#577AD4#577AD4

#577AD4 is a mid, vivid blue. Relative luminance 0.207; OKLCH L 59.7% C 0.143 H 266.2°. Best body text is #000000 at 5.14:1 contrast (WCAG AA passes).

Color values

HEX	#577AD4
RGB	rgb(87, 122, 212)
HSL	hsl(223, 59%, 59%)
HSV	hsv(223, 59%, 83%)
CMYK	cmyk(59%, 42.5%, 0%, 16.9%)
CIE-LAB	lab(52.62, 14.77, -50.16)
CIE-LCH	lch(52.62, 52.29, 286.41°)
OKLab	oklab(59.66% -0.0095 -0.1428)
OKLCH	oklch(59.66% 0.143 266.2)
XYZ	xyz(22.7696, 20.6969, 65.0696)
Luminance	0.2070 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AD4 #D4B157

analogous

#57B8D4 #577AD4 #7257D4

triadic

#577AD4 #D4577A #7AD457

tetradic

#577AD4 #D457B8 #D4B157 #57D472

square

#577AD4 #D457B8 #D4B157 #57D472

split-complementary

#577AD4 #D47257 #B8D457

monochromatic

#24418D #3058BD #577AD4 #88A1E0 #B8C7ED

Accessibility & contrast

On white

4.09

#577AD4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.14

#577AD4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AD4

5.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AD4	#FFFFFF	#000000	##000000
##577AD4	1.00	4.09	5.14	5.14
#FFFFFF	4.09	1.00	21.00	21.00
#000000	5.14	21.00	1.00	1.00
##000000	5.14	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5284D7

Deuteranopia (green-blind)

#4178D2

Tritanopia (blue-blind)

#008E9D

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577ad4;
/* rgb */ color: rgb(87, 122, 212);
/* oklch */ color: oklch(59.7% 0.143 266.2);

Tailwind

colors: {
  custom: {
    50: '#90a0e2',
    500: '#577ad4',
    950: '#000000',
  },
}

SCSS

$custom: #577ad4;
$custom-light: #90a0e2;
$custom-dark: #000000;

JSON

{
  "hex": "#577ad4",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 212
  },
  "hsl": {
    "h": 223.2,
    "s": 59.242,
    "l": 58.627
  },
  "oklch": {
    "l": 0.59663,
    "c": 0.1431,
    "h": 266.2
  },
  "luminance": 0.20699
}

Semantic roles & 50–950 ramp

primary

#577AD4

secondary

#DCCEAB

accent

#B645E2

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577AD4

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

Preview Lab → · Contrast checker → · Palette generator →