#557BE0#557BE0

#557BE0 is a mid, vivid blue. Relative luminance 0.215; OKLCH L 60.5% C 0.159 H 266.2°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#557BE0
RGB	rgb(85, 123, 224)
HSL	hsl(224, 69%, 61%)
HSV	hsv(224, 62%, 88%)
CMYK	cmyk(62.1%, 45.1%, 0%, 12.2%)
CIE-LAB	lab(53.47, 17.82, -55.57)
CIE-LCH	lch(53.47, 58.36, 287.78°)
OKLab	oklab(60.51% -0.0104 -0.1587)
OKLCH	oklch(60.51% 0.159 266.2)
XYZ	xyz(24.2792, 21.4769, 73.3725)
Luminance	0.2148 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557BE0 #E0BA55

analogous

#55C0E0 #557BE0 #7455E0

triadic

#557BE0 #E0557B #7BE055

tetradic

#557BE0 #E055C0 #E0BA55 #55E074

square

#557BE0 #E055C0 #E0BA55 #55E074

split-complementary

#557BE0 #E07455 #C0E055

monochromatic

#1D409E #2655D2 #557BE0 #89A3E9 #BDCBF3

Accessibility & contrast

On white

3.97

#557BE0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#557BE0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557BE0

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557BE0	#FFFFFF	#000000	##000000
##557BE0	1.00	3.97	5.30	5.30
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B86E4

Deuteranopia (green-blind)

#347ADE

Tritanopia (blue-blind)

#0092A3

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #557be0;
/* rgb */ color: rgb(85, 123, 224);
/* oklch */ color: oklch(60.5% 0.159 266.2);

Tailwind

colors: {
  custom: {
    50: '#91a0ea',
    500: '#557be0',
    950: '#000000',
  },
}

SCSS

$custom: #557be0;
$custom-light: #91a0ea;
$custom-dark: #000000;

JSON

{
  "hex": "#557be0",
  "rgb": {
    "r": 85,
    "g": 123,
    "b": 224
  },
  "hsl": {
    "h": 223.597,
    "s": 69.154,
    "l": 60.588
  },
  "oklch": {
    "l": 0.60511,
    "c": 0.15904,
    "h": 266.2
  },
  "luminance": 0.21479
}

Semantic roles & 50–950 ramp

primary

#557BE0

secondary

#E3D4AE

accent

#9E14D1

background

#F9F9FE

surface

#F2F2FD

border

#CCCCD5

text

#0E0E16

muted

#7E7E84

Preview Lab

Preview with #557BE0

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

Preview Lab → · Contrast checker → · Palette generator →