#3553BC#3553BC

#3553BC is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.2% C 0.169 H 267.5°. Best body text is #FFFFFF at 6.74:1 contrast (WCAG AA passes).

Color values

HEX	#3553BC
RGB	rgb(53, 83, 188)
HSL	hsl(227, 56%, 47%)
HSV	hsv(227, 72%, 74%)
CMYK	cmyk(71.8%, 55.9%, 0%, 26.3%)
CIE-LAB	lab(38.85, 25.32, -58.58)
CIE-LCH	lch(38.85, 63.81, 293.37°)
OKLab	oklab(48.23% -0.0072 -0.1688)
OKLCH	oklch(48.23% 0.169 267.5)
XYZ	xyz(13.6354, 10.5728, 48.8894)
Luminance	0.1057 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3553BC #BC9E35

analogous

#3596BC #3553BC #5B35BC

triadic

#3553BC #BC3553 #53BC35

tetradic

#3553BC #BC3596 #BC9E35 #35BC5B

square

#3553BC #BC3596 #BC9E35 #35BC5B

split-complementary

#3553BC #BC5B35 #96BC35

monochromatic

#1A295D #283E8C #3553BC #5D77D1 #8D9FDF

Accessibility & contrast

On white

6.74

#3553BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.11

#3553BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3553BC

6.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3553BC	#FFFFFF	#000000	##FFFFFF
##3553BC	1.00	6.74	3.11	6.74
#FFFFFF	6.74	1.00	21.00	1.00
#000000	3.11	21.00	1.00	21.00
##FFFFFF	6.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0062C0

Deuteranopia (green-blind)

#0056BA

Tritanopia (blue-blind)

#006D7F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3553bc;
/* rgb */ color: rgb(53, 83, 188);
/* oklch */ color: oklch(48.2% 0.169 267.5);

Tailwind

colors: {
  custom: {
    50: '#7e82d1',
    500: '#3553bc',
    950: '#000000',
  },
}

SCSS

$custom: #3553bc;
$custom-light: #7e82d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3553bc",
  "rgb": {
    "r": 53,
    "g": 83,
    "b": 188
  },
  "hsl": {
    "h": 226.667,
    "s": 56.017,
    "l": 47.255
  },
  "oklch": {
    "l": 0.48229,
    "c": 0.16892,
    "h": 267.5
  },
  "luminance": 0.10574
}

Semantic roles & 50–950 ramp

primary

#3553BC

secondary

#C9BA84

accent

#BE48DF

background

#F8F7FC

surface

#EFEEF9

border

#CAC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3553BC

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

Preview Lab → · Contrast checker → · Palette generator →