#3553B0#3553B0

#3553B0 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.3% C 0.152 H 267.0°. Best body text is #FFFFFF at 6.96:1 contrast (WCAG AA passes).

Color values

HEX	#3553B0
RGB	rgb(53, 83, 176)
HSL	hsl(225, 54%, 45%)
HSV	hsv(225, 70%, 69%)
CMYK	cmyk(69.9%, 52.8%, 0%, 31%)
CIE-LAB	lab(37.98, 20.89, -52.93)
CIE-LCH	lch(37.98, 56.90, 291.53°)
OKLab	oklab(47.3% -0.0081 -0.1521)
OKLCH	oklch(47.3% 0.152 267)
XYZ	xyz(12.3952, 10.0767, 42.3576)
Luminance	0.1008 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3553B0 #B09235

analogous

#3590B0 #3553B0 #5535B0

triadic

#3553B0 #B03553 #53B035

tetradic

#3553B0 #B03590 #B09235 #35B055

square

#3553B0 #B03590 #B09235 #35B055

split-complementary

#3553B0 #B05535 #90B035

monochromatic

#192752 #273D81 #3553B0 #5673CC #859ADA

Accessibility & contrast

On white

6.96

#3553B0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.02

#3553B0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3553B0

6.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3553B0	#FFFFFF	#000000	##FFFFFF
##3553B0	1.00	6.96	3.02	6.96
#FFFFFF	6.96	1.00	21.00	1.00
#000000	3.02	21.00	1.00	21.00
##FFFFFF	6.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#155FB3

Deuteranopia (green-blind)

#0054AE

Tritanopia (blue-blind)

#006979

Achromatopsia (no color)

#595959

Design tokens & code

CSS

--color: #3553b0;
/* rgb */ color: rgb(53, 83, 176);
/* oklch */ color: oklch(47.3% 0.152 267.0);

Tailwind

colors: {
  custom: {
    50: '#7b82c8',
    500: '#3553b0',
    950: '#000000',
  },
}

SCSS

$custom: #3553b0;
$custom-light: #7b82c8;
$custom-dark: #000000;

JSON

{
  "hex": "#3553b0",
  "rgb": {
    "r": 53,
    "g": 83,
    "b": 176
  },
  "hsl": {
    "h": 225.366,
    "s": 53.712,
    "l": 44.902
  },
  "oklch": {
    "l": 0.47296,
    "c": 0.15237,
    "h": 267
  },
  "luminance": 0.10078
}

Semantic roles & 50–950 ramp

primary

#3553B0

secondary

#C4B37D

accent

#B94BDD

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3553B0

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

Preview Lab → · Contrast checker → · Palette generator →