#3873B4#3873B4

#3873B4 is a mid, moderate cyan. Relative luminance 0.164; OKLCH L 54.7% C 0.119 H 252.7°. Best body text is #FFFFFF at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3873B4
RGB	rgb(56, 115, 180)
HSL	hsl(211, 53%, 46%)
HSV	hsv(211, 69%, 71%)
CMYK	cmyk(68.9%, 36.1%, 0%, 29.4%)
CIE-LAB	lab(47.49, 2.40, -40.05)
CIE-LCH	lch(47.49, 40.12, 273.42°)
OKLab	oklab(54.74% -0.0353 -0.1138)
OKLCH	oklch(54.74% 0.119 252.7)
XYZ	xyz(15.9968, 16.3958, 45.4928)
Luminance	0.1640 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3873B4 #B47938

analogous

#38B1B4 #3873B4 #3B38B4

triadic

#3873B4 #B43873 #73B438

tetradic

#3873B4 #B438B1 #B47938 #38B43B

square

#3873B4 #B438B1 #B47938 #38B43B

split-complementary

#3873B4 #B43B38 #B1B438

monochromatic

#1B3757 #295585 #3873B4 #5D92CD #8BB1DB

Accessibility & contrast

On white

4.91

#3873B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.28

#3873B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3873B4

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3873B4	#FFFFFF	#000000	##FFFFFF
##3873B4	1.00	4.91	4.28	4.91
#FFFFFF	4.91	1.00	21.00	1.00
#000000	4.28	21.00	1.00	21.00
##FFFFFF	4.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5677B7

Deuteranopia (green-blind)

#446BB3

Tritanopia (blue-blind)

#00828B

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #3873b4;
/* rgb */ color: rgb(56, 115, 180);
/* oklch */ color: oklch(54.7% 0.119 252.7);

Tailwind

colors: {
  custom: {
    50: '#7d9acb',
    500: '#3873b4',
    950: '#000000',
  },
}

SCSS

$custom: #3873b4;
$custom-light: #7d9acb;
$custom-dark: #000000;

JSON

{
  "hex": "#3873b4",
  "rgb": {
    "r": 56,
    "g": 115,
    "b": 180
  },
  "hsl": {
    "h": 211.452,
    "s": 52.542,
    "l": 46.275
  },
  "oklch": {
    "l": 0.54738,
    "c": 0.11914,
    "h": 252.7
  },
  "luminance": 0.16398
}

Semantic roles & 50–950 ramp

primary

#3873B4

secondary

#C5A682

accent

#974CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3873B4

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

Preview Lab → · Contrast checker → · Palette generator →