#573C7D
Closest named color: Dark Slate Blue (#483D8B). oklch(41.8% 0.107 301.1), rgb(87, 60, 125).
Aa
White text reads best on this color (8.94:1).
About this color
#573C7D is a dark, moderately saturated purple. In OKLCH its lightness is 42%, its chroma 0.107 and its hue 301°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Dark Slate Blue (#483D8B), ΔE 0.035 away. White text reads best on it, at 8.94:1.
| Hue family | Purples |
| Lightness | dark (42%) |
| Chroma | moderately saturated (0.107) |
| Temperature | in between |
| Nearest name | Dark Slate Blue (#483D8B) |
| Black text | 2.34:1 |
| White text | 8.94:1 |
Values
| HEX | #573C7D |
| RGB | rgb(87, 60, 125) |
| HSL | hsl(265, 35%, 36%) |
| OKLCH | oklch(41.8% 0.107 301.1) |
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 #573C7D | 8.94:1 | AAA | Lc -94.8 | Preferred for body text |
| Black text on #573C7D | 2.34:1 | Fails | Lc 13.7 | Not readable |
| #573C7D text on white | 8.94:1 | AAA | Lc 90.3 | Preferred for body text |
| #573C7D text on black | 2.34:1 | Fails | Lc -12.0 | 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
#ECE7F4
oklch(93.6% 0.018 303.4)
-
Step 200
200
#DDD4ED
oklch(88.5% 0.035 302)
-
Step 300
300
#C7B8E3
oklch(80.9% 0.062 301)
-
Step 400
400
#AB92D6
oklch(70.7% 0.101 300.7)
-
Step 500
500
#9775CA
oklch(63% 0.129 301.2)
-
Step 600
600
#825DB7
oklch(55.7% 0.139 301)
-
Step 700
700
#6E4C9E
oklch(49.2% 0.13 300.9)
-
Step 800
800 (this color)
#573C7D
oklch(41.8% 0.107 301.1)
-
Step 900
900
#493667
oklch(37.7% 0.084 300.3)
-
Step 950
950
#2B203C
oklch(27.1% 0.052 301.1)
#573C7D 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) | #27497F | 0.075 |
| Deuteranopia (no green cones) | #2E497B | 0.069 |
| Tritanopia (no blue cones) | #504856 | 0.083 |
| Achromatopsia (no color) | #494949 | 0.108 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573C7D
#573C7D
oklch(41.8% 0.107 301.1)
- #455400
#455400
oklch(41.8% 0.1 120.8)
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 #573C7D, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Dark Slate Blue #483D8B ΔE 0.035
- Blueberry #464196 ΔE 0.050
- Twilight #4E518B ΔE 0.058
- Rebecca Purple #663399 ΔE 0.058
- Dusk #4E5481 ΔE 0.066
- Dusty Grape #545775 ΔE 0.081
- Cobalt #1E488F ΔE 0.084
- Dusk Blue #26538D ΔE 0.086
Use #573C7D 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.