#577BDE#577BDE

#577BDE is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.5% C 0.156 H 266.7°. Best body text is #000000 at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#577BDE
RGB	rgb(87, 123, 222)
HSL	hsl(224, 67%, 61%)
HSV	hsv(224, 61%, 87%)
CMYK	cmyk(60.8%, 44.6%, 0%, 12.9%)
CIE-LAB	lab(53.45, 17.51, -54.46)
CIE-LCH	lch(53.45, 57.21, 287.82°)
OKLab	oklab(60.49% -0.0089 -0.1554)
OKLCH	oklch(60.49% 0.156 266.7)
XYZ	xyz(24.1938, 21.4640, 71.9611)
Luminance	0.2147 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BDE #DEBA57

analogous

#57BEDE #577BDE #7657DE

triadic

#577BDE #DE577B #7BDE57

tetradic

#577BDE #DE57BE #DEBA57 #57DE76

square

#577BDE #DE57BE #DEBA57 #57DE76

split-complementary

#577BDE #DE7657 #BEDE57

monochromatic

#1F409C #2955CF #577BDE #8AA3E8 #BDCBF2

Accessibility & contrast

On white

3.97

#577BDE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.29

#577BDE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BDE

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BDE	#FFFFFF	#000000	##000000
##577BDE	1.00	3.97	5.29	5.29
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.29	21.00	1.00	1.00
##000000	5.29	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D86E2

Deuteranopia (green-blind)

#387ADC

Tritanopia (blue-blind)

#0091A2

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577bde;
/* rgb */ color: rgb(87, 123, 222);
/* oklch */ color: oklch(60.5% 0.156 266.7);

Tailwind

colors: {
  custom: {
    50: '#92a0e9',
    500: '#577bde',
    950: '#000000',
  },
}

SCSS

$custom: #577bde;
$custom-light: #92a0e9;
$custom-dark: #000000;

JSON

{
  "hex": "#577bde",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 222
  },
  "hsl": {
    "h": 224,
    "s": 67.164,
    "l": 60.588
  },
  "oklch": {
    "l": 0.6049,
    "c": 0.15566,
    "h": 266.7
  },
  "luminance": 0.21466
}

Semantic roles & 50–950 ramp

primary

#577BDE

secondary

#E2D4AF

accent

#9E16CF

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577BDE

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

Preview Lab → · Contrast checker → · Palette generator →