#577EC5#577EC5

#577EC5 is a mid, moderate blue. Relative luminance 0.210; OKLCH L 59.6% C 0.118 H 261.6°. Best body text is #000000 at 5.20:1 contrast (WCAG AA passes).

Color values

HEX	#577EC5
RGB	rgb(87, 126, 197)
HSL	hsl(219, 49%, 56%)
HSV	hsv(219, 56%, 77%)
CMYK	cmyk(55.8%, 36%, 0%, 22.7%)
CIE-LAB	lab(52.92, 7.40, -41.15)
CIE-LCH	lch(52.92, 41.81, 280.20°)
OKLab	oklab(59.64% -0.0171 -0.1164)
OKLCH	oklch(59.64% 0.118 261.6)
XYZ	xyz(21.4659, 20.9775, 55.7304)
Luminance	0.2098 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EC5 #C59E57

analogous

#57B5C5 #577EC5 #6757C5

triadic

#577EC5 #C5577E #7EC557

tetradic

#577EC5 #C557B5 #C59E57 #57C567

square

#577EC5 #C557B5 #C59E57 #57C567

split-complementary

#577EC5 #C56757 #B5C557

monochromatic

#294578 #3960A6 #577EC5 #84A1D5 #B2C4E4

Accessibility & contrast

On white

4.04

#577EC5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.20

#577EC5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EC5

5.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EC5	#FFFFFF	#000000	##000000
##577EC5	1.00	4.04	5.20	5.20
#FFFFFF	4.04	1.00	21.00	21.00
#000000	5.20	21.00	1.00	1.00
##000000	5.20	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6184C8

Deuteranopia (green-blind)

#537AC3

Tritanopia (blue-blind)

#0C8E98

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #577ec5;
/* rgb */ color: rgb(87, 126, 197);
/* oklch */ color: oklch(59.6% 0.118 261.6);

Tailwind

colors: {
  custom: {
    50: '#8ea3d7',
    500: '#577ec5',
    950: '#000000',
  },
}

SCSS

$custom: #577ec5;
$custom-light: #8ea3d7;
$custom-dark: #000000;

JSON

{
  "hex": "#577ec5",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 197
  },
  "hsl": {
    "h": 218.727,
    "s": 48.673,
    "l": 55.686
  },
  "oklch": {
    "l": 0.59643,
    "c": 0.11762,
    "h": 261.6
  },
  "luminance": 0.20979
}

Semantic roles & 50–950 ramp

primary

#577EC5

secondary

#D3C3A5

accent

#A850D8

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0F14

muted

#7E7E83

Preview Lab

Preview with #577EC5

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

Preview Lab → · Contrast checker → · Palette generator →