#573F55
Closest named color: Purple Brown (#673A3F). oklch(40.2% 0.048 329.2), rgb(87, 63, 85).
Aa
White text reads best on this color (9.34:1).
About this color
#573F55 is a dark, muted purple. In OKLCH its lightness is 40%, its chroma 0.048 and its hue 329°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.044 away. White text reads best on it, at 9.34:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | muted (0.048) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.24:1 |
| White text | 9.34:1 |
Values
| HEX | #573F55 |
| RGB | rgb(87, 63, 85) |
| HSL | hsl(305, 16%, 29%) |
| OKLCH | oklch(40.2% 0.048 329.2) |
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 #573F55 | 9.34:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #573F55 | 2.24:1 | Fails | Lc 12.4 | Not readable |
| #573F55 text on white | 9.34:1 | AAA | Lc 91.5 | Preferred for body text |
| #573F55 text on black | 2.24:1 | Fails | Lc -10.8 | 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
#EDE8EC
oklch(93.6% 0.008 332.1)
-
Step 200
200
#DFD6DE
oklch(88.6% 0.015 329.1)
-
Step 300
300
#CBBACA
oklch(80.8% 0.029 327.6)
-
Step 400
400
#B197AE
oklch(70.7% 0.044 329.8)
-
Step 500
500
#9D7D9B
oklch(63% 0.058 328.3)
-
Step 600
600
#886685
oklch(55.5% 0.062 329.3)
-
Step 700
700
#735571
oklch(49.1% 0.057 328.6)
-
Step 800
800 (this color)
#573F55
oklch(40.2% 0.048 329.2)
-
Step 900
900
#4D3B4B
oklch(37.8% 0.036 330)
-
Step 950
950
#2D222C
oklch(26.9% 0.024 329.2)
#573F55 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) | #3E4556 | 0.044 |
| Deuteranopia (no green cones) | #444854 | 0.041 |
| Tritanopia (no blue cones) | #594147 | 0.027 |
| Achromatopsia (no color) | #474747 | 0.048 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F55
#573F55
oklch(40.2% 0.048 329.2)
- #36503A
#36503A
oklch(40.3% 0.048 148.6)
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 #573F55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.044
- Charcoal Grey #3C4142 ΔE 0.060
- Brownish Purple #76424E ΔE 0.062
- Dark Grey Blue #29465B ΔE 0.071
- Onyx #343A40 ΔE 0.074
- Dusty Grape #545775 ΔE 0.076
- Charcoal #264653 ΔE 0.077
- Dark Slate Gray #2F4F4F ΔE 0.079
Use #573F55 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.