#557BE7#557BE7

#557BE7 is a mid, vivid blue. Relative luminance 0.219; OKLCH L 61.0% C 0.169 H 266.8°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#557BE7
RGB	rgb(85, 123, 231)
HSL	hsl(224, 75%, 62%)
HSV	hsv(224, 63%, 91%)
CMYK	cmyk(63.2%, 46.8%, 0%, 9.4%)
CIE-LAB	lab(53.88, 20.20, -58.83)
CIE-LCH	lch(53.88, 62.20, 288.95°)
OKLab	oklab(60.96% -0.0094 -0.1683)
OKLCH	oklch(60.96% 0.169 266.8)
XYZ	xyz(25.2481, 21.8645, 78.4755)
Luminance	0.2187 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BE7 #E7C155

analogous

#55C4E7 #557BE7 #7855E7

triadic

#557BE7 #E7557B #7BE755

tetradic

#557BE7 #E755C4 #E7C155 #55E778

square

#557BE7 #E755C4 #E7C155 #55E778

split-complementary

#557BE7 #E77855 #C4E755

monochromatic

#183EAA #2051DF #557BE7 #8BA5EF #C0CEF6

Accessibility & contrast

On white

3.91

#557BE7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#557BE7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BE7

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BE7	#FFFFFF	#000000	##000000
##557BE7	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4488EB

Deuteranopia (green-blind)

#287BE5

Tritanopia (blue-blind)

#0094A6

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #557be7;
/* rgb */ color: rgb(85, 123, 231);
/* oklch */ color: oklch(61.0% 0.169 266.8);

Tailwind

colors: {
  custom: {
    50: '#92a0ef',
    500: '#557be7',
    950: '#000000',
  },
}

SCSS

$custom: #557be7;
$custom-light: #92a0ef;
$custom-dark: #000000;

JSON

{
  "hex": "#557be7",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 231
  },
  "hsl": {
    "h": 224.384,
    "s": 75.258,
    "l": 61.961
  },
  "oklch": {
    "l": 0.60962,
    "c": 0.16854,
    "h": 266.8
  },
  "luminance": 0.21867
}

Semantic roles & 50–950 ramp

primary

#557BE7

secondary

#E7D9B1

accent

#A30ED7

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557BE7

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

Preview Lab → · Contrast checker → · Palette generator →