#577FCD#577FCD

#577FCD is a mid, vivid blue. Relative luminance 0.216; OKLCH L 60.3% C 0.128 H 262.6°. Best body text is #000000 at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#577FCD
RGB	rgb(87, 127, 205)
HSL	hsl(220, 54%, 57%)
HSV	hsv(220, 58%, 80%)
CMYK	cmyk(57.6%, 38%, 0%, 19.6%)
CIE-LAB	lab(53.61, 9.42, -44.61)
CIE-LCH	lch(53.61, 45.59, 281.92°)
OKLab	oklab(60.31% -0.0164 -0.1265)
OKLCH	oklch(60.31% 0.128 262.6)
XYZ	xyz(22.5355, 21.6109, 60.7295)
Luminance	0.2161 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FCD #CDA557

analogous

#57BACD #577FCD #6A57CD

triadic

#577FCD #CD577F #7FCD57

tetradic

#577FCD #CD57BA #CDA557 #57CD6A

square

#577FCD #CD57BA #CDA557 #57CD6A

split-complementary

#577FCD #CD6A57 #BACD57

monochromatic

#274683 #355FB2 #577FCD #86A3DB #B5C7E9

Accessibility & contrast

On white

3.95

#577FCD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.32

#577FCD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FCD

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FCD	#FFFFFF	#000000	##000000
##577FCD	1.00	3.95	5.32	5.32
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.32	21.00	1.00	1.00
##000000	5.32	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E86D0

Deuteranopia (green-blind)

#4F7BCB

Tritanopia (blue-blind)

#00909C

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577fcd;
/* rgb */ color: rgb(87, 127, 205);
/* oklch */ color: oklch(60.3% 0.128 262.6);

Tailwind

colors: {
  custom: {
    50: '#8fa3dc',
    500: '#577fcd',
    950: '#000000',
  },
}

SCSS

$custom: #577fcd;
$custom-light: #8fa3dc;
$custom-dark: #000000;

JSON

{
  "hex": "#577fcd",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 205
  },
  "hsl": {
    "h": 219.661,
    "s": 54.128,
    "l": 57.255
  },
  "oklch": {
    "l": 0.60309,
    "c": 0.12753,
    "h": 262.6
  },
  "luminance": 0.21613
}

Semantic roles & 50–950 ramp

primary

#577FCD

secondary

#D8C8A8

accent

#AC4ADD

background

#F9FAFD

surface

#F2F3FB

border

#CCCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #577FCD

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

Preview Lab → · Contrast checker → · Palette generator →