#573C63
Closest named color: Purple Brown (#673A3F). oklch(40.3% 0.072 315), rgb(87, 60, 99).
Aa
White text reads best on this color (9.40:1).
About this color
#573C63 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.072 and its hue 315°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.066 away. White text reads best on it, at 9.40:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.072) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.23:1 |
| White text | 9.40:1 |
Values
| HEX | #573C63 |
| RGB | rgb(87, 60, 99) |
| HSL | hsl(282, 25%, 31%) |
| OKLCH | oklch(40.3% 0.072 315) |
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 #573C63 | 9.40:1 | AAA | Lc -95.9 | Preferred for body text |
| Black text on #573C63 | 2.23:1 | Fails | Lc 12.3 | Not readable |
| #573C63 text on white | 9.40:1 | AAA | Lc 91.7 | Preferred for body text |
| #573C63 text on black | 2.23:1 | Fails | Lc -10.7 | 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
#F7F4F8
oklch(97.1% 0.006 317.8)
-
Step 100
100
#EDE8F0
oklch(93.7% 0.012 313.2)
-
Step 200
200
#DFD5E4
oklch(88.5% 0.023 314.7)
-
Step 300
300
#CBB9D4
oklch(80.9% 0.042 314.6)
-
Step 400
400
#B194BE
oklch(70.7% 0.068 315.3)
-
Step 500
500
#9D7AAD
oklch(63.1% 0.084 315)
-
Step 600
600
#886299
oklch(55.6% 0.093 315)
-
Step 700
700
#735182
oklch(49.1% 0.086 315.1)
-
Step 800
800 (this color)
#573C63
oklch(40.3% 0.072 315)
-
Step 900
900
#4D3856
oklch(37.6% 0.057 315.5)
-
Step 950
950
#2D2132
oklch(27% 0.035 315.8)
#573C63 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) | #364564 | 0.058 |
| Deuteranopia (no green cones) | #3C4762 | 0.053 |
| Tritanopia (no blue cones) | #56414B | 0.048 |
| Achromatopsia (no color) | #464646 | 0.072 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573C63
#573C63
oklch(40.3% 0.072 315)
- #375128
#375128
oklch(40.3% 0.072 135)
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 #573C63, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.066
- Dark Slate Blue #483D8B ΔE 0.072
- Dusk #4E5481 ΔE 0.074
- Brownish Purple #76424E ΔE 0.075
- Dusty Grape #545775 ΔE 0.076
- Dark Grey Blue #29465B ΔE 0.078
- Twilight #4E518B ΔE 0.079
- Charcoal Grey #3C4142 ΔE 0.080
Use #573C63 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.