#577EC7#577EC7

#577EC7 is a mid, vivid blue. Relative luminance 0.211; OKLCH L 59.8% C 0.120 H 262.1°. Best body text is #000000 at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#577EC7
RGB	rgb(87, 126, 199)
HSL	hsl(219, 50%, 56%)
HSV	hsv(219, 56%, 78%)
CMYK	cmyk(56.3%, 36.7%, 0%, 22%)
CIE-LAB	lab(53.03, 8.05, -42.13)
CIE-LCH	lch(53.03, 42.89, 280.82°)
OKLab	oklab(59.75% -0.0166 -0.1192)
OKLCH	oklch(59.75% 0.12 262.1)
XYZ	xyz(21.6966, 21.0697, 56.9453)
Luminance	0.2107 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EC7 #C7A057

analogous

#57B6C7 #577EC7 #6857C7

triadic

#577EC7 #C7577E #7EC757

tetradic

#577EC7 #C757B6 #C7A057 #57C768

square

#577EC7 #C757B6 #C7A057 #57C768

split-complementary

#577EC7 #C76857 #B6C757

monochromatic

#29457B #385FA9 #577EC7 #85A1D6 #B3C4E6

Accessibility & contrast

On white

4.03

#577EC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.21

#577EC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EC7

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EC7	#FFFFFF	#000000	##000000
##577EC7	1.00	4.03	5.21	5.21
#FFFFFF	4.03	1.00	21.00	21.00
#000000	5.21	21.00	1.00	1.00
##000000	5.21	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6084CA

Deuteranopia (green-blind)

#527AC5

Tritanopia (blue-blind)

#058E99

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #577ec7;
/* rgb */ color: rgb(87, 126, 199);
/* oklch */ color: oklch(59.8% 0.120 262.1);

Tailwind

colors: {
  custom: {
    50: '#8ea3d8',
    500: '#577ec7',
    950: '#000000',
  },
}

SCSS

$custom: #577ec7;
$custom-light: #8ea3d8;
$custom-dark: #000000;

JSON

{
  "hex": "#577ec7",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 199
  },
  "hsl": {
    "h": 219.107,
    "s": 50,
    "l": 56.078
  },
  "oklch": {
    "l": 0.59754,
    "c": 0.12039,
    "h": 262.1
  },
  "luminance": 0.21071
}

Semantic roles & 50–950 ramp

primary

#577EC7

secondary

#D4C4A6

accent

#A94EDA

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0F14

muted

#7E7E83

Preview Lab

Preview with #577EC7

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

Preview Lab → · Contrast checker → · Palette generator →