#573F5B
Closest named color: Purple Brown (#673A3F). oklch(40.5% 0.055 321.6), rgb(87, 63, 91).
Aa
White text reads best on this color (9.26:1).
About this color
#573F5B is a dark, muted purple. In OKLCH its lightness is 40%, its chroma 0.055 and its hue 322°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.052 away. White text reads best on it, at 9.26:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | muted (0.055) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #573F5B |
| RGB | rgb(87, 63, 91) |
| HSL | hsl(291, 18%, 30%) |
| OKLCH | oklch(40.5% 0.055 321.6) |
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 #573F5B | 9.26:1 | AAA | Lc -95.6 | Preferred for body text |
| Black text on #573F5B | 2.26:1 | Fails | Lc 12.6 | Not readable |
| #573F5B text on white | 9.26:1 | AAA | Lc 91.3 | Preferred for body text |
| #573F5B text on black | 2.26:1 | Fails | Lc -11.0 | 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
#F7F4F7
oklch(97% 0.005 325.6)
-
Step 100
100
#EDE8EE
oklch(93.7% 0.01 320.5)
-
Step 200
200
#DFD5E0
oklch(88.4% 0.018 323)
-
Step 300
300
#CBBACD
oklch(80.9% 0.032 322.6)
-
Step 400
400
#B096B4
oklch(70.6% 0.052 321.8)
-
Step 500
500
#9C7DA2
oklch(63.2% 0.065 320.8)
-
Step 600
600
#87658D
oklch(55.5% 0.073 321.3)
-
Step 700
700
#725477
oklch(49% 0.066 321.6)
-
Step 800
800 (this color)
#573F5B
oklch(40.5% 0.055 321.6)
-
Step 900
900
#4C3A4F
oklch(37.6% 0.042 321.5)
-
Step 950
950
#2D222E
oklch(27% 0.027 323.6)
#573F5B 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) | #3C465C | 0.048 |
| Deuteranopia (no green cones) | #42485A | 0.043 |
| Tritanopia (no blue cones) | #584249 | 0.035 |
| Achromatopsia (no color) | #474747 | 0.056 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F5B
#573F5B
oklch(40.5% 0.055 321.6)
- #385135
#385135
oklch(40.6% 0.055 141.9)
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 #573F5B, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.052
- Brownish Purple #76424E ΔE 0.065
- Charcoal Grey #3C4142 ΔE 0.067
- Dusty Grape #545775 ΔE 0.072
- Dark Grey Blue #29465B ΔE 0.072
- Dusk #4E5481 ΔE 0.076
- Charcoal #264653 ΔE 0.079
- Onyx #343A40 ΔE 0.080
Use #573F5B 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.