#577EE4#577EE4

#577EE4 is a mid, vivid blue. Relative luminance 0.225; OKLCH L 61.5% C 0.160 H 266.1°. Best body text is #000000 at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#577EE4
RGB	rgb(87, 126, 228)
HSL	hsl(223, 72%, 62%)
HSV	hsv(223, 62%, 89%)
CMYK	cmyk(61.8%, 44.7%, 0%, 10.6%)
CIE-LAB	lab(54.60, 17.69, -55.99)
CIE-LCH	lch(54.60, 58.72, 287.54°)
OKLab	oklab(61.48% -0.0109 -0.1599)
OKLCH	oklch(61.48% 0.16 266.1)
XYZ	xyz(25.3901, 22.5471, 76.3978)
Luminance	0.2255 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EE4 #E4BD57

analogous

#57C5E4 #577EE4 #7757E4

triadic

#577EE4 #E4577E #7EE457

tetradic

#577EE4 #E457C5 #E4BD57 #57E477

square

#577EE4 #E457C5 #E4BD57 #57E477

split-complementary

#577EE4 #E47757 #C5E457

monochromatic

#1B41A6 #2356DB #577EE4 #8CA6EC #C0CFF5

Accessibility & contrast

On white

3.81

#577EE4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.51

#577EE4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EE4

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EE4	#FFFFFF	#000000	##000000
##577EE4	1.00	3.81	5.51	5.51
#FFFFFF	3.81	1.00	21.00	21.00
#000000	5.51	21.00	1.00	1.00
##000000	5.51	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D89E8

Deuteranopia (green-blind)

#377DE2

Tritanopia (blue-blind)

#0095A6

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #577ee4;
/* rgb */ color: rgb(87, 126, 228);
/* oklch */ color: oklch(61.5% 0.160 266.1);

Tailwind

colors: {
  custom: {
    50: '#93a2ed',
    500: '#577ee4',
    950: '#000000',
  },
}

SCSS

$custom: #577ee4;
$custom-light: #93a2ed;
$custom-dark: #000000;

JSON

{
  "hex": "#577ee4",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 228
  },
  "hsl": {
    "h": 223.404,
    "s": 72.308,
    "l": 61.765
  },
  "oklch": {
    "l": 0.61483,
    "c": 0.16023,
    "h": 266.1
  },
  "luminance": 0.22549
}

Semantic roles & 50–950 ramp

primary

#577EE4

secondary

#E6D7B1

accent

#9E11D4

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #577EE4

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

Preview Lab → · Contrast checker → · Palette generator →