#577CD0#577CD0

#577CD0 is a mid, vivid blue. Relative luminance 0.210; OKLCH L 59.8% C 0.135 H 264.7°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#577CD0
RGB	rgb(87, 124, 208)
HSL	hsl(222, 56%, 58%)
HSV	hsv(222, 58%, 82%)
CMYK	cmyk(58.2%, 40.4%, 0%, 18.4%)
CIE-LAB	lab(52.94, 12.23, -47.37)
CIE-LCH	lch(52.94, 48.92, 284.47°)
OKLab	oklab(59.84% -0.0124 -0.1346)
OKLCH	oklch(59.84% 0.135 264.7)
XYZ	xyz(22.5194, 20.9938, 62.5278)
Luminance	0.2100 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CD0 #D0AB57

analogous

#57B8D0 #577CD0 #6E57D0

triadic

#577CD0 #D0577C #7CD057

tetradic

#577CD0 #D057B8 #D0AB57 #57D06E

square

#577CD0 #D057B8 #D0AB57 #57D06E

split-complementary

#577CD0 #D06E57 #B8D057

monochromatic

#264387 #335BB7 #577CD0 #87A1DD #B7C7EB

Accessibility & contrast

On white

4.04

#577CD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#577CD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CD0

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CD0	#FFFFFF	#000000	##000000
##577CD0	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5884D3

Deuteranopia (green-blind)

#4879CE

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577cd0;
/* rgb */ color: rgb(87, 124, 208);
/* oklch */ color: oklch(59.8% 0.135 264.7);

Tailwind

colors: {
  custom: {
    50: '#90a1df',
    500: '#577cd0',
    950: '#000000',
  },
}

SCSS

$custom: #577cd0;
$custom-light: #90a1df;
$custom-dark: #000000;

JSON

{
  "hex": "#577cd0",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 208
  },
  "hsl": {
    "h": 221.653,
    "s": 56.279,
    "l": 57.843
  },
  "oklch": {
    "l": 0.59843,
    "c": 0.13516,
    "h": 264.7
  },
  "luminance": 0.20996
}

Semantic roles & 50–950 ramp

primary

#577CD0

secondary

#DACBA9

accent

#B148E0

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577CD0

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

Preview Lab → · Contrast checker → · Palette generator →