#573684
Closest named color: Dark Slate Blue (#483D8B). oklch(41.2% 0.127 300.4), rgb(87, 54, 132).
Aa
White text reads best on this color (9.26:1).
About this color
#573684 is a dark, moderately saturated purple. In OKLCH its lightness is 41%, its chroma 0.127 and its hue 300°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.032 away. White text reads best on it, at 9.26:1.
| Hue family | Purples |
| Lightness | dark (41%) |
| Chroma | moderately saturated (0.127) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.26:1 |
| White text | 9.26:1 |
Values
| HEX | #573684 |
| RGB | rgb(87, 54, 132) |
| HSL | hsl(265, 42%, 36%) |
| OKLCH | oklch(41.2% 0.127 300.4) |
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 #573684 | 9.26:1 | AAA | Lc -95.4 | Preferred for body text |
| Black text on #573684 | 2.26:1 | Fails | Lc 12.9 | Not readable |
| #573684 text on white | 9.26:1 | AAA | Lc 91.1 | Preferred for body text |
| #573684 text on black | 2.26:1 | Fails | Lc -11.3 | 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
#F6F4FB
oklch(97.1% 0.009 299.2)
-
Step 100
100
#ECE7F6
oklch(93.6% 0.021 301.1)
-
Step 200
200
#DDD3F1
oklch(88.4% 0.042 300.7)
-
Step 300
300
#C8B6EA
oklch(80.9% 0.075 300.6)
-
Step 400
400
#AD8FDF
oklch(70.8% 0.118 300.7)
-
Step 500
500
#9971D6
oklch(63.1% 0.151 300.4)
-
Step 600
600
#8457C3
oklch(55.6% 0.164 300.4)
-
Step 700
700
#7046A9
oklch(49.1% 0.154 300.4)
-
Step 800
800 (this color)
#573684
oklch(41.2% 0.127 300.4)
-
Step 900
900
#4B336D
oklch(37.8% 0.098 300.9)
-
Step 950
950
#2C1E40
oklch(27% 0.063 301.3)
#573684 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) | #124787 | 0.094 |
| Deuteranopia (no green cones) | #204782 | 0.086 |
| Tritanopia (no blue cones) | #4E4657 | 0.097 |
| Achromatopsia (no color) | #474747 | 0.128 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573684
#573684
oklch(41.2% 0.127 300.4)
- #445200
#445200
oklch(41.2% 0.098 120.3)
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 #573684, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.032
- Rebecca Purple #663399 ΔE 0.044
- Blueberry #464196 ΔE 0.046
- Twilight #4E518B ΔE 0.070
- Dusk #4E5481 ΔE 0.082
- Cobalt #1E488F ΔE 0.087
- Indigo #4B0082 ΔE 0.090
- Chrysanthemum #560BAD ΔE 0.091
Use #573684 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.