#577ECC#577ECC

#577ECC is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.0% C 0.127 H 263.0°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#577ECC
RGB	rgb(87, 126, 204)
HSL	hsl(220, 53%, 57%)
HSV	hsv(220, 57%, 80%)
CMYK	cmyk(57.4%, 38.2%, 0%, 20%)
CIE-LAB	lab(53.28, 9.69, -44.56)
CIE-LCH	lch(53.28, 45.61, 282.27°)
OKLab	oklab(60.04% -0.0155 -0.1263)
OKLCH	oklch(60.04% 0.127 263)
XYZ	xyz(22.2867, 21.3058, 60.0530)
Luminance	0.2131 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577ECC #CCA557

analogous

#57B9CC #577ECC #6B57CC

triadic

#577ECC #CC577E #7ECC57

tetradic

#577ECC #CC57B9 #CCA557 #57CC6B

square

#577ECC #CC57B9 #CCA557 #57CC6B

split-complementary

#577ECC #CC6B57 #B9CC57

monochromatic

#274581 #365EB0 #577ECC #86A2DA #B5C6E9

Accessibility & contrast

On white

3.99

#577ECC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#577ECC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577ECC

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577ECC	#FFFFFF	#000000	##000000
##577ECC	1.00	3.99	5.26	5.26
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D85CF

Deuteranopia (green-blind)

#4E7ACA

Tritanopia (blue-blind)

#008F9B

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #577ecc;
/* rgb */ color: rgb(87, 126, 204);
/* oklch */ color: oklch(60.0% 0.127 263.0);

Tailwind

colors: {
  custom: {
    50: '#8fa3dc',
    500: '#577ecc',
    950: '#000000',
  },
}

SCSS

$custom: #577ecc;
$custom-light: #8fa3dc;
$custom-dark: #000000;

JSON

{
  "hex": "#577ecc",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 204
  },
  "hsl": {
    "h": 220,
    "s": 53.425,
    "l": 57.059
  },
  "oklch": {
    "l": 0.60037,
    "c": 0.1273,
    "h": 263
  },
  "luminance": 0.21308
}

Semantic roles & 50–950 ramp

primary

#577ECC

secondary

#D7C7A8

accent

#AC4BDD

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0F15

muted

#7E7E83

Preview Lab

Preview with #577ECC

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

Preview Lab → · Contrast checker → · Palette generator →