#3873B8#3873B8

#3873B8 is a mid, vivid cyan. Relative luminance 0.166; OKLCH L 55.0% C 0.124 H 254.0°. Best body text is #FFFFFF at 4.87:1 contrast (WCAG AA passes).

Color values

HEX	#3873B8
RGB	rgb(56, 115, 184)
HSL	hsl(212, 53%, 47%)
HSV	hsv(212, 70%, 72%)
CMYK	cmyk(69.6%, 37.5%, 0%, 27.8%)
CIE-LAB	lab(47.70, 3.84, -42.03)
CIE-LCH	lch(47.70, 42.21, 275.22°)
OKLab	oklab(54.97% -0.0343 -0.1196)
OKLCH	oklch(54.97% 0.124 254)
XYZ	xyz(16.4102, 16.5612, 47.6699)
Luminance	0.1656 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3873B8 #B87D38

analogous

#38B3B8 #3873B8 #3D38B8

triadic

#3873B8 #B83873 #73B838

tetradic

#3873B8 #B838B3 #B87D38 #38B83D

square

#3873B8 #B838B3 #B87D38 #38B83D

split-complementary

#3873B8 #B83D38 #B3B838

monochromatic

#1B385A #2A5689 #3873B8 #5F92CE #8EB2DD

Accessibility & contrast

On white

4.87

#3873B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.31

#3873B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3873B8

4.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3873B8	#FFFFFF	#000000	##FFFFFF
##3873B8	1.00	4.87	4.31	4.87
#FFFFFF	4.87	1.00	21.00	1.00
#000000	4.31	21.00	1.00	21.00
##FFFFFF	4.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5478BB

Deuteranopia (green-blind)

#416CB7

Tritanopia (blue-blind)

#00838D

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3873b8;
/* rgb */ color: rgb(56, 115, 184);
/* oklch */ color: oklch(55.0% 0.124 254.0);

Tailwind

colors: {
  custom: {
    50: '#7d9acd',
    500: '#3873b8',
    950: '#000000',
  },
}

SCSS

$custom: #3873b8;
$custom-light: #7d9acd;
$custom-dark: #000000;

JSON

{
  "hex": "#3873b8",
  "rgb": {
    "r": 56,
    "g": 115,
    "b": 184
  },
  "hsl": {
    "h": 212.344,
    "s": 53.333,
    "l": 47.059
  },
  "oklch": {
    "l": 0.54974,
    "c": 0.1244,
    "h": 254
  },
  "luminance": 0.16563
}

Semantic roles & 50–950 ramp

primary

#3873B8

secondary

#C7A885

accent

#9A4BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3873B8

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

Preview Lab → · Contrast checker → · Palette generator →