#3557CC#3557CC

#3557CC is a mid, vivid blue. Relative luminance 0.119; OKLCH L 50.3% C 0.186 H 267.0°. Best body text is #FFFFFF at 6.20:1 contrast (WCAG AA passes).

Color values

HEX	#3557CC
RGB	rgb(53, 87, 204)
HSL	hsl(226, 60%, 50%)
HSV	hsv(226, 74%, 80%)
CMYK	cmyk(74%, 57.4%, 0%, 20%)
CIE-LAB	lab(41.11, 28.61, -64.21)
CIE-LCH	lch(41.11, 70.30, 294.01°)
OKLab	oklab(50.3% -0.0096 -0.1853)
OKLCH	oklch(50.3% 0.186 267)
XYZ	xyz(15.7717, 11.9312, 58.5868)
Luminance	0.1193 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3557CC #CCAA35

analogous

#35A2CC #3557CC #5E35CC

triadic

#3557CC #CC3557 #57CC35

tetradic

#3557CC #CC35A2 #CCAA35 #35CC5E

square

#3557CC #CC35A2 #CCAA35 #35CC5E

split-complementary

#3557CC #CC5E35 #A2CC35

monochromatic

#1B2D6B #27429C #3557CC #6680D8 #97A8E5

Accessibility & contrast

On white

6.20

#3557CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.39

#3557CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3557CC

6.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3557CC	#FFFFFF	#000000	##FFFFFF
##3557CC	1.00	6.20	3.39	6.20
#FFFFFF	6.20	1.00	21.00	1.00
#000000	3.39	21.00	1.00	21.00
##FFFFFF	6.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068D0

Deuteranopia (green-blind)

#005ACA

Tritanopia (blue-blind)

#007489

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3557cc;
/* rgb */ color: rgb(53, 87, 204);
/* oklch */ color: oklch(50.3% 0.186 267.0);

Tailwind

colors: {
  custom: {
    50: '#8186dc',
    500: '#3557cc',
    950: '#000000',
  },
}

SCSS

$custom: #3557cc;
$custom-light: #8186dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3557cc",
  "rgb": {
    "r": 53,
    "g": 87,
    "b": 204
  },
  "hsl": {
    "h": 226.49,
    "s": 59.684,
    "l": 50.392
  },
  "oklch": {
    "l": 0.50301,
    "c": 0.18551,
    "h": 267
  },
  "luminance": 0.11933
}

Semantic roles & 50–950 ramp

primary

#3557CC

secondary

#D0C18D

accent

#BF45E3

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3557CC

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

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