#577FD4#577FD4

#577FD4 is a mid, vivid blue. Relative luminance 0.220; OKLCH L 60.7% C 0.137 H 263.8°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#577FD4
RGB	rgb(87, 127, 212)
HSL	hsl(221, 59%, 59%)
HSV	hsv(221, 59%, 83%)
CMYK	cmyk(59%, 40.1%, 0%, 16.9%)
CIE-LAB	lab(53.98, 11.73, -47.99)
CIE-LCH	lch(53.98, 49.40, 283.74°)
OKLab	oklab(60.72% -0.0149 -0.1364)
OKLCH	oklch(60.72% 0.137 263.8)
XYZ	xyz(23.3994, 21.9565, 65.2795)
Luminance	0.2196 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FD4 #D4AC57

analogous

#57BDD4 #577FD4 #6D57D4

triadic

#577FD4 #D4577F #7FD457

tetradic

#577FD4 #D457BD #D4AC57 #57D46D

square

#577FD4 #D457BD #D4AC57 #57D46D

split-complementary

#577FD4 #D46D57 #BDD457

monochromatic

#24458D #305EBD #577FD4 #88A4E0 #B8C9ED

Accessibility & contrast

On white

3.89

#577FD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#577FD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FD4

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FD4	#FFFFFF	#000000	##000000
##577FD4	1.00	3.89	5.39	5.39
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A87D7

Deuteranopia (green-blind)

#4A7CD2

Tritanopia (blue-blind)

#00929F

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577fd4;
/* rgb */ color: rgb(87, 127, 212);
/* oklch */ color: oklch(60.7% 0.137 263.8);

Tailwind

colors: {
  custom: {
    50: '#90a3e1',
    500: '#577fd4',
    950: '#000000',
  },
}

SCSS

$custom: #577fd4;
$custom-light: #90a3e1;
$custom-dark: #000000;

JSON

{
  "hex": "#577fd4",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 212
  },
  "hsl": {
    "h": 220.8,
    "s": 59.242,
    "l": 58.627
  },
  "oklch": {
    "l": 0.60715,
    "c": 0.13717,
    "h": 263.8
  },
  "luminance": 0.21958
}

Semantic roles & 50–950 ramp

primary

#577FD4

secondary

#DCCCAB

accent

#B045E2

background

#F9FAFD

surface

#F2F3FB

border

#CCCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #577FD4

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

Preview Lab → · Contrast checker → · Palette generator →