#3557D0#3557D0

#3557D0 is a mid, vivid blue. Relative luminance 0.121; OKLCH L 50.6% C 0.191 H 267.2°. Best body text is #FFFFFF at 6.13:1 contrast (WCAG AA passes).

Color values

HEX	#3557D0
RGB	rgb(53, 87, 208)
HSL	hsl(227, 62%, 51%)
HSV	hsv(227, 75%, 82%)
CMYK	cmyk(74.5%, 58.2%, 0%, 18.4%)
CIE-LAB	lab(41.41, 30.07, -66.01)
CIE-LCH	lch(41.41, 72.54, 294.49°)
OKLab	oklab(50.63% -0.0094 -0.1906)
OKLCH	oklch(50.63% 0.191 267.2)
XYZ	xyz(16.2576, 12.1256, 61.1459)
Luminance	0.1213 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3557D0 #D0AE35

analogous

#35A4D0 #3557D0 #6035D0

triadic

#3557D0 #D03557 #57D035

tetradic

#3557D0 #D035A4 #D0AE35 #35D060

square

#3557D0 #D035A4 #D0AE35 #35D060

split-complementary

#3557D0 #D06035 #A4D035

monochromatic

#1A2D70 #2641A2 #3557D0 #6780DC #98AAE7

Accessibility & contrast

On white

6.13

#3557D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.43

#3557D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3557D0

6.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3557D0	#FFFFFF	#000000	##FFFFFF
##3557D0	1.00	6.13	3.43	6.13
#FFFFFF	6.13	1.00	21.00	1.00
#000000	3.43	21.00	1.00	21.00
##FFFFFF	6.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069D4

Deuteranopia (green-blind)

#005BCE

Tritanopia (blue-blind)

#00758B

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3557d0;
/* rgb */ color: rgb(53, 87, 208);
/* oklch */ color: oklch(50.6% 0.191 267.2);

Tailwind

colors: {
  custom: {
    50: '#8286df',
    500: '#3557d0',
    950: '#000000',
  },
}

SCSS

$custom: #3557d0;
$custom-light: #8286df;
$custom-dark: #000000;

JSON

{
  "hex": "#3557d0",
  "rgb": {
    "r": 53,
    "g": 87,
    "b": 208
  },
  "hsl": {
    "h": 226.839,
    "s": 62.249,
    "l": 51.176
  },
  "oklch": {
    "l": 0.50628,
    "c": 0.19079,
    "h": 267.2
  },
  "luminance": 0.12127
}

Semantic roles & 50–950 ramp

primary

#3557D0

secondary

#D3C48E

accent

#C242E5

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3557D0

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

Preview Lab → · Contrast checker → · Palette generator →