#577CC5#577CC5

#577CC5 is a mid, moderate blue. Relative luminance 0.205; OKLCH L 59.2% C 0.120 H 262.9°. Best body text is #000000 at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#577CC5
RGB	rgb(87, 124, 197)
HSL	hsl(220, 49%, 56%)
HSV	hsv(220, 56%, 77%)
CMYK	cmyk(55.8%, 37.1%, 0%, 22.7%)
CIE-LAB	lab(52.37, 8.61, -42.03)
CIE-LCH	lch(52.37, 42.90, 281.58°)
OKLab	oklab(59.21% -0.0149 -0.119)
OKLCH	oklch(59.21% 0.12 262.9)
XYZ	xyz(21.2127, 20.4711, 55.6460)
Luminance	0.2047 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CC5 #C5A057

analogous

#57B3C5 #577CC5 #6957C5

triadic

#577CC5 #C5577C #7CC557

tetradic

#577CC5 #C557B3 #C5A057 #57C569

square

#577CC5 #C557B3 #C5A057 #57C569

split-complementary

#577CC5 #C56957 #B3C557

monochromatic

#294478 #395EA6 #577CC5 #849FD5 #B2C3E4

Accessibility & contrast

On white

4.12

#577CC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.09

#577CC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CC5

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CC5	#FFFFFF	#000000	##000000
##577CC5	1.00	4.12	5.09	5.09
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.09	21.00	1.00	1.00
##000000	5.09	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E82C8

Deuteranopia (green-blind)

#5078C3

Tritanopia (blue-blind)

#0E8C97

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577cc5;
/* rgb */ color: rgb(87, 124, 197);
/* oklch */ color: oklch(59.2% 0.120 262.9);

Tailwind

colors: {
  custom: {
    50: '#8ea1d7',
    500: '#577cc5',
    950: '#000000',
  },
}

SCSS

$custom: #577cc5;
$custom-light: #8ea1d7;
$custom-dark: #000000;

JSON

{
  "hex": "#577cc5",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 197
  },
  "hsl": {
    "h": 219.818,
    "s": 48.673,
    "l": 55.686
  },
  "oklch": {
    "l": 0.59209,
    "c": 0.11989,
    "h": 262.9
  },
  "luminance": 0.20473
}

Semantic roles & 50–950 ramp

primary

#577CC5

secondary

#D3C3A5

accent

#AA50D8

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577CC5

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

Preview Lab → · Contrast checker → · Palette generator →