#557FDF#557FDF

#557FDF is a mid, vivid blue. Relative luminance 0.224; OKLCH L 61.3% C 0.153 H 264.5°. Best body text is #000000 at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#557FDF
RGB	rgb(85, 127, 223)
HSL	hsl(222, 68%, 60%)
HSV	hsv(222, 62%, 87%)
CMYK	cmyk(61.9%, 43%, 0%, 12.5%)
CIE-LAB	lab(54.49, 15.04, -53.38)
CIE-LCH	lch(54.49, 55.46, 285.73°)
OKLab	oklab(61.27% -0.0146 -0.1522)
OKLCH	oklch(61.27% 0.153 264.5)
XYZ	xyz(24.6504, 22.4356, 72.8292)
Luminance	0.2244 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FDF #DFB555

analogous

#55C4DF #557FDF #7055DF

triadic

#557FDF #DF557F #7FDF55

tetradic

#557FDF #DF55C4 #DFB555 #55DF70

square

#557FDF #DF55C4 #DFB555 #55DF70

split-complementary

#557FDF #DF7055 #C4DF55

monochromatic

#1D449C #275AD0 #557FDF #89A6E9 #BCCDF2

Accessibility & contrast

On white

3.83

#557FDF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.49

#557FDF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FDF

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FDF	#FFFFFF	#000000	##000000
##557FDF	1.00	3.83	5.49	5.49
#FFFFFF	3.83	1.00	21.00	21.00
#000000	5.49	21.00	1.00	1.00
##000000	5.49	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5389E3

Deuteranopia (green-blind)

#3E7CDD

Tritanopia (blue-blind)

#0095A4

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557fdf;
/* rgb */ color: rgb(85, 127, 223);
/* oklch */ color: oklch(61.3% 0.153 264.5);

Tailwind

colors: {
  custom: {
    50: '#91a3e9',
    500: '#557fdf',
    950: '#000000',
  },
}

SCSS

$custom: #557fdf;
$custom-light: #91a3e9;
$custom-dark: #000000;

JSON

{
  "hex": "#557fdf",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 223
  },
  "hsl": {
    "h": 221.739,
    "s": 68.317,
    "l": 60.392
  },
  "oklch": {
    "l": 0.61274,
    "c": 0.15291,
    "h": 264.5
  },
  "luminance": 0.22438
}

Semantic roles & 50–950 ramp

primary

#557FDF

secondary

#E2D2AE

accent

#9715D0

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #557FDF

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

Preview Lab → · Contrast checker → · Palette generator →