#577CCD#577CCD

#577CCD is a mid, vivid blue. Relative luminance 0.208; OKLCH L 59.7% C 0.131 H 264.3°. Best body text is #000000 at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#577CCD
RGB	rgb(87, 124, 205)
HSL	hsl(221, 54%, 57%)
HSV	hsv(221, 58%, 80%)
CMYK	cmyk(57.6%, 39.5%, 0%, 19.6%)
CIE-LAB	lab(52.78, 11.23, -45.93)
CIE-LCH	lch(52.78, 47.28, 283.75°)
OKLab	oklab(59.67% -0.0131 -0.1303)
OKLCH	oklch(59.67% 0.131 264.3)
XYZ	xyz(22.1538, 20.8475, 60.6023)
Luminance	0.2085 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CCD #CDA857

analogous

#57B7CD #577CCD #6D57CD

triadic

#577CCD #CD577C #7CCD57

tetradic

#577CCD #CD57B7 #CDA857 #57CD6D

square

#577CCD #CD57B7 #CDA857 #57CD6D

split-complementary

#577CCD #CD6D57 #B7CD57

monochromatic

#274483 #355CB2 #577CCD #86A1DB #B5C6E9

Accessibility & contrast

On white

4.06

#577CCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.17

#577CCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CCD

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CCD	#FFFFFF	#000000	##000000
##577CCD	1.00	4.06	5.17	5.17
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.17	21.00	1.00	1.00
##000000	5.17	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A84D0

Deuteranopia (green-blind)

#4A79CB

Tritanopia (blue-blind)

#008E9A

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577ccd;
/* rgb */ color: rgb(87, 124, 205);
/* oklch */ color: oklch(59.7% 0.131 264.3);

Tailwind

colors: {
  custom: {
    50: '#8fa1dc',
    500: '#577ccd',
    950: '#000000',
  },
}

SCSS

$custom: #577ccd;
$custom-light: #8fa1dc;
$custom-dark: #000000;

JSON

{
  "hex": "#577ccd",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 205
  },
  "hsl": {
    "h": 221.186,
    "s": 54.128,
    "l": 57.255
  },
  "oklch": {
    "l": 0.59667,
    "c": 0.131,
    "h": 264.3
  },
  "luminance": 0.20849
}

Semantic roles & 50–950 ramp

primary

#577CCD

secondary

#D8C9A8

accent

#AF4ADD

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577CCD

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

Preview Lab → · Contrast checker → · Palette generator →