#573E6F
Closest named color: Dark Slate Blue (#483D8B). oklch(41.3% 0.084 306.6), rgb(87, 62, 111).
Aa
White text reads best on this color (9.03:1).
About this color
#573E6F is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.084 and its hue 307°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.055 away. White text reads best on it, at 9.03:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.084) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.32:1 |
| White text | 9.03:1 |
Values
| HEX | #573E6F |
| RGB | rgb(87, 62, 111) |
| HSL | hsl(271, 28%, 34%) |
| OKLCH | oklch(41.3% 0.084 306.6) |
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 #573E6F | 9.03:1 | AAA | Lc -95.1 | Preferred for body text |
| Black text on #573E6F | 2.32:1 | Fails | Lc 13.3 | Not readable |
| #573E6F text on white | 9.03:1 | AAA | Lc 90.7 | Preferred for body text |
| #573E6F text on black | 2.32:1 | Fails | Lc -11.7 | 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 800.
-
Step 50
50
#F6F4F9
oklch(97% 0.007 304.2)
-
Step 100
100
#ECE8F2
oklch(93.7% 0.014 304.1)
-
Step 200
200
#DED5E8
oklch(88.6% 0.027 307)
-
Step 300
300
#C9B9DA
oklch(81% 0.049 307.1)
-
Step 400
400
#AD94C8
oklch(70.7% 0.079 306.4)
-
Step 500
500
#9979B9
oklch(63.1% 0.1 306.7)
-
Step 600
600
#8461A5
oklch(55.6% 0.109 306.9)
-
Step 700
700
#70508E
oklch(49.2% 0.102 306.8)
-
Step 800
800 (this color)
#573E6F
oklch(41.3% 0.084 306.6)
-
Step 900
900
#4A385D
oklch(37.7% 0.065 305.8)
-
Step 950
950
#2C2136
oklch(27% 0.041 307.8)
#573E6F 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) | #334871 | 0.060 |
| Deuteranopia (no green cones) | #39496E | 0.055 |
| Tritanopia (no blue cones) | #534651 | 0.063 |
| Achromatopsia (no color) | #494949 | 0.085 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573E6F
#573E6F
oklch(41.3% 0.084 306.6)
- #3F531B
#3F531B
oklch(41.2% 0.084 126.5)
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 #573E6F, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.055
- Dusk #4E5481 ΔE 0.063
- Twilight #4E518B ΔE 0.063
- Blueberry #464196 ΔE 0.070
- Dusty Grape #545775 ΔE 0.070
- Rebecca Purple #663399 ΔE 0.081
- YInMn Blue #415A77 ΔE 0.083
- Purple Brown #673A3F ΔE 0.084
Use #573E6F 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.