#577DDF#577DDF

#577DDF is a mid, vivid blue. Relative luminance 0.220; OKLCH L 61.0% C 0.155 H 266.0°. Best body text is #000000 at 5.40:1 contrast (WCAG AA passes).

Color values

HEX	#577DDF
RGB	rgb(87, 125, 223)
HSL	hsl(223, 68%, 61%)
HSV	hsv(223, 61%, 87%)
CMYK	cmyk(61%, 43.9%, 0%, 12.5%)
CIE-LAB	lab(54.05, 16.62, -54.08)
CIE-LCH	lch(54.05, 56.57, 287.09°)
OKLab	oklab(60.96% -0.0107 -0.1542)
OKLCH	oklch(60.96% 0.155 266)
XYZ	xyz(24.5788, 22.0191, 72.7526)
Luminance	0.2202 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577DDF #DFB957

analogous

#57C1DF #577DDF #7557DF

triadic

#577DDF #DF577D #7DDF57

tetradic

#577DDF #DF57C1 #DFB957 #57DF75

square

#577DDF #DF57C1 #DFB957 #57DF75

split-complementary

#577DDF #DF7557 #C1DF57

monochromatic

#1E429E #2857D1 #577DDF #8AA5E9 #BECDF3

Accessibility & contrast

On white

3.89

#577DDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.40

#577DDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577DDF

5.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577DDF	#FFFFFF	#000000	##000000
##577DDF	1.00	3.89	5.40	5.40
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.40	21.00	1.00	1.00
##000000	5.40	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5088E3

Deuteranopia (green-blind)

#3B7BDD

Tritanopia (blue-blind)

#0093A3

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577ddf;
/* rgb */ color: rgb(87, 125, 223);
/* oklch */ color: oklch(61.0% 0.155 266.0);

Tailwind

colors: {
  custom: {
    50: '#92a2e9',
    500: '#577ddf',
    950: '#000000',
  },
}

SCSS

$custom: #577ddf;
$custom-light: #92a2e9;
$custom-dark: #000000;

JSON

{
  "hex": "#577ddf",
  "rgb": {
    "r": 87,
    "g": 125,
    "b": 223
  },
  "hsl": {
    "h": 223.235,
    "s": 68,
    "l": 60.784
  },
  "oklch": {
    "l": 0.60964,
    "c": 0.15462,
    "h": 266
  },
  "luminance": 0.22021
}

Semantic roles & 50–950 ramp

primary

#577DDF

secondary

#E3D4AF

accent

#9C16D0

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #577DDF

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

Preview Lab → · Contrast checker → · Palette generator →