#577CBF#577CBF

#577CBF is a mid, moderate blue. Relative luminance 0.202; OKLCH L 58.9% C 0.112 H 261.6°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#577CBF
RGB	rgb(87, 124, 191)
HSL	hsl(219, 45%, 55%)
HSV	hsv(219, 54%, 75%)
CMYK	cmyk(54.5%, 35.1%, 0%, 25.1%)
CIE-LAB	lab(52.06, 6.66, -39.08)
CIE-LCH	lch(52.06, 39.64, 279.67°)
OKLab	oklab(58.88% -0.0163 -0.1103)
OKLCH	oklch(58.88% 0.112 261.6)
XYZ	xyz(20.5389, 20.2016, 52.0971)
Luminance	0.2020 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CBF #BF9A57

analogous

#57B0BF #577CBF #6657BF

triadic

#577CBF #BF577C #7CBF57

tetradic

#577CBF #BF57B0 #BF9A57 #57BF66

square

#577CBF #BF57B0 #BF9A57 #57BF66

split-complementary

#577CBF #BF6657 #B0BF57

monochromatic

#2B4471 #3C5E9D #577CBF #839FD0 #B0C1E1

Accessibility & contrast

On white

4.17

#577CBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#577CBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CBF

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CBF	#FFFFFF	#000000	##000000
##577CBF	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6181C2

Deuteranopia (green-blind)

#5478BE

Tritanopia (blue-blind)

#1B8B94

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577cbf;
/* rgb */ color: rgb(87, 124, 191);
/* oklch */ color: oklch(58.9% 0.112 261.6);

Tailwind

colors: {
  custom: {
    50: '#8da1d2',
    500: '#577cbf',
    950: '#000000',
  },
}

SCSS

$custom: #577cbf;
$custom-light: #8da1d2;
$custom-dark: #000000;

JSON

{
  "hex": "#577cbf",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 191
  },
  "hsl": {
    "h": 218.654,
    "s": 44.828,
    "l": 54.51
  },
  "oklch": {
    "l": 0.58877,
    "c": 0.11155,
    "h": 261.6
  },
  "luminance": 0.20203
}

Semantic roles & 50–950 ramp

primary

#577CBF

secondary

#CFBFA3

accent

#A753D5

background

#F9F9FC

surface

#F1F2F9

border

#CBCCD2

text

#0D0E14

muted

#7E7E82

Preview Lab

Preview with #577CBF

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

Preview Lab → · Contrast checker → · Palette generator →