#573B5E
Closest named color: Purple Brown (#673A3F). oklch(39.8% 0.067 319.4), rgb(87, 59, 94).
Aa
White text reads best on this color (9.57:1).
About this color
#573B5E is a dark, muted purple. In OKLCH its lightness is 40%, its chroma 0.067 and its hue 319°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.060 away. White text reads best on it, at 9.57:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | muted (0.067) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.19:1 |
| White text | 9.57:1 |
Values
| HEX | #573B5E |
| RGB | rgb(87, 59, 94) |
| HSL | hsl(288, 23%, 30%) |
| OKLCH | oklch(39.8% 0.067 319.4) |
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 #573B5E | 9.57:1 | AAA | Lc -96.3 | Preferred for body text |
| Black text on #573B5E | 2.19:1 | Fails | Lc 11.9 | Not readable |
| #573B5E text on white | 9.57:1 | AAA | Lc 92.1 | Preferred for body text |
| #573B5E text on black | 2.19:1 | Fails | Lc -10.3 | 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 900.
-
Step 50
50
#F7F4F8
oklch(97.1% 0.006 317.8)
-
Step 100
100
#EEE7F0
oklch(93.6% 0.014 318.7)
-
Step 200
200
#E2D4E5
oklch(88.6% 0.027 320.3)
-
Step 300
300
#CFB7D5
oklch(80.9% 0.049 319.5)
-
Step 400
400
#B791C1
oklch(70.8% 0.08 319.2)
-
Step 500
500
#A575B1
oklch(63.2% 0.103 319.5)
-
Step 600
600
#905C9C
oklch(55.6% 0.112 319.9)
-
Step 700
700
#7A4C86
oklch(49.2% 0.104 319.1)
-
Step 800
800
#633E6C
oklch(42.6% 0.086 319.6)
-
Step 900
900 (this color)
#573B5E
oklch(39.8% 0.067 319.4)
-
Step 950
950
#301F34
oklch(27% 0.045 319.8)
#573B5E 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) | #37435F | 0.056 |
| Deuteranopia (no green cones) | #3D465D | 0.053 |
| Tritanopia (no blue cones) | #573F48 | 0.043 |
| Achromatopsia (no color) | #454545 | 0.068 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573B5E
#573B5E
oklch(39.8% 0.067 319.4)
- #33502C
#33502C
oklch(39.8% 0.068 139.6)
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 #573B5E, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.060
- Brownish Purple #76424E ΔE 0.073
- Charcoal Grey #3C4142 ΔE 0.075
- Dark Grey Blue #29465B ΔE 0.077
- Dark Slate Blue #483D8B ΔE 0.080
- Dusty Grape #545775 ΔE 0.080
- Dusk #4E5481 ΔE 0.080
- Onyx #343A40 ΔE 0.083
Use #573B5E 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.