text reads best on this color (9.26:1).
About this color
#573A75 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.100 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.045 away. White text reads best on it, at 9.26:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.100) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #573A75 |
| RGB | rgb(87, 58, 117) |
| HSL | hsl(269, 34%, 34%) |
| OKLCH | oklch(40.9% 0.1 305.1) |
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 #573A75 | 9.26:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #573A75 | 2.26:1 | Fails | Lc 12.8 | Not readable |
| #573A75 text on white | 9.26:1 | AAA | Lc 91.2 | Preferred for body text |
| #573A75 text on black | 2.26:1 | Fails | Lc -11.2 | Not readable |
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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#ECE7F3
oklch(93.5% 0.017 304.8)
-
Step 200
200
#DED4EB
oklch(88.5% 0.033 305.3)
-
Step 300
300
#C9B8DF
oklch(80.9% 0.057 304.9)
-
Step 400
400
#AE92D0
oklch(70.8% 0.094 304.8)
-
Step 500
500
#9A76C3
oklch(63.1% 0.118 304.8)
-
Step 600
600
#855DB0
oklch(55.6% 0.13 304.8)
-
Step 700
700
#714C97
oklch(49.1% 0.121 305.1)
-
Step 800
800 (this color)
#573A75
oklch(40.9% 0.1 305.1)
-
Step 900
900
#4B3662
oklch(37.7% 0.077 305)
-
Step 950
950
#2C203A
oklch(27% 0.049 304.5)
#573A75 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) | #294677 | 0.074 |
| Deuteranopia (no green cones) | #314774 | 0.067 |
| Tritanopia (no blue cones) | #524452 | 0.073 |
| Achromatopsia (no color) | #474747 | 0.101 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573A75
#573A75
oklch(40.9% 0.1 305.1)
- #3E5305
#3E5305
oklch(41% 0.1 125)
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 #573A75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.045
- Blueberry #464196 ΔE 0.062
- Twilight #4E518B ΔE 0.066
- Rebecca Purple #663399 ΔE 0.068
- Dusk #4E5481 ΔE 0.071
- Dusty Grape #545775 ΔE 0.082
- Cobalt #1E488F ΔE 0.090
- Dusk Blue #26538D ΔE 0.093
Use #573A75 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.