#577ED1#577ED1

#577ED1 is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.3% C 0.134 H 263.8°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#577ED1
RGB	rgb(87, 126, 209)
HSL	hsl(221, 57%, 58%)
HSV	hsv(221, 58%, 82%)
CMYK	cmyk(58.4%, 39.7%, 0%, 18%)
CIE-LAB	lab(53.55, 11.34, -46.98)
CIE-LCH	lch(53.55, 48.33, 283.57°)
OKLab	oklab(60.33% -0.0144 -0.1334)
OKLCH	oklch(60.33% 0.134 263.8)
XYZ	xyz(22.8960, 21.5495, 63.2621)
Luminance	0.2155 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ED1 #D1AA57

analogous

#57BBD1 #577ED1 #6D57D1

triadic

#577ED1 #D1577E #7ED157

tetradic

#577ED1 #D157BB #D1AA57 #57D16D

square

#577ED1 #D157BB #D1AA57 #57D16D

split-complementary

#577ED1 #D16D57 #BBD157

monochromatic

#254588 #325DB8 #577ED1 #87A3DE #B7C8EB

Accessibility & contrast

On white

3.95

#577ED1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#577ED1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ED1

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ED1	#FFFFFF	#000000	##000000
##577ED1	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B86D4

Deuteranopia (green-blind)

#4A7BCF

Tritanopia (blue-blind)

#00909D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577ed1;
/* rgb */ color: rgb(87, 126, 209);
/* oklch */ color: oklch(60.3% 0.134 263.8);

Tailwind

colors: {
  custom: {
    50: '#90a3df',
    500: '#577ed1',
    950: '#000000',
  },
}

SCSS

$custom: #577ed1;
$custom-light: #90a3df;
$custom-dark: #000000;

JSON

{
  "hex": "#577ed1",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 209
  },
  "hsl": {
    "h": 220.82,
    "s": 57.009,
    "l": 58.039
  },
  "oklch": {
    "l": 0.60326,
    "c": 0.13421,
    "h": 263.8
  },
  "luminance": 0.21551
}

Semantic roles & 50–950 ramp

primary

#577ED1

secondary

#DACBAA

accent

#AF48E0

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #577ED1

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

Preview Lab → · Contrast checker → · Palette generator →