#573C9A
Closest named color: Blueberry (#464196). oklch(43.8% 0.147 292.5), rgb(87, 60, 154).
Aa
White text reads best on this color (8.33:1).
About this color
#573C9A is a dark, vivid purple. In OKLCH its lightness is 44%, its chroma 0.147 and its hue 293°. Its hue sits between the warm and cool halves of the wheel. The nearest named color is Blueberry (#464196), ΔE 0.031 away. White text reads best on it, at 8.33:1.
| Hue family | Purples |
| Lightness | dark (44%) |
| Chroma | vivid (0.147) |
| Temperature | in between |
| Nearest name | Blueberry (#464196) |
| Black text | 2.51:1 |
| White text | 8.33:1 |
Values
| HEX | #573C9A |
| RGB | rgb(87, 60, 154) |
| HSL | hsl(257, 44%, 42%) |
| OKLCH | oklch(43.8% 0.147 292.5) |
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 #573C9A | 8.33:1 | AAA | Lc -93.0 | Preferred for body text |
| Black text on #573C9A | 2.51:1 | Fails | Lc 15.6 | Dividers and decoration only |
| #573C9A text on white | 8.33:1 | AAA | Lc 88.4 | Fine for body text |
| #573C9A text on black | 2.51:1 | Fails | Lc -13.8 | 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
#F5F4FD
oklch(97% 0.012 291.3)
-
Step 100
100
#EAE7FA
oklch(93.6% 0.026 293.1)
-
Step 200
200
#D9D4F7
oklch(88.5% 0.048 291.9)
-
Step 300
300
#C2B7F4
oklch(81% 0.086 292.6)
-
Step 400
400
#A48FEE
oklch(70.7% 0.137 292.7)
-
Step 500
500
#8F70E8
oklch(63.1% 0.174 292.6)
-
Step 600
600
#7A54D6
oklch(55.5% 0.19 292.6)
-
Step 700
700
#6744BA
oklch(49.1% 0.177 292.3)
-
Step 800
800 (this color)
#573C9A
oklch(43.8% 0.147 292.5)
-
Step 900
900
#453278
oklch(37.7% 0.115 292.5)
-
Step 950
950
#281E46
oklch(27% 0.072 292.4)
#573C9A 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) | #004F9D | 0.093 |
| Deuteranopia (no green cones) | #014C98 | 0.093 |
| Tritanopia (no blue cones) | #445165 | 0.118 |
| Achromatopsia (no color) | #4E4E4E | 0.147 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573C9A
#573C9A
oklch(43.8% 0.147 292.5)
- #535700
#535700
oklch(43.8% 0.098 112.8)
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 #573C9A, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blueberry #464196 ΔE 0.031
- Rebecca Purple #663399 ΔE 0.032
- Dark Slate Blue #483D8B ΔE 0.036
- Twilight #4E518B ΔE 0.063
- Blue With A Hint Of Purple #533CC6 ΔE 0.071
- Bluey Purple #6241C7 ΔE 0.075
- Chrysanthemum #560BAD ΔE 0.077
- Blurple #5539CC ΔE 0.080
Use #573C9A 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.