#577BC6#577BC6

#577BC6 is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.122 H 263.7°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#577BC6
RGB	rgb(87, 123, 198)
HSL	hsl(221, 49%, 56%)
HSV	hsv(221, 56%, 78%)
CMYK	cmyk(56.1%, 37.9%, 0%, 22.4%)
CIE-LAB	lab(52.14, 9.54, -42.96)
CIE-LCH	lch(52.14, 44.01, 282.52°)
OKLab	oklab(59.05% -0.0135 -0.1217)
OKLCH	oklch(59.05% 0.122 263.7)
XYZ	xyz(21.2030, 20.2677, 56.2099)
Luminance	0.2027 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BC6 #C6A257

analogous

#57B2C6 #577BC6 #6A57C6

triadic

#577BC6 #C6577B #7BC657

tetradic

#577BC6 #C657B2 #C6A257 #57C66A

square

#577BC6 #C657B2 #C6A257 #57C66A

split-complementary

#577BC6 #C66A57 #B2C657

monochromatic

#294379 #395DA7 #577BC6 #859FD6 #B2C3E5

Accessibility & contrast

On white

4.16

#577BC6 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#577BC6 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BC6

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BC6	#FFFFFF	#000000	##000000
##577BC6	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C82C9

Deuteranopia (green-blind)

#4E78C4

Tritanopia (blue-blind)

#0B8C97

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577bc6;
/* rgb */ color: rgb(87, 123, 198);
/* oklch */ color: oklch(59.1% 0.122 263.7);

Tailwind

colors: {
  custom: {
    50: '#8ea0d7',
    500: '#577bc6',
    950: '#000000',
  },
}

SCSS

$custom: #577bc6;
$custom-light: #8ea0d7;
$custom-dark: #000000;

JSON

{
  "hex": "#577bc6",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 198
  },
  "hsl": {
    "h": 220.541,
    "s": 49.333,
    "l": 55.882
  },
  "oklch": {
    "l": 0.5905,
    "c": 0.12244,
    "h": 263.7
  },
  "luminance": 0.20269
}

Semantic roles & 50–950 ramp

primary

#577BC6

secondary

#D3C4A5

accent

#AC4FD9

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577BC6

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

Preview Lab → · Contrast checker → · Palette generator →