#573E69
Closest named color: Dark Slate Blue (#483D8B). oklch(41% 0.076 310.1), rgb(87, 62, 105).
Aa
White text reads best on this color (9.13:1).
About this color
#573E69 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.076 and its hue 310°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.064 away. White text reads best on it, at 9.13:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.076) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.29:1 |
| White text | 9.13:1 |
Values
| HEX | #573E69 |
| RGB | rgb(87, 62, 105) |
| HSL | hsl(275, 26%, 33%) |
| OKLCH | oklch(41% 0.076 310.1) |
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 #573E69 | 9.13:1 | AAA | Lc -95.3 | Preferred for body text |
| Black text on #573E69 | 2.29:1 | Fails | Lc 13.0 | Not readable |
| #573E69 text on white | 9.13:1 | AAA | Lc 90.9 | Preferred for body text |
| #573E69 text on black | 2.29:1 | Fails | Lc -11.4 | 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
#F7F4F8
oklch(97.1% 0.006 317.8)
-
Step 100
100
#ECE8F0
oklch(93.6% 0.011 308.3)
-
Step 200
200
#DED5E6
oklch(88.5% 0.025 309.3)
-
Step 300
300
#C9B9D7
oklch(80.9% 0.045 309.2)
-
Step 400
400
#AE95C2
oklch(70.7% 0.07 309.8)
-
Step 500
500
#9A7AB3
oklch(63.1% 0.091 309.6)
-
Step 600
600
#85629E
oklch(55.5% 0.098 310.2)
-
Step 700
700
#715187
oklch(49.1% 0.091 310.6)
-
Step 800
800 (this color)
#573E69
oklch(41% 0.076 310.1)
-
Step 900
900
#4B3859
oklch(37.6% 0.06 310.1)
-
Step 950
950
#2C2134
oklch(26.9% 0.038 310.4)
#573E69 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) | #36476B | 0.056 |
| Deuteranopia (no green cones) | #3B4968 | 0.054 |
| Tritanopia (no blue cones) | #55444E | 0.054 |
| Achromatopsia (no color) | #484848 | 0.076 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573E69
#573E69
oklch(41% 0.076 310.1)
- #3C5224
#3C5224
oklch(40.9% 0.075 130.3)
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 #573E69, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.064
- Dusk #4E5481 ΔE 0.066
- Twilight #4E518B ΔE 0.069
- Dusty Grape #545775 ΔE 0.070
- Purple Brown #673A3F ΔE 0.074
- Brownish Purple #76424E ΔE 0.078
- Blueberry #464196 ΔE 0.079
- Dark Grey Blue #29465B ΔE 0.080
Use #573E69 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.