#573F57
Closest named color: Purple Brown (#673A3F). oklch(40.3% 0.05 326.5), rgb(87, 63, 87).
Aa
White text reads best on this color (9.31:1).
About this color
#573F57 is a dark, muted purple. In OKLCH its lightness is 40%, its chroma 0.050 and its hue 326°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.047 away. White text reads best on it, at 9.31:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | muted (0.050) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.25:1 |
| White text | 9.31:1 |
Values
| HEX | #573F57 |
| RGB | rgb(87, 63, 87) |
| HSL | hsl(300, 16%, 29%) |
| OKLCH | oklch(40.3% 0.05 326.5) |
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 #573F57 | 9.31:1 | AAA | Lc -95.8 | Preferred for body text |
| Black text on #573F57 | 2.25:1 | Fails | Lc 12.5 | Not readable |
| #573F57 text on white | 9.31:1 | AAA | Lc 91.5 | Preferred for body text |
| #573F57 text on black | 2.25:1 | Fails | Lc -10.9 | 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
#F7F4F7
oklch(97% 0.005 325.6)
-
Step 100
100
#EDE8ED
oklch(93.6% 0.009 325.6)
-
Step 200
200
#DFD6DF
oklch(88.6% 0.016 325.7)
-
Step 300
300
#CBBACB
oklch(80.8% 0.03 325.9)
-
Step 400
400
#B197B0
oklch(70.8% 0.046 327.3)
-
Step 500
500
#9D7D9D
oklch(63.1% 0.06 326.3)
-
Step 600
600
#886688
oklch(55.6% 0.066 326.4)
-
Step 700
700
#735573
oklch(49.2% 0.06 326.4)
-
Step 800
800 (this color)
#573F57
oklch(40.3% 0.05 326.5)
-
Step 900
900
#4D3A4D
oklch(37.7% 0.041 326.3)
-
Step 950
950
#2D222D
oklch(26.9% 0.026 326.3)
#573F57 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) | #3D4558 | 0.046 |
| Deuteranopia (no green cones) | #434856 | 0.042 |
| Tritanopia (no blue cones) | #594147 | 0.030 |
| Achromatopsia (no color) | #474747 | 0.050 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573F57
#573F57
oklch(40.3% 0.05 326.5)
- #365038
#365038
oklch(40.3% 0.051 146.5)
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 #573F57, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.047
- Charcoal Grey #3C4142 ΔE 0.062
- Brownish Purple #76424E ΔE 0.063
- Dark Grey Blue #29465B ΔE 0.072
- Dusty Grape #545775 ΔE 0.074
- Onyx #343A40 ΔE 0.076
- Charcoal #264653 ΔE 0.077
- Dusk #4E5481 ΔE 0.080
Use #573F57 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.