#577EDB#577EDB

#577EDB is a mid, vivid blue. Relative luminance 0.221; OKLCH L 60.9% C 0.148 H 265.2°. Best body text is #000000 at 5.41:1 contrast (WCAG AA passes).

Color values

HEX	#577EDB
RGB	rgb(87, 126, 219)
HSL	hsl(222, 65%, 60%)
HSV	hsv(222, 60%, 86%)
CMYK	cmyk(60.3%, 42.5%, 0%, 14.1%)
CIE-LAB	lab(54.09, 14.67, -51.76)
CIE-LCH	lch(54.09, 53.80, 285.83°)
OKLab	oklab(60.92% -0.0124 -0.1474)
OKLCH	oklch(60.92% 0.148 265.2)
XYZ	xyz(24.1731, 22.0603, 69.9883)
Luminance	0.2206 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EDB #DBB457

analogous

#57C0DB #577EDB #7257DB

triadic

#577EDB #DB577E #7EDB57

tetradic

#577EDB #DB57C0 #DBB457 #57DB72

square

#577EDB #DB57C0 #DBB457 #57DB72

split-complementary

#577EDB #DB7257 #C0DB57

monochromatic

#204397 #2B5ACA #577EDB #89A5E6 #BCCBF1

Accessibility & contrast

On white

3.88

#577EDB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.41

#577EDB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EDB

5.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EDB	#FFFFFF	#000000	##000000
##577EDB	1.00	3.88	5.41	5.41
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.41	21.00	1.00	1.00
##000000	5.41	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5488DF

Deuteranopia (green-blind)

#417CD9

Tritanopia (blue-blind)

#0093A2

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #577edb;
/* rgb */ color: rgb(87, 126, 219);
/* oklch */ color: oklch(60.9% 0.148 265.2);

Tailwind

colors: {
  custom: {
    50: '#91a2e7',
    500: '#577edb',
    950: '#000000',
  },
}

SCSS

$custom: #577edb;
$custom-light: #91a2e7;
$custom-dark: #000000;

JSON

{
  "hex": "#577edb",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 219
  },
  "hsl": {
    "h": 222.273,
    "s": 64.706,
    "l": 60
  },
  "oklch": {
    "l": 0.60924,
    "c": 0.14795,
    "h": 265.2
  },
  "luminance": 0.22062
}

Semantic roles & 50–950 ramp

primary

#577EDB

secondary

#E0D1AD

accent

#B640E8

background

#F9F9FE

surface

#F2F2FC

border

#CCCCD5

text

#0E0F16

muted

#7E7E84

Preview Lab

Preview with #577EDB

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

Preview Lab → · Contrast checker → · Palette generator →