#577AB8#577AB8

#577AB8 is a mid, moderate blue. Relative luminance 0.194; OKLCH L 58.1% C 0.104 H 261.3°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#577AB8
RGB	rgb(87, 122, 184)
HSL	hsl(218, 41%, 53%)
HSV	hsv(218, 53%, 72%)
CMYK	cmyk(52.7%, 33.7%, 0%, 27.8%)
CIE-LAB	lab(51.16, 5.62, -36.48)
CIE-LCH	lch(51.16, 36.91, 278.76°)
OKLab	oklab(58.06% -0.0158 -0.1028)
OKLCH	oklch(58.06% 0.104 261.3)
XYZ	xyz(19.5388, 19.4046, 48.0539)
Luminance	0.1941 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AB8 #B89557

analogous

#57AAB8 #577AB8 #6457B8

triadic

#577AB8 #B8577A #7AB857

tetradic

#577AB8 #B857AA #B89557 #57B864

square

#577AB8 #B857AA #B89557 #57B864

split-complementary

#577AB8 #B86457 #AAB857

monochromatic

#2C4268 #3E5D93 #577AB8 #829CCA #ADBEDC

Accessibility & contrast

On white

4.30

#577AB8 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#577AB8 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AB8

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AB8	#FFFFFF	#000000	##000000
##577AB8	1.00	4.30	4.88	4.88
#FFFFFF	4.30	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#627FBB

Deuteranopia (green-blind)

#5676B7

Tritanopia (blue-blind)

#268890

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #577ab8;
/* rgb */ color: rgb(87, 122, 184);
/* oklch */ color: oklch(58.1% 0.104 261.3);

Tailwind

colors: {
  custom: {
    50: '#8ca0cd',
    500: '#577ab8',
    950: '#000000',
  },
}

SCSS

$custom: #577ab8;
$custom-light: #8ca0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#577ab8",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 184
  },
  "hsl": {
    "h": 218.351,
    "s": 40.586,
    "l": 53.137
  },
  "oklch": {
    "l": 0.58059,
    "c": 0.10403,
    "h": 261.3
  },
  "luminance": 0.19406
}

Semantic roles & 50–950 ramp

primary

#577AB8

secondary

#CABBA0

accent

#A557D0

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0D0E13

muted

#7D7E82

Preview Lab

Preview with #577AB8

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

Preview Lab → · Contrast checker → · Palette generator →