#577CBD#577CBD

#577CBD is a mid, moderate blue. Relative luminance 0.201; OKLCH L 58.8% C 0.109 H 261.1°. Best body text is #000000 at 5.02:1 contrast (WCAG AA passes).

Color values

HEX	#577CBD
RGB	rgb(87, 124, 189)
HSL	hsl(218, 44%, 54%)
HSV	hsv(218, 54%, 74%)
CMYK	cmyk(54%, 34.4%, 0%, 25.9%)
CIE-LAB	lab(51.97, 6.02, -38.08)
CIE-LCH	lch(51.97, 38.56, 278.98°)
OKLab	oklab(58.77% -0.0168 -0.1075)
OKLCH	oklch(58.77% 0.109 261.1)
XYZ	xyz(20.3203, 20.1141, 50.9459)
Luminance	0.2012 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CBD #BD9857

analogous

#57AFBD #577CBD #6557BD

triadic

#577CBD #BD577C #7CBD57

tetradic

#577CBD #BD57AF #BD9857 #57BD65

square

#577CBD #BD57AF #BD9857 #57BD65

split-complementary

#577CBD #BD6557 #AFBD57

monochromatic

#2B446E #3D5F9A #577CBD #839ECE #AFC1E0

Accessibility & contrast

On white

4.18

#577CBD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.02

#577CBD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CBD

5.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CBD	#FFFFFF	#000000	##000000
##577CBD	1.00	4.18	5.02	5.02
#FFFFFF	4.18	1.00	21.00	21.00
#000000	5.02	21.00	1.00	1.00
##000000	5.02	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6281C0

Deuteranopia (green-blind)

#5678BC

Tritanopia (blue-blind)

#1E8A94

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577cbd;
/* rgb */ color: rgb(87, 124, 189);
/* oklch */ color: oklch(58.8% 0.109 261.1);

Tailwind

colors: {
  custom: {
    50: '#8da1d1',
    500: '#577cbd',
    950: '#000000',
  },
}

SCSS

$custom: #577cbd;
$custom-light: #8da1d1;
$custom-dark: #000000;

JSON

{
  "hex": "#577cbd",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 189
  },
  "hsl": {
    "h": 218.235,
    "s": 43.59,
    "l": 54.118
  },
  "oklch": {
    "l": 0.58768,
    "c": 0.10877,
    "h": 261.1
  },
  "luminance": 0.20116
}

Semantic roles & 50–950 ramp

primary

#577CBD

secondary

#CEBEA2

accent

#A554D3

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0E14

muted

#7E7E82

Preview Lab

Preview with #577CBD

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

Preview Lab → · Contrast checker → · Palette generator →