#557AC7#557AC7

#557AC7 is a mid, vivid blue. Relative luminance 0.200; OKLCH L 58.8% C 0.126 H 263.6°. Best body text is #000000 at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#557AC7
RGB	rgb(85, 122, 199)
HSL	hsl(221, 50%, 56%)
HSV	hsv(221, 57%, 78%)
CMYK	cmyk(57.3%, 38.7%, 0%, 22%)
CIE-LAB	lab(51.81, 10.06, -44.06)
CIE-LCH	lch(51.81, 45.20, 282.86°)
OKLab	oklab(58.78% -0.014 -0.125)
OKLCH	oklch(58.78% 0.126 263.6)
XYZ	xyz(21.0111, 19.9722, 56.7695)
Luminance	0.1997 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557AC7 #C7A255

analogous

#55B3C7 #557AC7 #6955C7

triadic

#557AC7 #C7557A #7AC755

tetradic

#557AC7 #C755B3 #C7A255 #55C769

square

#557AC7 #C755B3 #C7A255 #55C769

split-complementary

#557AC7 #C76955 #B3C755

monochromatic

#28427A #375CA8 #557AC7 #839ED6 #B1C2E5

Accessibility & contrast

On white

4.20

#557AC7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.99

#557AC7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557AC7

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557AC7	#FFFFFF	#000000	##000000
##557AC7	1.00	4.20	4.99	4.99
#FFFFFF	4.20	1.00	21.00	21.00
#000000	4.99	21.00	1.00	1.00
##000000	4.99	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A81CA

Deuteranopia (green-blind)

#4B77C5

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #557ac7;
/* rgb */ color: rgb(85, 122, 199);
/* oklch */ color: oklch(58.8% 0.126 263.6);

Tailwind

colors: {
  custom: {
    50: '#8da0d8',
    500: '#557ac7',
    950: '#000000',
  },
}

SCSS

$custom: #557ac7;
$custom-light: #8da0d8;
$custom-dark: #000000;

JSON

{
  "hex": "#557ac7",
  "rgb": {
    "r": 85,
    "g": 122,
    "b": 199
  },
  "hsl": {
    "h": 220.526,
    "s": 50.442,
    "l": 55.686
  },
  "oklch": {
    "l": 0.58781,
    "c": 0.12576,
    "h": 263.6
  },
  "luminance": 0.19974
}

Semantic roles & 50–950 ramp

primary

#557AC7

secondary

#D4C4A4

accent

#AC4EDA

background

#F9F9FD

surface

#F1F2FA

border

#CBCCD3

text

#0D0E14

muted

#7E7E83

Preview Lab

Preview with #557AC7

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

Preview Lab → · Contrast checker → · Palette generator →