#557CEB#557CEB

#557CEB is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.4% C 0.173 H 266.7°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#557CEB
RGB	rgb(85, 124, 235)
HSL	hsl(224, 79%, 63%)
HSV	hsv(224, 64%, 92%)
CMYK	cmyk(63.8%, 47.2%, 0%, 7.8%)
CIE-LAB	lab(54.39, 20.94, -60.25)
CIE-LCH	lch(54.39, 63.79, 289.17°)
OKLab	oklab(61.43% -0.0098 -0.1724)
OKLCH	oklch(61.43% 0.173 266.7)
XYZ	xyz(25.9442, 22.3424, 81.5264)
Luminance	0.2235 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557CEB #EBC455

analogous

#55C7EB #557CEB #7955EB

triadic

#557CEB #EB557C #7CEB55

tetradic

#557CEB #EB55C7 #EBC455 #55EB79

square

#557CEB #EB55C7 #EBC455 #55EB79

split-complementary

#557CEB #EB7955 #C7EB55

monochromatic

#153DB1 #1E52E5 #557CEB #8CA6F1 #C3D0F8

Accessibility & contrast

On white

3.84

#557CEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#557CEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557CEB

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557CEB	#FFFFFF	#000000	##000000
##557CEB	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4389EF

Deuteranopia (green-blind)

#247CE9

Tritanopia (blue-blind)

#0096A8

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557ceb;
/* rgb */ color: rgb(85, 124, 235);
/* oklch */ color: oklch(61.4% 0.173 266.7);

Tailwind

colors: {
  custom: {
    50: '#93a1f2',
    500: '#557ceb',
    950: '#000000',
  },
}

SCSS

$custom: #557ceb;
$custom-light: #93a1f2;
$custom-dark: #000000;

JSON

{
  "hex": "#557ceb",
  "rgb": {
    "r": 85,
    "g": 124,
    "b": 235
  },
  "hsl": {
    "h": 224.4,
    "s": 78.947,
    "l": 62.745
  },
  "oklch": {
    "l": 0.61426,
    "c": 0.17273,
    "h": 266.7
  },
  "luminance": 0.22345
}

Semantic roles & 50–950 ramp

primary

#557CEB

secondary

#E9DBB3

accent

#A50ADB

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557CEB

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

Preview Lab → · Contrast checker → · Palette generator →