#3557CF#3557CF

#3557CF is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.5% C 0.189 H 267.1°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#3557CF
RGB	rgb(53, 87, 207)
HSL	hsl(227, 62%, 51%)
HSV	hsv(227, 74%, 81%)
CMYK	cmyk(74.4%, 58%, 0%, 18.8%)
CIE-LAB	lab(41.34, 29.71, -65.56)
CIE-LCH	lch(41.34, 71.98, 294.38°)
OKLab	oklab(50.55% -0.0095 -0.1892)
OKLCH	oklch(50.55% 0.189 267.1)
XYZ	xyz(16.1350, 12.0765, 60.5000)
Luminance	0.1208 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3557CF #CFAD35

analogous

#35A4CF #3557CF #6035CF

triadic

#3557CF #CF3557 #57CF35

tetradic

#3557CF #CF35A4 #CFAD35 #35CF60

square

#3557CF #CF35A4 #CFAD35 #35CF60

split-complementary

#3557CF #CF6035 #A4CF35

monochromatic

#1A2D6F #2641A1 #3557CF #6680DB #98A9E7

Accessibility & contrast

On white

6.15

#3557CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.42

#3557CF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3557CF

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3557CF	#FFFFFF	#000000	##FFFFFF
##3557CF	1.00	6.15	3.42	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.42	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D3

Deuteranopia (green-blind)

#005BCD

Tritanopia (blue-blind)

#00758A

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3557cf;
/* rgb */ color: rgb(53, 87, 207);
/* oklch */ color: oklch(50.5% 0.189 267.1);

Tailwind

colors: {
  custom: {
    50: '#8286df',
    500: '#3557cf',
    950: '#000000',
  },
}

SCSS

$custom: #3557cf;
$custom-light: #8286df;
$custom-dark: #000000;

JSON

{
  "hex": "#3557cf",
  "rgb": {
    "r": 53,
    "g": 87,
    "b": 207
  },
  "hsl": {
    "h": 226.753,
    "s": 61.6,
    "l": 50.98
  },
  "oklch": {
    "l": 0.50546,
    "c": 0.18948,
    "h": 267.1
  },
  "luminance": 0.12078
}

Semantic roles & 50–950 ramp

primary

#3557CF

secondary

#D2C38E

accent

#C143E5

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3557CF

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

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