#3553B9#3553B9

#3553B9 is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.0% C 0.165 H 267.4°. Best body text is #FFFFFF at 6.80:1 contrast (WCAG AA passes).

Color values

HEX	#3553B9
RGB	rgb(53, 83, 185)
HSL	hsl(226, 55%, 47%)
HSV	hsv(226, 71%, 73%)
CMYK	cmyk(71.4%, 55.1%, 0%, 27.5%)
CIE-LAB	lab(38.63, 24.21, -57.18)
CIE-LCH	lch(38.63, 62.09, 292.95°)
OKLab	oklab(47.99% -0.0074 -0.1646)
OKLCH	oklch(47.99% 0.165 267.4)
XYZ	xyz(13.3154, 10.4448, 47.2038)
Luminance	0.1045 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3553B9 #B99B35

analogous

#3595B9 #3553B9 #5935B9

triadic

#3553B9 #B93553 #53B935

tetradic

#3553B9 #B93595 #B99B35 #35B959

square

#3553B9 #B93595 #B99B35 #35B959

split-complementary

#3553B9 #B95935 #95B935

monochromatic

#1A285A #273E89 #3553B9 #5B76D0 #8B9EDE

Accessibility & contrast

On white

6.80

#3553B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.09

#3553B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3553B9

6.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3553B9	#FFFFFF	#000000	##FFFFFF
##3553B9	1.00	6.80	3.09	6.80
#FFFFFF	6.80	1.00	21.00	1.00
#000000	3.09	21.00	1.00	21.00
##FFFFFF	6.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061BD

Deuteranopia (green-blind)

#0055B7

Tritanopia (blue-blind)

#006C7E

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3553b9;
/* rgb */ color: rgb(53, 83, 185);
/* oklch */ color: oklch(48.0% 0.165 267.4);

Tailwind

colors: {
  custom: {
    50: '#7d82cf',
    500: '#3553b9',
    950: '#000000',
  },
}

SCSS

$custom: #3553b9;
$custom-light: #7d82cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3553b9",
  "rgb": {
    "r": 53,
    "g": 83,
    "b": 185
  },
  "hsl": {
    "h": 226.364,
    "s": 55.462,
    "l": 46.667
  },
  "oklch": {
    "l": 0.47992,
    "c": 0.16482,
    "h": 267.4
  },
  "luminance": 0.10446
}

Semantic roles & 50–950 ramp

primary

#3553B9

secondary

#C8B882

accent

#BD49DF

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3553B9

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

Preview Lab → · Contrast checker → · Palette generator →