#577BD0#577BD0

#577BD0 is a mid, vivid blue. Relative luminance 0.207; OKLCH L 59.6% C 0.136 H 265.2°. Best body text is #000000 at 5.15:1 contrast (WCAG AA passes).

Color values

HEX	#577BD0
RGB	rgb(87, 123, 208)
HSL	hsl(222, 56%, 58%)
HSV	hsv(222, 58%, 82%)
CMYK	cmyk(58.2%, 40.9%, 0%, 18.4%)
CIE-LAB	lab(52.67, 12.83, -47.81)
CIE-LCH	lch(52.67, 49.50, 285.03°)
OKLab	oklab(59.63% -0.0114 -0.1359)
OKLCH	oklch(59.63% 0.136 265.2)
XYZ	xyz(22.3947, 20.7444, 62.4862)
Luminance	0.2075 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BD0 #D0AC57

analogous

#57B7D0 #577BD0 #7057D0

triadic

#577BD0 #D0577B #7BD057

tetradic

#577BD0 #D057B7 #D0AC57 #57D070

square

#577BD0 #D057B7 #D0AC57 #57D070

split-complementary

#577BD0 #D07057 #B7D057

monochromatic

#264387 #335AB7 #577BD0 #87A1DD #B7C6EB

Accessibility & contrast

On white

4.08

#577BD0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.15

#577BD0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BD0

5.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BD0	#FFFFFF	#000000	##000000
##577BD0	1.00	4.08	5.15	5.15
#FFFFFF	4.08	1.00	21.00	21.00
#000000	5.15	21.00	1.00	1.00
##000000	5.15	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5684D3

Deuteranopia (green-blind)

#4679CE

Tritanopia (blue-blind)

#008E9B

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577bd0;
/* rgb */ color: rgb(87, 123, 208);
/* oklch */ color: oklch(59.6% 0.136 265.2);

Tailwind

colors: {
  custom: {
    50: '#90a0df',
    500: '#577bd0',
    950: '#000000',
  },
}

SCSS

$custom: #577bd0;
$custom-light: #90a0df;
$custom-dark: #000000;

JSON

{
  "hex": "#577bd0",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 208
  },
  "hsl": {
    "h": 222.149,
    "s": 56.279,
    "l": 57.843
  },
  "oklch": {
    "l": 0.59632,
    "c": 0.13635,
    "h": 265.2
  },
  "luminance": 0.20746
}

Semantic roles & 50–950 ramp

primary

#577BD0

secondary

#DACBA9

accent

#B348E0

background

#F9F9FD

surface

#F2F2FB

border

#CCCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #577BD0

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

Preview Lab → · Contrast checker → · Palette generator →