#3873C6#3873C6

#3873C6 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 55.8% C 0.143 H 257.4°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3873C6
RGB	rgb(56, 115, 198)
HSL	hsl(215, 56%, 50%)
HSV	hsv(215, 72%, 78%)
CMYK	cmyk(71.7%, 41.9%, 0%, 22.4%)
CIE-LAB	lab(48.48, 8.93, -48.86)
CIE-LCH	lch(48.48, 49.67, 280.35°)
OKLab	oklab(55.84% -0.0311 -0.1396)
OKLCH	oklch(55.84% 0.143 257.4)
XYZ	xyz(17.9509, 17.1775, 55.7847)
Luminance	0.1718 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3873C6 #C68B38

analogous

#38BAC6 #3873C6 #4438C6

triadic

#3873C6 #C63873 #73C638

tetradic

#3873C6 #C638BA #C68B38 #38C644

square

#3873C6 #C638BA #C68B38 #38C644

split-complementary

#3873C6 #C64438 #BAC638

monochromatic

#1D3C67 #2B5796 #3873C6 #6794D4 #97B6E2

Accessibility & contrast

On white

4.73

#3873C6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3873C6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3873C6

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3873C6	#FFFFFF	#000000	##FFFFFF
##3873C6	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B7AC9

Deuteranopia (green-blind)

#336DC4

Tritanopia (blue-blind)

#008693

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3873c6;
/* rgb */ color: rgb(56, 115, 198);
/* oklch */ color: oklch(55.8% 0.143 257.4);

Tailwind

colors: {
  custom: {
    50: '#809ad8',
    500: '#3873c6',
    950: '#000000',
  },
}

SCSS

$custom: #3873c6;
$custom-light: #809ad8;
$custom-dark: #000000;

JSON

{
  "hex": "#3873c6",
  "rgb": {
    "r": 56,
    "g": 115,
    "b": 198
  },
  "hsl": {
    "h": 215.07,
    "s": 55.906,
    "l": 49.804
  },
  "oklch": {
    "l": 0.55835,
    "c": 0.14302,
    "h": 257.4
  },
  "luminance": 0.17179
}

Semantic roles & 50–950 ramp

primary

#3873C6

secondary

#CDB28D

accent

#A149DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3873C6

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

Preview Lab → · Contrast checker → · Palette generator →