#577CC4#577CC4

#577CC4 is a mid, moderate blue. Relative luminance 0.204; OKLCH L 59.2% C 0.118 H 262.7°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#577CC4
RGB	rgb(87, 124, 196)
HSL	hsl(220, 48%, 55%)
HSV	hsv(220, 56%, 77%)
CMYK	cmyk(55.6%, 36.7%, 0%, 23.1%)
CIE-LAB	lab(52.31, 8.28, -41.54)
CIE-LCH	lch(52.31, 42.36, 281.28°)
OKLab	oklab(59.15% -0.0151 -0.1175)
OKLCH	oklch(59.15% 0.119 262.7)
XYZ	xyz(21.0985, 20.4254, 55.0445)
Luminance	0.2043 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CC4 #C49F57

analogous

#57B3C4 #577CC4 #6857C4

triadic

#577CC4 #C4577C #7CC457

tetradic

#577CC4 #C457B3 #C49F57 #57C468

square

#577CC4 #C457B3 #C49F57 #57C468

split-complementary

#577CC4 #C46857 #B3C457

monochromatic

#2A4477 #3A5EA4 #577CC4 #849FD4 #B2C3E4

Accessibility & contrast

On white

4.13

#577CC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#577CC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CC4

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CC4	#FFFFFF	#000000	##000000
##577CC4	1.00	4.13	5.09	5.09
#FFFFFF	4.13	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F82C7

Deuteranopia (green-blind)

#5178C2

Tritanopia (blue-blind)

#118C97

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577cc4;
/* rgb */ color: rgb(87, 124, 196);
/* oklch */ color: oklch(59.2% 0.118 262.7);

Tailwind

colors: {
  custom: {
    50: '#8ea1d6',
    500: '#577cc4',
    950: '#000000',
  },
}

SCSS

$custom: #577cc4;
$custom-light: #8ea1d6;
$custom-dark: #000000;

JSON

{
  "hex": "#577cc4",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 196
  },
  "hsl": {
    "h": 219.633,
    "s": 48.018,
    "l": 55.49
  },
  "oklch": {
    "l": 0.59153,
    "c": 0.1185,
    "h": 262.7
  },
  "luminance": 0.20427
}

Semantic roles & 50–950 ramp

primary

#577CC4

secondary

#D2C3A5

accent

#AA50D8

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577CC4

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

Preview Lab → · Contrast checker → · Palette generator →