#577FD0#577FD0

#577FD0 is a mid, vivid blue. Relative luminance 0.218; OKLCH L 60.5% C 0.132 H 263.2°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#577FD0
RGB	rgb(87, 127, 208)
HSL	hsl(220, 56%, 58%)
HSV	hsv(220, 58%, 82%)
CMYK	cmyk(58.2%, 38.9%, 0%, 18.4%)
CIE-LAB	lab(53.77, 10.40, -46.06)
CIE-LCH	lch(53.77, 47.22, 282.73°)
OKLab	oklab(60.48% -0.0157 -0.1307)
OKLCH	oklch(60.48% 0.132 263.2)
XYZ	xyz(22.9011, 21.7572, 62.6550)
Luminance	0.2176 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FD0 #D0A857

analogous

#57BCD0 #577FD0 #6B57D0

triadic

#577FD0 #D0577F #7FD057

tetradic

#577FD0 #D057BC #D0A857 #57D06B

square

#577FD0 #D057BC #D0A857 #57D06B

split-complementary

#577FD0 #D06B57 #BCD057

monochromatic

#264687 #335FB7 #577FD0 #87A3DD #B7C8EB

Accessibility & contrast

On white

3.92

#577FD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#577FD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FD0

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FD0	#FFFFFF	#000000	##000000
##577FD0	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)

#5D87D3

Deuteranopia (green-blind)

#4D7BCE

Tritanopia (blue-blind)

#00919D

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577fd0;
/* rgb */ color: rgb(87, 127, 208);
/* oklch */ color: oklch(60.5% 0.132 263.2);

Tailwind

colors: {
  custom: {
    50: '#90a3df',
    500: '#577fd0',
    950: '#000000',
  },
}

SCSS

$custom: #577fd0;
$custom-light: #90a3df;
$custom-dark: #000000;

JSON

{
  "hex": "#577fd0",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 208
  },
  "hsl": {
    "h": 220.165,
    "s": 56.279,
    "l": 57.843
  },
  "oklch": {
    "l": 0.60481,
    "c": 0.13166,
    "h": 263.2
  },
  "luminance": 0.21759
}

Semantic roles & 50–950 ramp

primary

#577FD0

secondary

#DACAA9

accent

#AE48E0

background

#F9FAFD

surface

#F2F3FB

border

#CCCDD4

text

#0D0F15

muted

#7E7F83

Preview Lab

Preview with #577FD0

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

Preview Lab → · Contrast checker → · Palette generator →