#577BC4#577BC4

#577BC4 is a mid, moderate blue. Relative luminance 0.202; OKLCH L 58.9% C 0.120 H 263.3°. Best body text is #000000 at 5.04:1 contrast (WCAG AA passes).

Color values

HEX	#577BC4
RGB	rgb(87, 123, 196)
HSL	hsl(220, 48%, 55%)
HSV	hsv(220, 56%, 77%)
CMYK	cmyk(55.6%, 37.2%, 0%, 23.1%)
CIE-LAB	lab(52.04, 8.89, -41.98)
CIE-LCH	lch(52.04, 42.91, 281.96°)
OKLab	oklab(58.94% -0.014 -0.1188)
OKLCH	oklch(58.94% 0.12 263.3)
XYZ	xyz(20.9739, 20.1760, 55.0030)
Luminance	0.2018 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577BC4 #C4A057

analogous

#57B2C4 #577BC4 #6957C4

triadic

#577BC4 #C4577B #7BC457

tetradic

#577BC4 #C457B2 #C4A057 #57C469

square

#577BC4 #C457B2 #C4A057 #57C469

split-complementary

#577BC4 #C46957 #B2C457

monochromatic

#2A4377 #3A5DA4 #577BC4 #849FD4 #B2C2E4

Accessibility & contrast

On white

4.17

#577BC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.04

#577BC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577BC4

5.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577BC4	#FFFFFF	#000000	##000000
##577BC4	1.00	4.17	5.04	5.04
#FFFFFF	4.17	1.00	21.00	21.00
#000000	5.04	21.00	1.00	1.00
##000000	5.04	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D82C7

Deuteranopia (green-blind)

#5077C2

Tritanopia (blue-blind)

#118B96

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #577bc4;
/* rgb */ color: rgb(87, 123, 196);
/* oklch */ color: oklch(58.9% 0.120 263.3);

Tailwind

colors: {
  custom: {
    50: '#8ea0d6',
    500: '#577bc4',
    950: '#000000',
  },
}

SCSS

$custom: #577bc4;
$custom-light: #8ea0d6;
$custom-dark: #000000;

JSON

{
  "hex": "#577bc4",
  "rgb": {
    "r": 87,
    "g": 123,
    "b": 196
  },
  "hsl": {
    "h": 220.183,
    "s": 48.018,
    "l": 55.49
  },
  "oklch": {
    "l": 0.58937,
    "c": 0.11965,
    "h": 263.3
  },
  "luminance": 0.20178
}

Semantic roles & 50–950 ramp

primary

#577BC4

secondary

#D2C3A5

accent

#AB50D8

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #577BC4

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

Preview Lab → · Contrast checker → · Palette generator →