#557ACD#557ACD

#557ACD is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.134 H 264.5°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#557ACD
RGB	rgb(85, 122, 205)
HSL	hsl(222, 55%, 57%)
HSV	hsv(222, 59%, 80%)
CMYK	cmyk(58.5%, 40.5%, 0%, 19.6%)
CIE-LAB	lab(52.13, 12.05, -46.97)
CIE-LCH	lch(52.13, 48.50, 284.39°)
OKLab	oklab(59.13% -0.0128 -0.1335)
OKLCH	oklch(59.13% 0.134 264.5)
XYZ	xyz(21.7215, 20.2563, 60.5110)
Luminance	0.2026 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557ACD #CDA855

analogous

#55B6CD #557ACD #6C55CD

triadic

#557ACD #CD557A #7ACD55

tetradic

#557ACD #CD55B6 #CDA855 #55CD6C

square

#557ACD #CD55B6 #CDA855 #55CD6C

split-complementary

#557ACD #CD6C55 #B6CD55

monochromatic

#264282 #345AB1 #557ACD #849FDB #B4C4E9

Accessibility & contrast

On white

4.16

#557ACD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#557ACD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557ACD

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557ACD	#FFFFFF	#000000	##000000
##557ACD	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5682D0

Deuteranopia (green-blind)

#4677CB

Tritanopia (blue-blind)

#008C99

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #557acd;
/* rgb */ color: rgb(85, 122, 205);
/* oklch */ color: oklch(59.1% 0.134 264.5);

Tailwind

colors: {
  custom: {
    50: '#8ea0dd',
    500: '#557acd',
    950: '#000000',
  },
}

SCSS

$custom: #557acd;
$custom-light: #8ea0dd;
$custom-dark: #000000;

JSON

{
  "hex": "#557acd",
  "rgb": {
    "r": 85,
    "g": 122,
    "b": 205
  },
  "hsl": {
    "h": 221.5,
    "s": 54.545,
    "l": 56.863
  },
  "oklch": {
    "l": 0.59132,
    "c": 0.13409,
    "h": 264.5
  },
  "luminance": 0.20258
}

Semantic roles & 50–950 ramp

primary

#557ACD

secondary

#D7C8A6

accent

#B04ADE

background

#F9F9FD

surface

#F1F2FB

border

#CBCCD4

text

#0D0E15

muted

#7E7E83

Preview Lab

Preview with #557ACD

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

Preview Lab → · Contrast checker → · Palette generator →