#577CDA#577CDA

#577CDA is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.4% C 0.149 H 265.9°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#577CDA
RGB	rgb(87, 124, 218)
HSL	hsl(223, 64%, 60%)
HSV	hsv(223, 60%, 85%)
CMYK	cmyk(60.1%, 43.1%, 0%, 14.5%)
CIE-LAB	lab(53.49, 15.56, -52.15)
CIE-LCH	lch(53.49, 54.42, 286.61°)
OKLab	oklab(60.45% -0.0106 -0.1486)
OKLCH	oklch(60.45% 0.149 265.9)
XYZ	xyz(23.7887, 21.5015, 69.2127)
Luminance	0.2150 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577CDA #DAB557

analogous

#57BEDA #577CDA #7357DA

triadic

#577CDA #DA577C #7CDA57

tetradic

#577CDA #DA57BE #DAB557 #57DA73

square

#577CDA #DA57BE #DAB557 #57DA73

split-complementary

#577CDA #DA7357 #BEDA57

monochromatic

#214296 #2C58C8 #577CDA #89A3E5 #BBCAF0

Accessibility & contrast

On white

3.96

#577CDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#577CDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577CDA

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577CDA	#FFFFFF	#000000	##000000
##577CDA	1.00	3.96	5.30	5.30
#FFFFFF	3.96	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5186DE

Deuteranopia (green-blind)

#3E7AD8

Tritanopia (blue-blind)

#0091A0

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #577cda;
/* rgb */ color: rgb(87, 124, 218);
/* oklch */ color: oklch(60.4% 0.149 265.9);

Tailwind

colors: {
  custom: {
    50: '#91a1e6',
    500: '#577cda',
    950: '#000000',
  },
}

SCSS

$custom: #577cda;
$custom-light: #91a1e6;
$custom-dark: #000000;

JSON

{
  "hex": "#577cda",
  "rgb": {
    "r": 87,
    "g": 124,
    "b": 218
  },
  "hsl": {
    "h": 223.053,
    "s": 63.902,
    "l": 59.804
  },
  "oklch": {
    "l": 0.60447,
    "c": 0.14897,
    "h": 265.9
  },
  "luminance": 0.21503
}

Semantic roles & 50–950 ramp

primary

#577CDA

secondary

#E0D1AD

accent

#B841E7

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #577CDA

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

Preview Lab → · Contrast checker → · Palette generator →