#573C55
Closest named color: Purple Brown (#673A3F). oklch(39.6% 0.054 329.1), rgb(87, 60, 85).
Aa
White text reads best on this color (9.62:1).
About this color
#573C55 is a dark, muted purple. In OKLCH its lightness is 40%, its chroma 0.054 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 0.046 away. White text reads best on it, at 9.62:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | muted (0.054) |
| Temperature | in between |
| Nearest name | Purple Brown (#673A3F) |
| Black text | 2.18:1 |
| White text | 9.62:1 |
Values
| HEX | #573C55 |
| RGB | rgb(87, 60, 85) |
| HSL | hsl(304, 18%, 29%) |
| OKLCH | oklch(39.6% 0.054 329.1) |
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 #573C55 | 9.62:1 | AAA | Lc -96.5 | Preferred for body text |
| Black text on #573C55 | 2.18:1 | Fails | Lc 11.7 | Not readable |
| #573C55 text on white | 9.62:1 | AAA | Lc 92.2 | Preferred for body text |
| #573C55 text on black | 2.18:1 | Fails | Lc -10.2 | 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
#EEE7EE
oklch(93.5% 0.012 325.7)
-
Step 200
200
#E2D4E1
oklch(88.5% 0.023 328)
-
Step 300
300
#D0B8CE
oklch(81% 0.04 328.6)
-
Step 400
400
#B892B5
oklch(70.6% 0.066 328.8)
-
Step 500
500
#A677A2
oklch(63.1% 0.083 329.4)
-
Step 600
600
#91608D
oklch(55.7% 0.089 329.6)
-
Step 700
700
#7B4F78
oklch(49.2% 0.083 329.1)
-
Step 800
800
#644162
oklch(42.8% 0.069 328.7)
-
Step 900
900 (this color)
#573C55
oklch(39.6% 0.054 329.1)
-
Step 950
950
#30202F
oklch(27% 0.036 328.6)
#573C55 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) | #3B4356 | 0.050 |
| Deuteranopia (no green cones) | #414654 | 0.047 |
| Tritanopia (no blue cones) | #593E45 | 0.030 |
| Achromatopsia (no color) | #454545 | 0.054 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573C55
#573C55
oklch(39.6% 0.054 329.1)
- #314F37
#314F37
oklch(39.6% 0.054 149.7)
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 #573C55, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Purple Brown #673A3F ΔE 0.046
- Charcoal Grey #3C4142 ΔE 0.063
- Brownish Purple #76424E ΔE 0.066
- Dark Grey Blue #29465B ΔE 0.074
- Onyx #343A40 ΔE 0.074
- Charcoal #264653 ΔE 0.080
- Dusty Grape #545775 ΔE 0.082
- Dark Slate Gray #2F4F4F ΔE 0.085
Use #573C55 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.