#573C74
Closest named color: Dark Slate Blue (#483D8B). oklch(41.2% 0.095 304.8), rgb(87, 60, 116).
Aa
White text reads best on this color (9.11:1).
About this color
#573C74 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.095 and its hue 305°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.047 away. White text reads best on it, at 9.11:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.095) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.30:1 |
| White text | 9.11:1 |
Values
| HEX | #573C74 |
| RGB | rgb(87, 60, 116) |
| HSL | hsl(269, 32%, 35%) |
| OKLCH | oklch(41.2% 0.095 304.8) |
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 #573C74 | 9.11:1 | AAA | Lc -95.2 | Preferred for body text |
| Black text on #573C74 | 2.30:1 | Fails | Lc 13.1 | Not readable |
| #573C74 text on white | 9.11:1 | AAA | Lc 90.8 | Preferred for body text |
| #573C74 text on black | 2.30:1 | 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
#F6F4FA
oklch(97% 0.008 301.4)
-
Step 100
100
#ECE7F3
oklch(93.5% 0.017 304.8)
-
Step 200
200
#DED4EA
oklch(88.5% 0.032 306.2)
-
Step 300
300
#C9B8DE
oklch(80.9% 0.056 305.4)
-
Step 400
400
#AD93CD
oklch(70.7% 0.088 304.7)
-
Step 500
500
#9977C1
oklch(63.1% 0.114 304.5)
-
Step 600
600
#845FAD
oklch(55.7% 0.123 304.6)
-
Step 700
700
#704E94
oklch(49.1% 0.114 305)
-
Step 800
800 (this color)
#573C74
oklch(41.2% 0.095 304.8)
-
Step 900
900
#4B3761
oklch(37.8% 0.073 305.1)
-
Step 950
950
#2C2039
oklch(27% 0.048 305.5)
#573C74 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) | #2D4776 | 0.068 |
| Deuteranopia (no green cones) | #344873 | 0.062 |
| Tritanopia (no blue cones) | #524552 | 0.070 |
| Achromatopsia (no color) | #484848 | 0.096 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573C74
#573C74
oklch(41.2% 0.095 304.8)
- #3F530E
#3F530E
oklch(41.1% 0.095 125)
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 #573C74, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.047
- Blueberry #464196 ΔE 0.063
- Twilight #4E518B ΔE 0.063
- Dusk #4E5481 ΔE 0.066
- Rebecca Purple #663399 ΔE 0.071
- Dusty Grape #545775 ΔE 0.077
- YInMn Blue #415A77 ΔE 0.089
- Cobalt #1E488F ΔE 0.089
Use #573C74 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.