#573BD9
Closest named color: Blurple (#5539CC). oklch(49% 0.226 282.3), rgb(87, 59, 217).
Aa
White text reads best on this color (6.92:1).
About this color
#573BD9 is a medium-dark, vivid purple. In OKLCH its lightness is 49%, its chroma 0.226 and its hue 282°. Its hue sits on the cool side of the wheel. The nearest named color is Blurple (#5539CC), ΔE 0.021 away. White text reads best on it, at 6.92:1.
| Hue family | Purples |
| Lightness | medium-dark (49%) |
| Chroma | vivid (0.226) |
| Temperature | cool |
| Nearest name | Blurple (#5539CC) |
| Black text | 3.03:1 |
| White text | 6.92:1 |
Values
| HEX | #573BD9 |
| RGB | rgb(87, 59, 217) |
| HSL | hsl(251, 68%, 54%) |
| OKLCH | oklch(49% 0.226 282.3) |
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 #573BD9 | 6.92:1 | AA | Lc -88.1 | Fine for body text |
| Black text on #573BD9 | 3.03:1 | AA large text | Lc 21.0 | Dividers and decoration only |
| #573BD9 text on white | 6.92:1 | AA | Lc 83.1 | Fine for body text |
| #573BD9 text on black | 3.03:1 | AA large text | Lc -18.9 | Dividers and decoration only |
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 700.
-
Step 50
50
#F4F4FF
oklch(97% 0.015 286.1)
-
Step 100
100
#E6E8FF
oklch(93.6% 0.031 281.8)
-
Step 200
200
#D3D5FF
oklch(88.5% 0.058 283)
-
Step 300
300
#B6B9FF
oklch(80.9% 0.099 282.1)
-
Step 400
400
#9391FF
oklch(70.6% 0.158 282.4)
-
Step 500
500
#7B71FF
oklch(63.1% 0.204 282)
-
Step 600
600
#684DF9
oklch(55.7% 0.242 282.3)
-
Step 700
700 (this color)
#573BD9
oklch(49% 0.226 282.3)
-
Step 800
800
#4733AF
oklch(42.7% 0.186 282.5)
-
Step 900
900
#3A2F8B
oklch(37.7% 0.146 282.2)
-
Step 950
950
#221D51
oklch(27.1% 0.092 282.7)
#573BD9 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) | #005FDE | 0.092 |
| Deuteranopia (no green cones) | #0054D6 | 0.082 |
| Tritanopia (no blue cones) | #006787 | 0.187 |
| Achromatopsia (no color) | #5A5A5A | 0.227 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #573BD9
#573BD9
oklch(49% 0.226 282.3)
- #6C6200
#6C6200
oklch(49% 0.103 102.5)
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 #573BD9, closest first.
No curated palette has a color within ΔE 0.04 of #573BD9.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Blurple #5539CC ΔE 0.021
- Purpley Blue #5F34E7 ΔE 0.025
- Blue With A Hint Of Purple #533CC6 ΔE 0.030
- Burple #6832E3 ΔE 0.033
- Bluey Purple #6241C7 ΔE 0.037
- Purple Blue #5D21D0 ΔE 0.041
- Majorelle Blue #3F37C9 ΔE 0.047
- Purply Blue #661AEE ΔE 0.050
Use #573BD9 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.