#577AC0#577AC0

#577AC0 is a mid, moderate blue. Relative luminance 0.198; OKLCH L 58.5% C 0.115 H 263.1°. Best body text is #000000 at 4.95:1 contrast (WCAG AA passes).

Color values

HEX	#577AC0
RGB	rgb(87, 122, 192)
HSL	hsl(220, 45%, 55%)
HSV	hsv(220, 55%, 75%)
CMYK	cmyk(54.7%, 36.5%, 0%, 24.7%)
CIE-LAB	lab(51.55, 8.19, -40.46)
CIE-LCH	lch(51.55, 41.28, 281.45°)
OKLab	oklab(58.5% -0.0138 -0.1144)
OKLCH	oklch(58.5% 0.115 263.1)
XYZ	xyz(20.4012, 19.7495, 52.5959)
Luminance	0.1975 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AC0 #C09D57

analogous

#57AFC0 #577AC0 #6957C0

triadic

#577AC0 #C0577A #7AC057

tetradic

#577AC0 #C057AF #C09D57 #57C069

square

#577AC0 #C057AF #C09D57 #57C069

split-complementary

#577AC0 #C06957 #AFC057

monochromatic

#2B4272 #3B5C9E #577AC0 #849DD1 #B0C0E1

Accessibility & contrast

On white

4.24

#577AC0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.95

#577AC0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AC0

4.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AC0	#FFFFFF	#000000	##000000
##577AC0	1.00	4.24	4.95	4.95
#FFFFFF	4.24	1.00	21.00	21.00
#000000	4.95	21.00	1.00	1.00
##000000	4.95	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E80C3

Deuteranopia (green-blind)

#5176BE

Tritanopia (blue-blind)

#1A8994

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #577ac0;
/* rgb */ color: rgb(87, 122, 192);
/* oklch */ color: oklch(58.5% 0.115 263.1);

Tailwind

colors: {
  custom: {
    50: '#8da0d3',
    500: '#577ac0',
    950: '#000000',
  },
}

SCSS

$custom: #577ac0;
$custom-light: #8da0d3;
$custom-dark: #000000;

JSON

{
  "hex": "#577ac0",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 192
  },
  "hsl": {
    "h": 220,
    "s": 45.455,
    "l": 54.706
  },
  "oklch": {
    "l": 0.58496,
    "c": 0.11521,
    "h": 263.1
  },
  "luminance": 0.19751
}

Semantic roles & 50–950 ramp

primary

#577AC0

secondary

#D0C1A3

accent

#AA53D5

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577AC0

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

Preview Lab → · Contrast checker → · Palette generator →