#3551BE#3551BE

#3551BE is a mid, vivid blue. Relative luminance 0.104; OKLCH L 48.0% C 0.174 H 268.2°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#3551BE
RGB	rgb(53, 81, 190)
HSL	hsl(228, 56%, 48%)
HSV	hsv(228, 72%, 75%)
CMYK	cmyk(72.1%, 57.4%, 0%, 25.5%)
CIE-LAB	lab(38.48, 27.35, -60.36)
CIE-LCH	lch(38.48, 66.26, 294.38°)
OKLab	oklab(48% -0.0056 -0.174)
OKLCH	oklch(48% 0.174 268.2)
XYZ	xyz(13.7017, 10.3580, 49.9824)
Luminance	0.1036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3551BE #BEA235

analogous

#3596BE #3551BE #5D35BE

triadic

#3551BE #BE3551 #51BE35

tetradic

#3551BE #BE3596 #BEA235 #35BE5D

square

#3551BE #BE3596 #BEA235 #35BE5D

split-complementary

#3551BE #BE5D35 #96BE35

monochromatic

#1A285E #283D8E #3551BE #5E76D2 #8E9FDF

Accessibility & contrast

On white

6.84

#3551BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3551BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3551BE

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3551BE	#FFFFFF	#000000	##FFFFFF
##3551BE	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061C2

Deuteranopia (green-blind)

#0054BC

Tritanopia (blue-blind)

#006C7F

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #3551be;
/* rgb */ color: rgb(53, 81, 190);
/* oklch */ color: oklch(48.0% 0.174 268.2);

Tailwind

colors: {
  custom: {
    50: '#7e81d2',
    500: '#3551be',
    950: '#000000',
  },
}

SCSS

$custom: #3551be;
$custom-light: #7e81d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3551be",
  "rgb": {
    "r": 53,
    "g": 81,
    "b": 190
  },
  "hsl": {
    "h": 227.737,
    "s": 56.379,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47997,
    "c": 0.17411,
    "h": 268.2
  },
  "luminance": 0.10359
}

Semantic roles & 50–950 ramp

primary

#3551BE

secondary

#CABC85

accent

#C148E0

background

#F8F7FD

surface

#EFEEFA

border

#CAC9D3

text

#0B0A14

muted

#7C7C83

Preview Lab

Preview with #3551BE

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

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