#3873AB#3873AB

#3873AB is a mid, moderate cyan. Relative luminance 0.160; OKLCH L 54.2% C 0.107 H 249.4°. Best body text is #FFFFFF at 4.99:1 contrast (WCAG AA passes).

Color values

HEX	#3873AB
RGB	rgb(56, 115, 171)
HSL	hsl(209, 51%, 45%)
HSV	hsv(209, 67%, 67%)
CMYK	cmyk(67.3%, 32.7%, 0%, 32.9%)
CIE-LAB	lab(47.03, -0.81, -35.54)
CIE-LCH	lch(47.03, 35.55, 268.69°)
OKLab	oklab(54.23% -0.0378 -0.1006)
OKLCH	oklch(54.23% 0.107 249.4)
XYZ	xyz(15.1096, 16.0409, 40.8201)
Luminance	0.1604 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3873AB #AB7038

analogous

#38ABAA #3873AB #383AAB

triadic

#3873AB #AB3873 #73AB38

tetradic

#3873AB #AA38AB #AB7038 #3AAB38

square

#3873AB #AA38AB #AB7038 #3AAB38

split-complementary

#3873AB #AB383A #ABAA38

monochromatic

#1A354F #29547D #3873AB #5892C8 #86B0D7

Accessibility & contrast

On white

4.99

#3873AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.21

#3873AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3873AB

4.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3873AB	#FFFFFF	#000000	##FFFFFF
##3873AB	1.00	4.99	4.21	4.99
#FFFFFF	4.99	1.00	21.00	1.00
#000000	4.21	21.00	1.00	21.00
##FFFFFF	4.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A76AD

Deuteranopia (green-blind)

#4A6BAA

Tritanopia (blue-blind)

#008087

Achromatopsia (no color)

#6F6F6F

Design tokens & code

CSS

--color: #3873ab;
/* rgb */ color: rgb(56, 115, 171);
/* oklch */ color: oklch(54.2% 0.107 249.4);

Tailwind

colors: {
  custom: {
    50: '#7b9bc4',
    500: '#3873ab',
    950: '#000000',
  },
}

SCSS

$custom: #3873ab;
$custom-light: #7b9bc4;
$custom-dark: #000000;

JSON

{
  "hex": "#3873ab",
  "rgb": {
    "r": 56,
    "g": 115,
    "b": 171
  },
  "hsl": {
    "h": 209.217,
    "s": 50.661,
    "l": 44.51
  },
  "oklch": {
    "l": 0.54226,
    "c": 0.10749,
    "h": 249.4
  },
  "luminance": 0.16042
}

Semantic roles & 50–950 ramp

primary

#3873AB

secondary

#C19F7D

accent

#924EDA

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E12

muted

#7C7E81

Preview Lab

Preview with #3873AB

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

Preview Lab → · Contrast checker → · Palette generator →