#578EE9#578EE9

#578EE9 is a light, vivid blue. Relative luminance 0.273; OKLCH L 65.1% C 0.149 H 259.9°. Best body text is #000000 at 6.45:1 contrast (WCAG AA passes).

Color values

HEX	#578EE9
RGB	rgb(87, 142, 233)
HSL	hsl(217, 77%, 63%)
HSV	hsv(217, 63%, 91%)
CMYK	cmyk(62.7%, 39.1%, 0%, 8.6%)
CIE-LAB	lab(59.21, 9.73, -51.43)
CIE-LCH	lch(59.21, 52.35, 280.71°)
OKLab	oklab(65.12% -0.0259 -0.1463)
OKLCH	oklch(65.12% 0.149 259.9)
XYZ	xyz(28.3063, 27.2528, 80.8436)
Luminance	0.2726 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#578EE9 #E9B257

analogous

#57D7E9 #578EE9 #6957E9

triadic

#578EE9 #E9578E #8EE957

tetradic

#578EE9 #E957D7 #E9B257 #57E969

square

#578EE9 #E957D7 #E9B257 #57E969

split-complementary

#578EE9 #E96957 #D7E957

monochromatic

#1750AF #216AE2 #578EE9 #8DB2F0 #C3D7F7

Accessibility & contrast

On white

3.26

#578EE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

6.45

#578EE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #578EE9

6.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##578EE9	#FFFFFF	#000000	##000000
##578EE9	1.00	3.26	6.45	6.45
#FFFFFF	3.26	1.00	21.00	21.00
#000000	6.45	21.00	1.00	1.00
##000000	6.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6696ED

Deuteranopia (green-blind)

#5188E7

Tritanopia (blue-blind)

#00A3B0

Achromatopsia (no color)

#8E8E8E

Design tokens & code

CSS

--color: #578ee9;
/* rgb */ color: rgb(87, 142, 233);
/* oklch */ color: oklch(65.1% 0.149 259.9);

Tailwind

colors: {
  custom: {
    50: '#93aef0',
    500: '#578ee9',
    950: '#000000',
  },
}

SCSS

$custom: #578ee9;
$custom-light: #93aef0;
$custom-dark: #000000;

JSON

{
  "hex": "#578ee9",
  "rgb": {
    "r": 87,
    "g": 142,
    "b": 233
  },
  "hsl": {
    "h": 217.397,
    "s": 76.842,
    "l": 62.745
  },
  "oklch": {
    "l": 0.65123,
    "c": 0.14857,
    "h": 259.9
  },
  "luminance": 0.27255
}

Semantic roles & 50–950 ramp

primary

#578EE9

secondary

#E8D4B3

accent

#8C0CD9

background

#F9FAFE

surface

#F2F4FD

border

#CCCED5

text

#0E1017

muted

#7E7F85

Preview Lab

Preview with #578EE9

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →