#557BEB#557BEB

#557BEB is a mid, vivid blue. Relative luminance 0.221; OKLCH L 61.2% C 0.174 H 267.1°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#557BEB
RGB	rgb(85, 123, 235)
HSL	hsl(225, 79%, 63%)
HSV	hsv(225, 64%, 92%)
CMYK	cmyk(63.8%, 47.7%, 0%, 7.8%)
CIE-LAB	lab(54.13, 21.56, -60.67)
CIE-LCH	lch(54.13, 64.39, 289.56°)
OKLab	oklab(61.22% -0.0089 -0.1737)
OKLCH	oklch(61.22% 0.174 267.1)
XYZ	xyz(25.8195, 22.0930, 81.4849)
Luminance	0.2210 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BEB #EBC555

analogous

#55C6EB #557BEB #7A55EB

triadic

#557BEB #EB557B #7BEB55

tetradic

#557BEB #EB55C6 #EBC555 #55EB7A

square

#557BEB #EB55C6 #EBC555 #55EB7A

split-complementary

#557BEB #EB7A55 #C6EB55

monochromatic

#153CB1 #1E50E5 #557BEB #8CA6F1 #C3D0F8

Accessibility & contrast

On white

3.88

#557BEB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#557BEB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BEB

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BEB	#FFFFFF	#000000	##000000
##557BEB	1.00	3.88	5.42	5.42
#FFFFFF	3.88	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4189EF

Deuteranopia (green-blind)

#207BE9

Tritanopia (blue-blind)

#0095A8

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #557beb;
/* rgb */ color: rgb(85, 123, 235);
/* oklch */ color: oklch(61.2% 0.174 267.1);

Tailwind

colors: {
  custom: {
    50: '#93a0f2',
    500: '#557beb',
    950: '#000000',
  },
}

SCSS

$custom: #557beb;
$custom-light: #93a0f2;
$custom-dark: #000000;

JSON

{
  "hex": "#557beb",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 235
  },
  "hsl": {
    "h": 224.8,
    "s": 78.947,
    "l": 62.745
  },
  "oklch": {
    "l": 0.61225,
    "c": 0.17394,
    "h": 267.1
  },
  "luminance": 0.22095
}

Semantic roles & 50–950 ramp

primary

#557BEB

secondary

#E9DBB3

accent

#A60ADB

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E17

muted

#7E7E85

Preview Lab

Preview with #557BEB

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

Preview Lab → · Contrast checker → · Palette generator →