#573F6F
Closest named color: Dark Slate Blue (#483D8B). oklch(41.5% 0.082 306.1), rgb(87, 63, 111).
Aa
White text reads best on this color (8.95:1).
About this color
#573F6F is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.082 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.055 away. White text reads best on it, at 8.95:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.082) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.34:1 |
| White text | 8.95:1 |
Values
| HEX | #573F6F |
| RGB | rgb(87, 63, 111) |
| HSL | hsl(270, 28%, 34%) |
| OKLCH | oklch(41.5% 0.082 306.1) |
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 #573F6F | 8.95:1 | AAA | Lc -94.9 | Preferred for body text |
| Black text on #573F6F | 2.34:1 | Fails | Lc 13.5 | Not readable |
| #573F6F text on white | 8.95:1 | AAA | Lc 90.4 | Preferred for body text |
| #573F6F text on black | 2.34:1 | Fails | Lc -11.9 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE8F1
oklch(93.7% 0.013 306)
-
Step 200
200
#DDD5E8
oklch(88.5% 0.027 304.8)
-
Step 300
300
#C8B9DA
oklch(80.9% 0.049 305.9)
-
Step 400
400
#AC94C7
oklch(70.6% 0.078 305.9)
-
Step 500
500
#9879B9
oklch(63% 0.1 305.9)
-
Step 600
600
#8362A5
oklch(55.7% 0.107 305.9)
-
Step 700
700
#6F518D
oklch(49.2% 0.099 306.1)
-
Step 800
800 (this color)
#573F6F
oklch(41.5% 0.082 306.1)
-
Step 900
900
#4A385D
oklch(37.7% 0.065 305.8)
-
Step 950
950
#2B2136
oklch(26.9% 0.04 305.7)
#573F6F 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) | #344971 | 0.059 |
| Deuteranopia (no green cones) | #394A6E | 0.055 |
| Tritanopia (no blue cones) | #534751 | 0.063 |
| Achromatopsia (no color) | #494949 | 0.083 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F6F
#573F6F
oklch(41.5% 0.082 306.1)
- #40541D
#40541D
oklch(41.6% 0.084 126.6)
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 #573F6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.055
- Dusk #4E5481 ΔE 0.060
- Twilight #4E518B ΔE 0.061
- Dusty Grape #545775 ΔE 0.068
- Blueberry #464196 ΔE 0.070
- YInMn Blue #415A77 ΔE 0.080
- Rebecca Purple #663399 ΔE 0.082
- Purple Brown #673A3F ΔE 0.083
Use #573F6F 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.