#573776
Closest named color: Dark Slate Blue (#483D8B). oklch(40.4% 0.107 305.6), rgb(87, 55, 118).
Aa
White text reads best on this color (9.48:1).
About this color
#573776 is a dark, moderately saturated purple. In OKLCH its lightness is 40%, its chroma 0.107 and its hue 306°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.044 away. White text reads best on it, at 9.48:1.
| Hue family | Purples |
| Lightness | dark (40%) |
| Chroma | moderately saturated (0.107) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.21:1 |
| White text | 9.48:1 |
Values
| HEX | #573776 |
| RGB | rgb(87, 55, 118) |
| HSL | hsl(270, 36%, 34%) |
| OKLCH | oklch(40.4% 0.107 305.6) |
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 #573776 | 9.48:1 | AAA | Lc -96.0 | Preferred for body text |
| Black text on #573776 | 2.21:1 | Fails | Lc 12.2 | Not readable |
| #573776 text on white | 9.48:1 | AAA | Lc 91.7 | Preferred for body text |
| #573776 text on black | 2.21:1 | Fails | Lc -10.7 | 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
#F7F4FA
oklch(97.1% 0.009 308.4)
-
Step 100
100
#EDE7F4
oklch(93.6% 0.018 306.7)
-
Step 200
200
#DED4EC
oklch(88.5% 0.034 304.5)
-
Step 300
300
#CAB7E1
oklch(80.9% 0.062 305.6)
-
Step 400
400
#B090D2
oklch(70.7% 0.1 306.2)
-
Step 500
500
#9C74C6
oklch(63.1% 0.126 305.5)
-
Step 600
600
#875BB3
oklch(55.6% 0.138 305.5)
-
Step 700
700
#734A9A
oklch(49.1% 0.129 305.9)
-
Step 800
800 (this color)
#573776
oklch(40.4% 0.107 305.6)
-
Step 900
900
#4C3564
oklch(37.7% 0.082 305.4)
-
Step 950
950
#2D1F3B
oklch(27% 0.054 306.2)
#573776 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) | #244578 | 0.082 |
| Deuteranopia (no green cones) | #2D4674 | 0.075 |
| Tritanopia (no blue cones) | #524251 | 0.078 |
| Achromatopsia (no color) | #464646 | 0.107 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573776
#573776
oklch(40.4% 0.107 305.6)
- #3C5200
#3C5200
oklch(40.5% 0.102 125.4)
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 #573776, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.044
- Blueberry #464196 ΔE 0.062
- Rebecca Purple #663399 ΔE 0.065
- Twilight #4E518B ΔE 0.072
- Dusk #4E5481 ΔE 0.078
- Grape Purple #5D1451 ΔE 0.089
- Dusty Grape #545775 ΔE 0.091
- Cobalt #1E488F ΔE 0.092
Use #573776 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.