#3551AB#3551AB

#3551AB is a mid, vivid blue. Relative luminance 0.096; OKLCH L 46.5% C 0.148 H 267.4°. Best body text is #FFFFFF at 7.20:1 contrast (WCAG AA passes).

Color values

HEX	#3551AB
RGB	rgb(53, 81, 171)
HSL	hsl(226, 53%, 44%)
HSV	hsv(226, 69%, 67%)
CMYK	cmyk(69%, 52.6%, 0%, 32.9%)
CIE-LAB	lab(37.08, 20.35, -51.42)
CIE-LCH	lch(37.08, 55.30, 291.59°)
OKLab	oklab(46.5% -0.0068 -0.1477)
OKLCH	oklch(46.5% 0.148 267.4)
XYZ	xyz(11.7588, 9.5809, 39.7498)
Luminance	0.0958 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3551AB #AB8F35

analogous

#358CAB #3551AB #5435AB

triadic

#3551AB #AB3551 #51AB35

tetradic

#3551AB #AB358C #AB8F35 #35AB54

square

#3551AB #AB358C #AB8F35 #35AB54

split-complementary

#3551AB #AB5435 #8CAB35

monochromatic

#18254E #273B7C #3551AB #536FCA #8297D8

Accessibility & contrast

On white

7.20

#3551AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.92

#3551AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3551AB

7.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3551AB	#FFFFFF	#000000	##FFFFFF
##3551AB	1.00	7.20	2.92	7.20
#FFFFFF	7.20	1.00	21.00	1.00
#000000	2.92	21.00	1.00	21.00
##FFFFFF	7.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#175DAE

Deuteranopia (green-blind)

#0052A9

Tritanopia (blue-blind)

#006676

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3551ab;
/* rgb */ color: rgb(53, 81, 171);
/* oklch */ color: oklch(46.5% 0.148 267.4);

Tailwind

colors: {
  custom: {
    50: '#7a81c5',
    500: '#3551ab',
    950: '#000000',
  },
}

SCSS

$custom: #3551ab;
$custom-light: #7a81c5;
$custom-dark: #000000;

JSON

{
  "hex": "#3551ab",
  "rgb": {
    "r": 53,
    "g": 81,
    "b": 171
  },
  "hsl": {
    "h": 225.763,
    "s": 52.679,
    "l": 43.922
  },
  "oklch": {
    "l": 0.46502,
    "c": 0.14791,
    "h": 267.4
  },
  "luminance": 0.09582
}

Semantic roles & 50–950 ramp

primary

#3551AB

secondary

#C2B17A

accent

#BA4CDC

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0A0A13

muted

#7C7C82

Preview Lab

Preview with #3551AB

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

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