#577FDD#577FDD

#577FDD is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.3% C 0.150 H 265.0°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#577FDD
RGB	rgb(87, 127, 221)
HSL	hsl(222, 66%, 60%)
HSV	hsv(222, 61%, 87%)
CMYK	cmyk(60.6%, 42.5%, 0%, 13.3%)
CIE-LAB	lab(54.47, 14.73, -52.27)
CIE-LCH	lch(54.47, 54.31, 285.74°)
OKLab	oklab(61.25% -0.0131 -0.1489)
OKLCH	oklch(61.25% 0.15 265)
XYZ	xyz(24.5665, 22.4233, 71.4261)
Luminance	0.2243 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FDD #DDB557

analogous

#57C2DD #577FDD #7257DD

triadic

#577FDD #DD577F #7FDD57

tetradic

#577FDD #DD57C2 #DDB557 #57DD72

square

#577FDD #DD57C2 #DDB557 #57DD72

split-complementary

#577FDD #DD7257 #C2DD57

monochromatic

#1F449A #2A5ACD #577FDD #8AA6E7 #BDCDF2

Accessibility & contrast

On white

3.83

#577FDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#577FDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FDD

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FDD	#FFFFFF	#000000	##000000
##577FDD	1.00	3.83	5.49	5.49
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5589E1

Deuteranopia (green-blind)

#417DDB

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #577fdd;
/* rgb */ color: rgb(87, 127, 221);
/* oklch */ color: oklch(61.3% 0.150 265.0);

Tailwind

colors: {
  custom: {
    50: '#91a3e8',
    500: '#577fdd',
    950: '#000000',
  },
}

SCSS

$custom: #577fdd;
$custom-light: #91a3e8;
$custom-dark: #000000;

JSON

{
  "hex": "#577fdd",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 221
  },
  "hsl": {
    "h": 222.09,
    "s": 66.337,
    "l": 60.392
  },
  "oklch": {
    "l": 0.61254,
    "c": 0.14951,
    "h": 265
  },
  "luminance": 0.22425
}

Semantic roles & 50–950 ramp

primary

#577FDD

secondary

#E1D2AE

accent

#9817CE

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #577FDD

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

Preview Lab → · Contrast checker → · Palette generator →