#3553BF#3553BF

#3553BF is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.5% C 0.173 H 267.6°. Best body text is #FFFFFF at 6.69:1 contrast (WCAG AA passes).

Color values

HEX	#3553BF
RGB	rgb(53, 83, 191)
HSL	hsl(227, 57%, 48%)
HSV	hsv(227, 72%, 75%)
CMYK	cmyk(72.3%, 56.5%, 0%, 25.1%)
CIE-LAB	lab(39.08, 26.42, -59.97)
CIE-LCH	lch(39.08, 65.53, 293.78°)
OKLab	oklab(48.47% -0.0071 -0.1728)
OKLCH	oklch(48.47% 0.173 267.6)
XYZ	xyz(13.9622, 10.7035, 50.6103)
Luminance	0.1071 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3553BF #BFA135

analogous

#3598BF #3553BF #5C35BF

triadic

#3553BF #BF3553 #53BF35

tetradic

#3553BF #BF3598 #BFA135 #35BF5C

square

#3553BF #BF3598 #BFA135 #35BF5C

split-complementary

#3553BF #BF5C35 #98BF35

monochromatic

#1A295F #283E8F #3553BF #5F78D3 #8FA0E0

Accessibility & contrast

On white

6.69

#3553BF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#3553BF on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3553BF

6.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3553BF	#FFFFFF	#000000	##FFFFFF
##3553BF	1.00	6.69	3.14	6.69
#FFFFFF	6.69	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C3

Deuteranopia (green-blind)

#0056BD

Tritanopia (blue-blind)

#006E81

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3553bf;
/* rgb */ color: rgb(53, 83, 191);
/* oklch */ color: oklch(48.5% 0.173 267.6);

Tailwind

colors: {
  custom: {
    50: '#7f83d3',
    500: '#3553bf',
    950: '#000000',
  },
}

SCSS

$custom: #3553bf;
$custom-light: #7f83d3;
$custom-dark: #000000;

JSON

{
  "hex": "#3553bf",
  "rgb": {
    "r": 53,
    "g": 83,
    "b": 191
  },
  "hsl": {
    "h": 226.957,
    "s": 56.557,
    "l": 47.843
  },
  "oklch": {
    "l": 0.48469,
    "c": 0.17299,
    "h": 267.6
  },
  "luminance": 0.10705
}

Semantic roles & 50–950 ramp

primary

#3553BF

secondary

#CABB85

accent

#BF48E0

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3553BF

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

Preview Lab → · Contrast checker → · Palette generator →