#577EE9#577EE9

#577EE9 is a mid, vivid blue. Relative luminance 0.228; OKLCH L 61.8% C 0.167 H 266.5°. Best body text is #000000 at 5.57:1 contrast (WCAG AA passes).

Color values

HEX	#577EE9
RGB	rgb(87, 126, 233)
HSL	hsl(224, 77%, 63%)
HSV	hsv(224, 63%, 91%)
CMYK	cmyk(62.7%, 45.9%, 0%, 8.6%)
CIE-LAB	lab(54.90, 19.38, -58.32)
CIE-LCH	lch(54.90, 61.45, 288.39°)
OKLab	oklab(61.8% -0.0102 -0.1667)
OKLCH	oklch(61.8% 0.167 266.5)
XYZ	xyz(26.0943, 22.8288, 80.1063)
Luminance	0.2283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577EE9 #E9C257

analogous

#57C7E9 #577EE9 #7957E9

triadic

#577EE9 #E9577E #7EE957

tetradic

#577EE9 #E957C7 #E9C257 #57E979

square

#577EE9 #E957C7 #E9C257 #57E979

split-complementary

#577EE9 #E97957 #C7E957

monochromatic

#173FAF #2154E2 #577EE9 #8DA8F0 #C3D1F7

Accessibility & contrast

On white

3.77

#577EE9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.57

#577EE9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577EE9

5.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577EE9	#FFFFFF	#000000	##000000
##577EE9	1.00	3.77	5.57	5.57
#FFFFFF	3.77	1.00	21.00	21.00
#000000	5.57	21.00	1.00	1.00
##000000	5.57	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#498AED

Deuteranopia (green-blind)

#2F7DE7

Tritanopia (blue-blind)

#0096A8

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #577ee9;
/* rgb */ color: rgb(87, 126, 233);
/* oklch */ color: oklch(61.8% 0.167 266.5);

Tailwind

colors: {
  custom: {
    50: '#93a2f1',
    500: '#577ee9',
    950: '#000000',
  },
}

SCSS

$custom: #577ee9;
$custom-light: #93a2f1;
$custom-dark: #000000;

JSON

{
  "hex": "#577ee9",
  "rgb": {
    "r": 87,
    "g": 126,
    "b": 233
  },
  "hsl": {
    "h": 223.973,
    "s": 76.842,
    "l": 62.745
  },
  "oklch": {
    "l": 0.61801,
    "c": 0.16701,
    "h": 266.5
  },
  "luminance": 0.22831
}

Semantic roles & 50–950 ramp

primary

#577EE9

secondary

#E8DAB3

accent

#A20CD9

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0F17

muted

#7E7E85

Preview Lab

Preview with #577EE9

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

Preview Lab → · Contrast checker → · Palette generator →