#557FDD#557FDD

#557FDD is a mid, vivid blue. Relative luminance 0.223; OKLCH L 61.2% C 0.150 H 264.3°. Best body text is #000000 at 5.47:1 contrast (WCAG AA passes).

Color values

HEX	#557FDD
RGB	rgb(85, 127, 221)
HSL	hsl(221, 67%, 60%)
HSV	hsv(221, 62%, 87%)
CMYK	cmyk(61.5%, 42.5%, 0%, 13.3%)
CIE-LAB	lab(54.37, 14.36, -52.44)
CIE-LCH	lch(54.37, 54.37, 285.32°)
OKLab	oklab(61.15% -0.0149 -0.1494)
OKLCH	oklch(61.15% 0.15 264.3)
XYZ	xyz(24.3823, 22.3283, 71.4175)
Luminance	0.2233 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#557FDD #DDB355

analogous

#55C3DD #557FDD #6F55DD

triadic

#557FDD #DD557F #7FDD55

tetradic

#557FDD #DD55C3 #DDB355 #55DD6F

square

#557FDD #DD55C3 #DDB355 #55DD6F

split-complementary

#557FDD #DD6F55 #C3DD55

monochromatic

#1F4499 #295BCC #557FDD #88A5E7 #BBCCF1

Accessibility & contrast

On white

3.84

#557FDD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.47

#557FDD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #557FDD

5.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##557FDD	#FFFFFF	#000000	##000000
##557FDD	1.00	3.84	5.47	5.47
#FFFFFF	3.84	1.00	21.00	21.00
#000000	5.47	21.00	1.00	1.00
##000000	5.47	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5489E1

Deuteranopia (green-blind)

#407CDB

Tritanopia (blue-blind)

#0094A3

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #557fdd;
/* rgb */ color: rgb(85, 127, 221);
/* oklch */ color: oklch(61.2% 0.150 264.3);

Tailwind

colors: {
  custom: {
    50: '#90a3e8',
    500: '#557fdd',
    950: '#000000',
  },
}

SCSS

$custom: #557fdd;
$custom-light: #90a3e8;
$custom-dark: #000000;

JSON

{
  "hex": "#557fdd",
  "rgb": {
    "r": 85,
    "g": 127,
    "b": 221
  },
  "hsl": {
    "h": 221.471,
    "s": 66.667,
    "l": 60
  },
  "oklch": {
    "l": 0.61151,
    "c": 0.15019,
    "h": 264.3
  },
  "luminance": 0.2233
}

Semantic roles & 50–950 ramp

primary

#557FDD

secondary

#E1D1AD

accent

#B53EEA

background

#F9FAFE

surface

#F2F3FD

border

#CCCDD5

text

#0E0F16

muted

#7E7F84

Preview Lab

Preview with #557FDD

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

Preview Lab → · Contrast checker → · Palette generator →