#577AD0#577AD0

#577AD0 is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.4% C 0.138 H 265.7°. Best body text is #000000 at 5.10:1 contrast (WCAG AA passes).

Color values

HEX	#577AD0
RGB	rgb(87, 122, 208)
HSL	hsl(223, 56%, 58%)
HSV	hsv(223, 58%, 82%)
CMYK	cmyk(58.2%, 41.3%, 0%, 18.4%)
CIE-LAB	lab(52.40, 13.45, -48.24)
CIE-LCH	lch(52.40, 50.08, 285.57°)
OKLab	oklab(59.42% -0.0103 -0.1372)
OKLCH	oklch(59.42% 0.138 265.7)
XYZ	xyz(22.2713, 20.4976, 62.4451)
Luminance	0.2050 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AD0 #D0AD57

analogous

#57B6D0 #577AD0 #7157D0

triadic

#577AD0 #D0577A #7AD057

tetradic

#577AD0 #D057B6 #D0AD57 #57D071

square

#577AD0 #D057B6 #D0AD57 #57D071

split-complementary

#577AD0 #D07157 #B6D057

monochromatic

#264287 #3359B7 #577AD0 #87A0DD #B7C6EB

Accessibility & contrast

On white

4.12

#577AD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.10

#577AD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AD0

5.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AD0	#FFFFFF	#000000	##000000
##577AD0	1.00	4.12	5.10	5.10
#FFFFFF	4.12	1.00	21.00	21.00
#000000	5.10	21.00	1.00	1.00
##000000	5.10	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5583D3

Deuteranopia (green-blind)

#4578CE

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #577ad0;
/* rgb */ color: rgb(87, 122, 208);
/* oklch */ color: oklch(59.4% 0.138 265.7);

Tailwind

colors: {
  custom: {
    50: '#90a0df',
    500: '#577ad0',
    950: '#000000',
  },
}

SCSS

$custom: #577ad0;
$custom-light: #90a0df;
$custom-dark: #000000;

JSON

{
  "hex": "#577ad0",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 208
  },
  "hsl": {
    "h": 222.645,
    "s": 56.279,
    "l": 57.843
  },
  "oklch": {
    "l": 0.59421,
    "c": 0.13756,
    "h": 265.7
  },
  "luminance": 0.20499
}

Semantic roles & 50–950 ramp

primary

#577AD0

secondary

#DACCA9

accent

#B448E0

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577AD0

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

Preview Lab → · Contrast checker → · Palette generator →