#577CC8#577CC8

#577CC8 is a mid, vivid blue. Relative luminance 0.206; OKLCH L 59.4% C 0.124 H 263.4°. Best body text is #000000 at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#577CC8
RGB	rgb(87, 124, 200)
HSL	hsl(220, 51%, 56%)
HSV	hsv(220, 57%, 78%)
CMYK	cmyk(56.5%, 38%, 0%, 21.6%)
CIE-LAB	lab(52.52, 9.59, -43.50)
CIE-LCH	lch(52.52, 44.54, 282.43°)
OKLab	oklab(59.38% -0.0142 -0.1232)
OKLCH	oklch(59.38% 0.124 263.4)
XYZ	xyz(21.5599, 20.6100, 57.4744)
Luminance	0.2061 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CC8 #C8A357

analogous

#57B5C8 #577CC8 #6B57C8

triadic

#577CC8 #C8577C #7CC857

tetradic

#577CC8 #C857B5 #C8A357 #57C86B

square

#577CC8 #C857B5 #C8A357 #57C86B

split-complementary

#577CC8 #C86B57 #B5C857

monochromatic

#29447C #385DAA #577CC8 #85A0D7 #B3C4E6

Accessibility & contrast

On white

4.10

#577CC8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.12

#577CC8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CC8

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CC8	#FFFFFF	#000000	##000000
##577CC8	1.00	4.10	5.12	5.12
#FFFFFF	4.10	1.00	21.00	21.00
#000000	5.12	21.00	1.00	1.00
##000000	5.12	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D83CB

Deuteranopia (green-blind)

#4E79C6

Tritanopia (blue-blind)

#038D98

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577cc8;
/* rgb */ color: rgb(87, 124, 200);
/* oklch */ color: oklch(59.4% 0.124 263.4);

Tailwind

colors: {
  custom: {
    50: '#8ea1d9',
    500: '#577cc8',
    950: '#000000',
  },
}

SCSS

$custom: #577cc8;
$custom-light: #8ea1d9;
$custom-dark: #000000;

JSON

{
  "hex": "#577cc8",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 200
  },
  "hsl": {
    "h": 220.354,
    "s": 50.673,
    "l": 56.275
  },
  "oklch": {
    "l": 0.59379,
    "c": 0.12406,
    "h": 263.4
  },
  "luminance": 0.20612
}

Semantic roles & 50–950 ramp

primary

#577CC8

secondary

#D5C5A6

accent

#AC4EDA

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577CC8

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

Preview Lab → · Contrast checker → · Palette generator →