#577AC3#577AC3

#577AC3 is a mid, moderate blue. Relative luminance 0.199; OKLCH L 58.7% C 0.119 H 263.7°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#577AC3
RGB	rgb(87, 122, 195)
HSL	hsl(221, 47%, 55%)
HSV	hsv(221, 55%, 76%)
CMYK	cmyk(55.4%, 37.4%, 0%, 23.5%)
CIE-LAB	lab(51.71, 9.17, -41.93)
CIE-LCH	lch(51.71, 42.92, 282.34°)
OKLab	oklab(58.66% -0.013 -0.1187)
OKLCH	oklch(58.66% 0.119 263.7)
XYZ	xyz(20.7370, 19.8838, 54.3644)
Luminance	0.1988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577AC3 #C3A057

analogous

#57B0C3 #577AC3 #6A57C3

triadic

#577AC3 #C3577A #7AC357

tetradic

#577AC3 #C357B0 #C3A057 #57C36A

square

#577AC3 #C357B0 #C3A057 #57C36A

split-complementary

#577AC3 #C36A57 #B0C357

monochromatic

#2A4276 #3A5CA3 #577AC3 #849ED3 #B1C1E3

Accessibility & contrast

On white

4.22

#577AC3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#577AC3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577AC3

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577AC3	#FFFFFF	#000000	##000000
##577AC3	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C81C6

Deuteranopia (green-blind)

#4F77C1

Tritanopia (blue-blind)

#148A95

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #577ac3;
/* rgb */ color: rgb(87, 122, 195);
/* oklch */ color: oklch(58.7% 0.119 263.7);

Tailwind

colors: {
  custom: {
    50: '#8ea0d5',
    500: '#577ac3',
    950: '#000000',
  },
}

SCSS

$custom: #577ac3;
$custom-light: #8ea0d5;
$custom-dark: #000000;

JSON

{
  "hex": "#577ac3",
  "rgb": {
    "r": 87,
    "g": 122,
    "b": 195
  },
  "hsl": {
    "h": 220.556,
    "s": 47.368,
    "l": 55.294
  },
  "oklch": {
    "l": 0.58664,
    "c": 0.11942,
    "h": 263.7
  },
  "luminance": 0.19885
}

Semantic roles & 50–950 ramp

primary

#577AC3

secondary

#D1C3A4

accent

#AC51D7

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577AC3

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

Preview Lab → · Contrast checker → · Palette generator →