#577BC0#577BC0

#577BC0 is a mid, moderate blue. Relative luminance 0.200; OKLCH L 58.7% C 0.114 H 262.5°. Best body text is #000000 at 5.00:1 contrast (WCAG AA passes).

Color values

HEX	#577BC0
RGB	rgb(87, 123, 192)
HSL	hsl(219, 45%, 55%)
HSV	hsv(219, 55%, 75%)
CMYK	cmyk(54.7%, 35.9%, 0%, 24.7%)
CIE-LAB	lab(51.83, 7.59, -40.01)
CIE-LCH	lch(51.83, 40.73, 280.74°)
OKLab	oklab(58.71% -0.0149 -0.1131)
OKLCH	oklch(58.71% 0.114 262.5)
XYZ	xyz(20.5246, 19.9964, 52.6371)
Luminance	0.2000 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BC0 #C09C57

analogous

#57AFC0 #577BC0 #6857C0

triadic

#577BC0 #C0577B #7BC057

tetradic

#577BC0 #C057AF #C09C57 #57C068

square

#577BC0 #C057AF #C09C57 #57C068

split-complementary

#577BC0 #C06857 #AFC057

monochromatic

#2B4372 #3B5D9E #577BC0 #849ED1 #B0C1E1

Accessibility & contrast

On white

4.20

#577BC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.00

#577BC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BC0

5.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BC0	#FFFFFF	#000000	##000000
##577BC0	1.00	4.20	5.00	5.00
#FFFFFF	4.20	1.00	21.00	21.00
#000000	5.00	21.00	1.00	1.00
##000000	5.00	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F81C3

Deuteranopia (green-blind)

#5277BF

Tritanopia (blue-blind)

#1A8A94

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577bc0;
/* rgb */ color: rgb(87, 123, 192);
/* oklch */ color: oklch(58.7% 0.114 262.5);

Tailwind

colors: {
  custom: {
    50: '#8da0d3',
    500: '#577bc0',
    950: '#000000',
  },
}

SCSS

$custom: #577bc0;
$custom-light: #8da0d3;
$custom-dark: #000000;

JSON

{
  "hex": "#577bc0",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 192
  },
  "hsl": {
    "h": 219.429,
    "s": 45.455,
    "l": 54.706
  },
  "oklch": {
    "l": 0.58713,
    "c": 0.11407,
    "h": 262.5
  },
  "luminance": 0.19998
}

Semantic roles & 50–950 ramp

primary

#577BC0

secondary

#D0C0A3

accent

#A853D5

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577BC0

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

Preview Lab → · Contrast checker → · Palette generator →