#577AB2#577AB2

#577AB2 is a mid, moderate blue. Relative luminance 0.192; OKLCH L 57.7% C 0.096 H 259.5°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#577AB2
RGB	rgb(87, 122, 178)
HSL	hsl(217, 37%, 52%)
HSV	hsv(217, 51%, 70%)
CMYK	cmyk(51.1%, 31.5%, 0%, 30.2%)
CIE-LAB	lab(50.87, 3.72, -33.47)
CIE-LCH	lch(50.87, 33.68, 276.34°)
OKLab	oklab(57.74% -0.0174 -0.0941)
OKLCH	oklch(57.74% 0.096 259.5)
XYZ	xyz(18.9232, 19.1583, 44.8116)
Luminance	0.1916 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AB2 #B28F57

analogous

#57A8B2 #577AB2 #6257B2

triadic

#577AB2 #B2577A #7AB257

tetradic

#577AB2 #B257A8 #B28F57 #57B262

square

#577AB2 #B257A8 #B28F57 #57B262

split-complementary

#577AB2 #B26257 #A8B257

monochromatic

#2D4162 #405D8C #577AB2 #819BC5 #ABBCD8

Accessibility & contrast

On white

4.35

#577AB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#577AB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AB2

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AB2	#FFFFFF	#000000	##000000
##577AB2	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647EB4

Deuteranopia (green-blind)

#5975B1

Tritanopia (blue-blind)

#2C868E

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #577ab2;
/* rgb */ color: rgb(87, 122, 178);
/* oklch */ color: oklch(57.7% 0.096 259.5);

Tailwind

colors: {
  custom: {
    50: '#8ca0c9',
    500: '#577ab2',
    950: '#000000',
  },
}

SCSS

$custom: #577ab2;
$custom-light: #8ca0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#577ab2",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 178
  },
  "hsl": {
    "h": 216.923,
    "s": 37.143,
    "l": 51.961
  },
  "oklch": {
    "l": 0.57743,
    "c": 0.09567,
    "h": 259.5
  },
  "luminance": 0.1916
}

Semantic roles & 50–950 ramp

primary

#577AB2

secondary

#C6B79E

accent

#A15BCD

background

#F8F9FC

surface

#F0F2F8

border

#CBCCD1

text

#0C0E13

muted

#7D7E82

Preview Lab

Preview with #577AB2

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

Preview Lab → · Contrast checker → · Palette generator →