#573A51
Closest named color: Purple Brown (#673A3F). oklch(39% 0.054 334.2), rgb(87, 58, 81).
Aa
White text reads best on this color (9.86:1).
About this color
#573A51 is a dark, muted purple. In OKLCH its lightness is 39%, its chroma 0.054 and its hue 334°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Purple Brown (#673A3F), ΔE 0.043 away. White text reads best on it, at 9.86:1.
| Hue family | Purples |
| Lightness | dark (39%) |
| Chroma | muted (0.054) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.12:1 |
| White text | 9.86:1 |
Values
| HEX | #573A51 |
| RGB | rgb(87, 58, 81) |
| HSL | hsl(312, 20%, 28%) |
| OKLCH | oklch(39% 0.054 334.2) |
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 #573A51 | 9.86:1 | AAA | Lc -97.0 | Preferred for body text |
| Black text on #573A51 | 2.12:1 | Fails | Lc 11.1 | Not readable |
| #573A51 text on white | 9.86:1 | AAA | Lc 92.8 | Preferred for body text |
| #573A51 text on black | 2.12:1 | Fails | Lc -9.7 | 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
#F8F4F7
oklch(97.1% 0.006 334)
-
Step 100
100
#EFE7ED
oklch(93.6% 0.012 334.1)
-
Step 200
200
#E3D4DF
oklch(88.5% 0.022 335)
-
Step 300
300
#D2B7CB
oklch(80.9% 0.041 335.1)
-
Step 400
400
#BA92B1
oklch(70.7% 0.064 334.3)
-
Step 500
500
#A9769E
oklch(63.1% 0.084 334.5)
-
Step 600
600
#935F89
oklch(55.6% 0.089 333.9)
-
Step 700
700
#7E4E74
oklch(49.2% 0.084 334.7)
-
Step 800
800
#66405F
oklch(42.7% 0.07 333.6)
-
Step 900
900 (this color)
#573A51
oklch(39% 0.054 334.2)
-
Step 950
950
#31202D
oklch(27% 0.034 335.2)
#573A51 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) | #3A4152 | 0.053 |
| Deuteranopia (no green cones) | #414550 | 0.049 |
| Tritanopia (no blue cones) | #5A3B42 | 0.027 |
| Achromatopsia (no color) | #434343 | 0.055 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573A51
#573A51
oklch(39% 0.054 334.2)
- #2D4E38
#2D4E38
oklch(39.1% 0.054 154)
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 #573A51, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.043
- Charcoal Grey #3C4142 ΔE 0.061
- Brownish Purple #76424E ΔE 0.068
- Onyx #343A40 ΔE 0.071
- Dark Grey Blue #29465B ΔE 0.076
- Charcoal #264653 ΔE 0.081
- Dark Slate Gray #2F4F4F ΔE 0.087
- Grape Purple #5D1451 ΔE 0.088
Use #573A51 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.