#577FEB#577FEB

#577FEB is a light, vivid blue. Relative luminance 0.232; OKLCH L 62.1% C 0.169 H 266.3°. Best body text is #000000 at 5.64:1 contrast (WCAG AA passes).

Color values

HEX	#577FEB
RGB	rgb(87, 127, 235)
HSL	hsl(224, 79%, 63%)
HSV	hsv(224, 63%, 92%)
CMYK	cmyk(63%, 46%, 0%, 7.8%)
CIE-LAB	lab(55.28, 19.45, -58.82)
CIE-LCH	lch(55.28, 61.95, 288.30°)
OKLab	oklab(62.13% -0.0108 -0.1682)
OKLCH	oklch(62.13% 0.169 266.3)
XYZ	xyz(26.5101, 23.2007, 81.6623)
Luminance	0.2320 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#577FEB #EBC357

analogous

#57C9EB #577FEB #7957EB

triadic

#577FEB #EB577F #7FEB57

tetradic

#577FEB #EB57C9 #EBC357 #57EB79

square

#577FEB #EB57C9 #EBC357 #57EB79

split-complementary

#577FEB #EB7957 #C9EB57

monochromatic

#1540B2 #2055E4 #577FEB #8EA9F2 #C4D2F8

Accessibility & contrast

On white

3.72

#577FEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.64

#577FEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #577FEB

5.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##577FEB	#FFFFFF	#000000	##000000
##577FEB	1.00	3.72	5.64	5.64
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.64	21.00	1.00	1.00
##000000	5.64	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A8BEF

Deuteranopia (green-blind)

#2F7EE9

Tritanopia (blue-blind)

#0098AA

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #577feb;
/* rgb */ color: rgb(87, 127, 235);
/* oklch */ color: oklch(62.1% 0.169 266.3);

Tailwind

colors: {
  custom: {
    50: '#94a3f2',
    500: '#577feb',
    950: '#000000',
  },
}

SCSS

$custom: #577feb;
$custom-light: #94a3f2;
$custom-dark: #000000;

JSON

{
  "hex": "#577feb",
  "rgb": {
    "r": 87,
    "g": 127,
    "b": 235
  },
  "hsl": {
    "h": 223.784,
    "s": 78.723,
    "l": 63.137
  },
  "oklch": {
    "l": 0.62132,
    "c": 0.16851,
    "h": 266.3
  },
  "luminance": 0.23203
}

Semantic roles & 50–950 ramp

primary

#577FEB

secondary

#E9DBB4

accent

#A30ADB

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F17

muted

#7E7F85

Preview Lab

Preview with #577FEB

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

Preview Lab → · Contrast checker → · Palette generator →