#3551C4#3551C4

#3551C4 is a mid, vivid blue. Relative luminance 0.106; OKLCH L 48.5% C 0.182 H 268.3°. Best body text is #FFFFFF at 6.72:1 contrast (WCAG AA passes).

Color values

HEX	#3551C4
RGB	rgb(53, 81, 196)
HSL	hsl(228, 57%, 49%)
HSV	hsv(228, 73%, 77%)
CMYK	cmyk(73%, 58.7%, 0%, 23.1%)
CIE-LAB	lab(38.94, 29.55, -63.10)
CIE-LCH	lch(38.94, 69.67, 295.09°)
OKLab	oklab(48.49% -0.0054 -0.1821)
OKLCH	oklch(48.49% 0.182 268.3)
XYZ	xyz(14.3710, 10.6258, 53.5074)
Luminance	0.1063 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3551C4 #C4A835

analogous

#3599C4 #3551C4 #6135C4

triadic

#3551C4 #C43551 #51C435

tetradic

#3551C4 #C43599 #C4A835 #35C461

square

#3551C4 #C43599 #C4A835 #35C461

split-complementary

#3551C4 #C46135 #99C435

monochromatic

#1B2964 #283D94 #3551C4 #6278D4 #92A1E1

Accessibility & contrast

On white

6.72

#3551C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3551C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3551C4

6.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3551C4	#FFFFFF	#000000	##FFFFFF
##3551C4	1.00	6.72	3.13	6.72
#FFFFFF	6.72	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0063C8

Deuteranopia (green-blind)

#0055C2

Tritanopia (blue-blind)

#006E82

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3551c4;
/* rgb */ color: rgb(53, 81, 196);
/* oklch */ color: oklch(48.5% 0.182 268.3);

Tailwind

colors: {
  custom: {
    50: '#8081d7',
    500: '#3551c4',
    950: '#000000',
  },
}

SCSS

$custom: #3551c4;
$custom-light: #8081d7;
$custom-dark: #000000;

JSON

{
  "hex": "#3551c4",
  "rgb": {
    "r": 53,
    "g": 81,
    "b": 196
  },
  "hsl": {
    "h": 228.252,
    "s": 57.43,
    "l": 48.824
  },
  "oklch": {
    "l": 0.4849,
    "c": 0.18215,
    "h": 268.3
  },
  "luminance": 0.10627
}

Semantic roles & 50–950 ramp

primary

#3551C4

secondary

#CCBF88

accent

#C347E1

background

#F8F7FD

surface

#F0EEFA

border

#CBC9D3

text

#0C0A14

muted

#7D7C83

Preview Lab

Preview with #3551C4

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

Preview Lab → · Contrast checker → · Palette generator →