#573E75
Closest named color: Dark Slate Blue (#483D8B). oklch(41.7% 0.093 303.6), rgb(87, 62, 117).
Aa
White text reads best on this color (8.93:1).
About this color
#573E75 is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.093 and its hue 304°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.046 away. White text reads best on it, at 8.93:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.093) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.35:1 |
| White text | 8.93:1 |
Values
| HEX | #573E75 |
| RGB | rgb(87, 62, 117) |
| HSL | hsl(267, 31%, 35%) |
| OKLCH | oklch(41.7% 0.093 303.6) |
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 #573E75 | 8.93:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #573E75 | 2.35:1 | Fails | Lc 13.6 | Not readable |
| #573E75 text on white | 8.93:1 | AAA | Lc 90.3 | Preferred for body text |
| #573E75 text on black | 2.35:1 | Fails | Lc -12.0 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F3
oklch(93.5% 0.017 304.8)
-
Step 200
200
#DDD5EA
oklch(88.6% 0.03 303)
-
Step 300
300
#C8B9DE
oklch(81% 0.054 303.6)
-
Step 400
400
#AC93CD
oklch(70.6% 0.087 304)
-
Step 500
500
#9878C0
oklch(63.1% 0.111 303.8)
-
Step 600
600
#8260AC
oklch(55.6% 0.119 303.4)
-
Step 700
700
#6E4F94
oklch(49.1% 0.111 303.3)
-
Step 800
800 (this color)
#573E75
oklch(41.7% 0.093 303.6)
-
Step 900
900
#4A3761
oklch(37.7% 0.073 303.9)
-
Step 950
950
#2B2139
oklch(27.1% 0.045 302.6)
#573E75 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) | #2F4977 | 0.065 |
| Deuteranopia (no green cones) | #354974 | 0.059 |
| Tritanopia (no blue cones) | #524754 | 0.069 |
| Achromatopsia (no color) | #4A4A4A | 0.093 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573E75
#573E75
oklch(41.7% 0.093 303.6)
- #425411
#425411
oklch(41.6% 0.092 123.7)
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 #573E75, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.046
- Twilight #4E518B ΔE 0.058
- Dusk #4E5481 ΔE 0.061
- Blueberry #464196 ΔE 0.061
- Rebecca Purple #663399 ΔE 0.072
- Dusty Grape #545775 ΔE 0.072
- YInMn Blue #415A77 ΔE 0.084
- Dusk Blue #26538D ΔE 0.086
Use #573E75 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.