#573E6C
Closest named color: Dark Slate Blue (#483D8B). oklch(41.2% 0.08 308.2), rgb(87, 62, 108).
Aa
White text reads best on this color (9.08:1).
About this color
#573E6C is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.080 and its hue 308°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.059 away. White text reads best on it, at 9.08:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.080) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.31:1 |
| White text | 9.08:1 |
Values
| HEX | #573E6C |
| RGB | rgb(87, 62, 108) |
| HSL | hsl(273, 27%, 33%) |
| OKLCH | oklch(41.2% 0.08 308.2) |
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 #573E6C | 9.08:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #573E6C | 2.31:1 | Fails | Lc 13.2 | Not readable |
| #573E6C text on white | 9.08:1 | AAA | Lc 90.8 | Preferred for body text |
| #573E6C text on black | 2.31:1 | Fails | Lc -11.5 | 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
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE8F1
oklch(93.7% 0.013 306)
-
Step 200
200
#DED5E7
oklch(88.6% 0.026 308.1)
-
Step 300
300
#C9B9D8
oklch(80.9% 0.046 308.5)
-
Step 400
400
#AE94C5
oklch(70.7% 0.076 308.6)
-
Step 500
500
#9A79B6
oklch(63.1% 0.096 308.6)
-
Step 600
600
#8462A2
oklch(55.6% 0.103 307.8)
-
Step 700
700
#70518B
oklch(49.2% 0.096 307.8)
-
Step 800
800 (this color)
#573E6C
oklch(41.2% 0.08 308.2)
-
Step 900
900
#4B385B
oklch(37.7% 0.063 308.5)
-
Step 950
950
#2C2135
oklch(27% 0.039 309.1)
#573E6C 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) | #34476E | 0.059 |
| Deuteranopia (no green cones) | #3A496B | 0.054 |
| Tritanopia (no blue cones) | #544550 | 0.058 |
| Achromatopsia (no color) | #484848 | 0.081 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573E6C
#573E6C
oklch(41.2% 0.08 308.2)
- #3E5320
#3E5320
oklch(41.2% 0.08 128.2)
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 #573E6C, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.059
- Dusk #4E5481 ΔE 0.064
- Twilight #4E518B ΔE 0.066
- Dusty Grape #545775 ΔE 0.070
- Blueberry #464196 ΔE 0.075
- Purple Brown #673A3F ΔE 0.079
- Brownish Purple #76424E ΔE 0.081
- Dark Grey Blue #29465B ΔE 0.082
Use #573E6C 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.