#577BD7#577BD7

#577BD7 is a mid, vivid blue. Relative luminance 0.211; OKLCH L 60.1% C 0.146 H 266.1°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#577BD7
RGB	rgb(87, 123, 215)
HSL	hsl(223, 62%, 59%)
HSV	hsv(223, 60%, 84%)
CMYK	cmyk(59.5%, 42.8%, 0%, 15.7%)
CIE-LAB	lab(53.05, 15.16, -51.16)
CIE-LCH	lch(53.05, 53.36, 286.51°)
OKLab	oklab(60.06% -0.0101 -0.1457)
OKLCH	oklch(60.06% 0.146 266.1)
XYZ	xyz(23.2750, 21.0965, 67.1223)
Luminance	0.2110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BD7 #D7B357

analogous

#57BBD7 #577BD7 #7357D7

triadic

#577BD7 #D7577B #7BD757

tetradic

#577BD7 #D757BB #D7B357 #57D773

square

#577BD7 #D757BB #D7B357 #57D773

split-complementary

#577BD7 #D77357 #BBD757

monochromatic

#234291 #2E58C2 #577BD7 #88A2E3 #BAC9EF

Accessibility & contrast

On white

4.02

#577BD7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#577BD7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BD7

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BD7	#FFFFFF	#000000	##000000
##577BD7	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5285DB

Deuteranopia (green-blind)

#4079D5

Tritanopia (blue-blind)

#00909E

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #577bd7;
/* rgb */ color: rgb(87, 123, 215);
/* oklch */ color: oklch(60.1% 0.146 266.1);

Tailwind

colors: {
  custom: {
    50: '#91a0e4',
    500: '#577bd7',
    950: '#000000',
  },
}

SCSS

$custom: #577bd7;
$custom-light: #91a0e4;
$custom-dark: #000000;

JSON

{
  "hex": "#577bd7",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 215
  },
  "hsl": {
    "h": 223.125,
    "s": 61.538,
    "l": 59.216
  },
  "oklch": {
    "l": 0.60055,
    "c": 0.14605,
    "h": 266.1
  },
  "luminance": 0.21098
}

Semantic roles & 50–950 ramp

primary

#577BD7

secondary

#DED0AC

accent

#B743E5

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E15

muted

#7E7E84

Preview Lab

Preview with #577BD7

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

Preview Lab → · Contrast checker → · Palette generator →