#3551B2#3551B2

#3551B2 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.0% C 0.158 H 267.7°. Best body text is #FFFFFF at 7.07:1 contrast (WCAG AA passes).

Color values

HEX	#3551B2
RGB	rgb(53, 81, 178)
HSL	hsl(227, 54%, 45%)
HSV	hsv(227, 70%, 70%)
CMYK	cmyk(70.2%, 54.5%, 0%, 30.2%)
CIE-LAB	lab(37.58, 22.94, -54.76)
CIE-LCH	lch(37.58, 59.37, 292.73°)
OKLab	oklab(47.04% -0.0062 -0.1576)
OKLCH	oklch(47.04% 0.158 267.7)
XYZ	xyz(12.4437, 9.8548, 43.3572)
Luminance	0.0986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3551B2 #B29635

analogous

#358FB2 #3551B2 #5735B2

triadic

#3551B2 #B23551 #51B235

tetradic

#3551B2 #B2358F #B29635 #35B257

square

#3551B2 #B2358F #B29635 #35B257

split-complementary

#3551B2 #B25735 #8FB235

monochromatic

#192654 #273C83 #3551B2 #5772CD #8699DB

Accessibility & contrast

On white

7.07

#3551B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3551B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3551B2

7.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3551B2	#FFFFFF	#000000	##FFFFFF
##3551B2	1.00	7.07	2.97	7.07
#FFFFFF	7.07	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#035EB5

Deuteranopia (green-blind)

#0053B0

Tritanopia (blue-blind)

#006879

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3551b2;
/* rgb */ color: rgb(53, 81, 178);
/* oklch */ color: oklch(47.0% 0.158 267.7);

Tailwind

colors: {
  custom: {
    50: '#7c81ca',
    500: '#3551b2',
    950: '#000000',
  },
}

SCSS

$custom: #3551b2;
$custom-light: #7c81ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3551b2",
  "rgb": {
    "r": 53,
    "g": 81,
    "b": 178
  },
  "hsl": {
    "h": 226.56,
    "s": 54.113,
    "l": 45.294
  },
  "oklch": {
    "l": 0.4704,
    "c": 0.15768,
    "h": 267.7
  },
  "luminance": 0.09856
}

Semantic roles & 50–950 ramp

primary

#3551B2

secondary

#C5B57E

accent

#BD4ADD

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3551B2

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

Preview Lab → · Contrast checker → · Palette generator →