#577CDF#577CDF

#577CDF is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.8% C 0.156 H 266.4°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#577CDF
RGB	rgb(87, 124, 223)
HSL	hsl(224, 68%, 61%)
HSV	hsv(224, 61%, 87%)
CMYK	cmyk(61%, 44.4%, 0%, 12.5%)
CIE-LAB	lab(53.78, 17.23, -54.51)
CIE-LCH	lch(53.78, 57.16, 287.55°)
OKLab	oklab(60.76% -0.0097 -0.1555)
OKLCH	oklch(60.76% 0.156 266.4)
XYZ	xyz(24.4529, 21.7671, 72.7106)
Luminance	0.2177 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CDF #DFBA57

analogous

#57C0DF #577CDF #7657DF

triadic

#577CDF #DF577C #7CDF57

tetradic

#577CDF #DF57C0 #DFBA57 #57DF76

square

#577CDF #DF57C0 #DFBA57 #57DF76

split-complementary

#577CDF #DF7657 #C0DF57

monochromatic

#1E419E #2856D1 #577CDF #8AA4E9 #BECCF3

Accessibility & contrast

On white

3.92

#577CDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#577CDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CDF

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CDF	#FFFFFF	#000000	##000000
##577CDF	1.00	3.92	5.35	5.35
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E87E3

Deuteranopia (green-blind)

#397BDD

Tritanopia (blue-blind)

#0092A3

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577cdf;
/* rgb */ color: rgb(87, 124, 223);
/* oklch */ color: oklch(60.8% 0.156 266.4);

Tailwind

colors: {
  custom: {
    50: '#92a1e9',
    500: '#577cdf',
    950: '#000000',
  },
}

SCSS

$custom: #577cdf;
$custom-light: #92a1e9;
$custom-dark: #000000;

JSON

{
  "hex": "#577cdf",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 223
  },
  "hsl": {
    "h": 223.676,
    "s": 68,
    "l": 60.784
  },
  "oklch": {
    "l": 0.60758,
    "c": 0.15582,
    "h": 266.4
  },
  "luminance": 0.21769
}

Semantic roles & 50–950 ramp

primary

#577CDF

secondary

#E3D5AF

accent

#9D16D0

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577CDF

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

Preview Lab → · Contrast checker → · Palette generator →