#577EC4#577EC4

#577EC4 is a mid, moderate blue. Relative luminance 0.209; OKLCH L 59.6% C 0.116 H 261.4°. Best body text is #000000 at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#577EC4
RGB	rgb(87, 126, 196)
HSL	hsl(219, 48%, 55%)
HSV	hsv(219, 56%, 77%)
CMYK	cmyk(55.6%, 35.7%, 0%, 23.1%)
CIE-LAB	lab(52.87, 7.08, -40.66)
CIE-LCH	lch(52.87, 41.27, 279.87°)
OKLab	oklab(59.59% -0.0174 -0.1149)
OKLCH	oklch(59.59% 0.116 261.4)
XYZ	xyz(21.3517, 20.9318, 55.1289)
Luminance	0.2093 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EC4 #C49D57

analogous

#57B5C4 #577EC4 #6657C4

triadic

#577EC4 #C4577E #7EC457

tetradic

#577EC4 #C457B5 #C49D57 #57C466

square

#577EC4 #C457B5 #C49D57 #57C466

split-complementary

#577EC4 #C46657 #B5C457

monochromatic

#2A4577 #3A60A4 #577EC4 #84A1D4 #B2C4E4

Accessibility & contrast

On white

4.05

#577EC4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.19

#577EC4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EC4

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EC4	#FFFFFF	#000000	##000000
##577EC4	1.00	4.05	5.19	5.19
#FFFFFF	4.05	1.00	21.00	21.00
#000000	5.19	21.00	1.00	1.00
##000000	5.19	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6284C7

Deuteranopia (green-blind)

#547AC3

Tritanopia (blue-blind)

#0F8D98

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577ec4;
/* rgb */ color: rgb(87, 126, 196);
/* oklch */ color: oklch(59.6% 0.116 261.4);

Tailwind

colors: {
  custom: {
    50: '#8ea3d6',
    500: '#577ec4',
    950: '#000000',
  },
}

SCSS

$custom: #577ec4;
$custom-light: #8ea3d6;
$custom-dark: #000000;

JSON

{
  "hex": "#577ec4",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 196
  },
  "hsl": {
    "h": 218.532,
    "s": 48.018,
    "l": 55.49
  },
  "oklch": {
    "l": 0.59588,
    "c": 0.11625,
    "h": 261.4
  },
  "luminance": 0.20933
}

Semantic roles & 50–950 ramp

primary

#577EC4

secondary

#D2C2A5

accent

#A750D8

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0F14

muted

#7E7E83

Preview Lab

Preview with #577EC4

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

Preview Lab → · Contrast checker → · Palette generator →