#3873B5#3873B5

#3873B5 is a mid, vivid cyan. Relative luminance 0.164; OKLCH L 54.8% C 0.120 H 253.1°. Best body text is #FFFFFF at 4.90:1 contrast (WCAG AA passes).

Color values

HEX	#3873B5
RGB	rgb(56, 115, 181)
HSL	hsl(212, 53%, 46%)
HSV	hsv(212, 69%, 71%)
CMYK	cmyk(69.1%, 36.5%, 0%, 29%)
CIE-LAB	lab(47.54, 2.76, -40.55)
CIE-LCH	lch(47.54, 40.64, 273.89°)
OKLab	oklab(54.8% -0.0351 -0.1152)
OKLCH	oklch(54.8% 0.12 253.1)
XYZ	xyz(16.0990, 16.4367, 46.0313)
Luminance	0.1644 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3873B5 #B57A38

analogous

#38B2B5 #3873B5 #3C38B5

triadic

#3873B5 #B53873 #73B538

tetradic

#3873B5 #B538B2 #B57A38 #38B53C

square

#3873B5 #B538B2 #B57A38 #38B53C

split-complementary

#3873B5 #B53C38 #B2B538

monochromatic

#1B3858 #2A5586 #3873B5 #5D92CD #8CB1DB

Accessibility & contrast

On white

4.90

#3873B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.29

#3873B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3873B5

4.90:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3873B5	#FFFFFF	#000000	##FFFFFF
##3873B5	1.00	4.90	4.29	4.90
#FFFFFF	4.90	1.00	21.00	1.00
#000000	4.29	21.00	1.00	21.00
##FFFFFF	4.90	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5577B8

Deuteranopia (green-blind)

#436BB4

Tritanopia (blue-blind)

#00828B

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3873b5;
/* rgb */ color: rgb(56, 115, 181);
/* oklch */ color: oklch(54.8% 0.120 253.1);

Tailwind

colors: {
  custom: {
    50: '#7d9acb',
    500: '#3873b5',
    950: '#000000',
  },
}

SCSS

$custom: #3873b5;
$custom-light: #7d9acb;
$custom-dark: #000000;

JSON

{
  "hex": "#3873b5",
  "rgb": {
    "r": 56,
    "g": 115,
    "b": 181
  },
  "hsl": {
    "h": 211.68,
    "s": 52.743,
    "l": 46.471
  },
  "oklch": {
    "l": 0.54797,
    "c": 0.12045,
    "h": 253.1
  },
  "luminance": 0.16438
}

Semantic roles & 50–950 ramp

primary

#3873B5

secondary

#C6A683

accent

#984CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3873B5

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

Preview Lab → · Contrast checker → · Palette generator →