#573C6D
Closest named color: Dark Slate Blue (#483D8B). oklch(40.8% 0.085 308.4), rgb(87, 60, 109).
Aa
White text reads best on this color (9.24:1).
About this color
#573C6D is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.085 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.057 away. White text reads best on it, at 9.24:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.085) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.27:1 |
| White text | 9.24:1 |
Values
| HEX | #573C6D |
| RGB | rgb(87, 60, 109) |
| HSL | hsl(273, 29%, 33%) |
| OKLCH | oklch(40.8% 0.085 308.4) |
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 #573C6D | 9.24:1 | AAA | Lc -95.5 | Preferred for body text |
| Black text on #573C6D | 2.27:1 | Fails | Lc 12.8 | Not readable |
| #573C6D text on white | 9.24:1 | AAA | Lc 91.2 | Preferred for body text |
| #573C6D text on black | 2.27:1 | 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
#F7F4F9
oklch(97.1% 0.007 312.3)
-
Step 100
100
#ECE7F1
oklch(93.5% 0.014 308.3)
-
Step 200
200
#DED5E8
oklch(88.6% 0.027 307)
-
Step 300
300
#CAB8DA
oklch(80.8% 0.051 309)
-
Step 400
400
#AF93C7
oklch(70.7% 0.08 308.9)
-
Step 500
500
#9B78B9
oklch(63.1% 0.102 308.4)
-
Step 600
600
#8660A5
oklch(55.6% 0.111 308.5)
-
Step 700
700
#714F8D
oklch(49% 0.103 308.3)
-
Step 800
800 (this color)
#573C6D
oklch(40.8% 0.085 308.4)
-
Step 900
900
#4C375D
oklch(37.7% 0.068 308.8)
-
Step 950
950
#2C2136
oklch(27% 0.041 307.8)
#573C6D 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) | #31466F | 0.064 |
| Deuteranopia (no green cones) | #38486C | 0.058 |
| Tritanopia (no blue cones) | #54444F | 0.062 |
| Achromatopsia (no color) | #474747 | 0.086 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573C6D
#573C6D
oklch(40.8% 0.085 308.4)
- #3C521B
#3C521B
oklch(40.7% 0.085 128.1)
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 #573C6D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.057
- Twilight #4E518B ΔE 0.068
- Dusk #4E5481 ΔE 0.068
- Blueberry #464196 ΔE 0.073
- Dusty Grape #545775 ΔE 0.076
- Purple Brown #673A3F ΔE 0.082
- Rebecca Purple #663399 ΔE 0.082
- Dark Grey Blue #29465B ΔE 0.085
Use #573C6D 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.