#577AB0#577AB0

#577AB0 is a mid, moderate blue. Relative luminance 0.191; OKLCH L 57.6% C 0.093 H 258.8°. Best body text is #000000 at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#577AB0
RGB	rgb(87, 122, 176)
HSL	hsl(216, 36%, 52%)
HSV	hsv(216, 51%, 69%)
CMYK	cmyk(50.6%, 30.7%, 0%, 31%)
CIE-LAB	lab(50.78, 3.09, -32.46)
CIE-LCH	lch(50.78, 32.61, 275.44°)
OKLab	oklab(57.64% -0.018 -0.0911)
OKLCH	oklch(57.64% 0.093 258.8)
XYZ	xyz(18.7238, 19.0786, 43.7618)
Luminance	0.1908 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AB0 #B08D57

analogous

#57A7B0 #577AB0 #6157B0

triadic

#577AB0 #B0577A #7AB057

tetradic

#577AB0 #B057A7 #B08D57 #57B061

square

#577AB0 #B057A7 #B08D57 #57B061

split-complementary

#577AB0 #B06157 #A7B057

monochromatic

#2D4160 #415D89 #577AB0 #819BC4 #AABCD7

Accessibility & contrast

On white

4.36

#577AB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.82

#577AB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AB0

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AB0	#FFFFFF	#000000	##000000
##577AB0	1.00	4.36	4.82	4.82
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.82	21.00	1.00	1.00
##000000	4.82	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#657EB2

Deuteranopia (green-blind)

#5B75AF

Tritanopia (blue-blind)

#2E868D

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #577ab0;
/* rgb */ color: rgb(87, 122, 176);
/* oklch */ color: oklch(57.6% 0.093 258.8);

Tailwind

colors: {
  custom: {
    50: '#8ca0c8',
    500: '#577ab0',
    950: '#000000',
  },
}

SCSS

$custom: #577ab0;
$custom-light: #8ca0c8;
$custom-dark: #000000;

JSON

{
  "hex": "#577ab0",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 176
  },
  "hsl": {
    "h": 216.404,
    "s": 36.032,
    "l": 51.569
  },
  "oklch": {
    "l": 0.5764,
    "c": 0.09291,
    "h": 258.8
  },
  "luminance": 0.1908
}

Semantic roles & 50–950 ramp

primary

#577AB0

secondary

#C5B69E

accent

#A05CCC

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #577AB0

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

Preview Lab → · Contrast checker → · Palette generator →