#577ED0#577ED0

#577ED0 is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.3% C 0.133 H 263.7°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#577ED0
RGB	rgb(87, 126, 208)
HSL	hsl(221, 56%, 58%)
HSV	hsv(221, 58%, 82%)
CMYK	cmyk(58.2%, 39.4%, 0%, 18.4%)
CIE-LAB	lab(53.49, 11.01, -46.50)
CIE-LCH	lch(53.49, 47.79, 283.32°)
OKLab	oklab(60.27% -0.0146 -0.132)
OKLCH	oklch(60.27% 0.133 263.7)
XYZ	xyz(22.7726, 21.5001, 62.6122)
Luminance	0.2150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ED0 #D0A957

analogous

#57BBD0 #577ED0 #6C57D0

triadic

#577ED0 #D0577E #7ED057

tetradic

#577ED0 #D057BB #D0A957 #57D06C

square

#577ED0 #D057BB #D0A957 #57D06C

split-complementary

#577ED0 #D06C57 #BBD057

monochromatic

#264587 #335EB7 #577ED0 #87A3DD #B7C7EB

Accessibility & contrast

On white

3.96

#577ED0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#577ED0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ED0

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ED0	#FFFFFF	#000000	##000000
##577ED0	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B86D3

Deuteranopia (green-blind)

#4B7BCE

Tritanopia (blue-blind)

#00909D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577ed0;
/* rgb */ color: rgb(87, 126, 208);
/* oklch */ color: oklch(60.3% 0.133 263.7);

Tailwind

colors: {
  custom: {
    50: '#90a3df',
    500: '#577ed0',
    950: '#000000',
  },
}

SCSS

$custom: #577ed0;
$custom-light: #90a3df;
$custom-dark: #000000;

JSON

{
  "hex": "#577ed0",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 208
  },
  "hsl": {
    "h": 220.661,
    "s": 56.279,
    "l": 57.843
  },
  "oklch": {
    "l": 0.60268,
    "c": 0.13283,
    "h": 263.7
  },
  "luminance": 0.21502
}

Semantic roles & 50–950 ramp

primary

#577ED0

secondary

#DACAA9

accent

#AF48E0

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #577ED0

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

Preview Lab → · Contrast checker → · Palette generator →