#3871C7#3871C7

#3871C7 is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.5% C 0.147 H 258.6°. Best body text is #FFFFFF at 4.82:1 contrast (WCAG AA passes).

Color values

HEX	#3871C7
RGB	rgb(56, 113, 199)
HSL	hsl(216, 56%, 50%)
HSV	hsv(216, 72%, 78%)
CMYK	cmyk(71.9%, 43.2%, 0%, 22%)
CIE-LAB	lab(47.97, 10.54, -50.25)
CIE-LCH	lch(47.97, 51.34, 281.85°)
OKLab	oklab(55.46% -0.0291 -0.1437)
OKLCH	oklch(55.46% 0.147 258.6)
XYZ	xyz(17.8411, 16.7726, 56.3189)
Luminance	0.1678 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3871C7 #C78E38

analogous

#38B8C7 #3871C7 #4738C7

triadic

#3871C7 #C73871 #71C738

tetradic

#3871C7 #C738B8 #C78E38 #38C747

square

#3871C7 #C738B8 #C78E38 #38C747

split-complementary

#3871C7 #C74738 #B8C738

monochromatic

#1D3B67 #2B5697 #3871C7 #6893D4 #98B5E2

Accessibility & contrast

On white

4.82

#3871C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.35

#3871C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3871C7

4.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3871C7	#FFFFFF	#000000	##FFFFFF
##3871C7	1.00	4.82	4.35	4.82
#FFFFFF	4.82	1.00	21.00	1.00
#000000	4.35	21.00	1.00	21.00
##FFFFFF	4.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4779CA

Deuteranopia (green-blind)

#2D6CC5

Tritanopia (blue-blind)

#008592

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3871c7;
/* rgb */ color: rgb(56, 113, 199);
/* oklch */ color: oklch(55.5% 0.147 258.6);

Tailwind

colors: {
  custom: {
    50: '#8099d8',
    500: '#3871c7',
    950: '#000000',
  },
}

SCSS

$custom: #3871c7;
$custom-light: #8099d8;
$custom-dark: #000000;

JSON

{
  "hex": "#3871c7",
  "rgb": {
    "r": 56,
    "g": 113,
    "b": 199
  },
  "hsl": {
    "h": 216.084,
    "s": 56.078,
    "l": 50
  },
  "oklch": {
    "l": 0.55458,
    "c": 0.14662,
    "h": 258.6
  },
  "luminance": 0.16775
}

Semantic roles & 50–950 ramp

primary

#3871C7

secondary

#CDB48D

accent

#A348DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D14

muted

#7D7E83

Preview Lab

Preview with #3871C7

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

Preview Lab → · Contrast checker → · Palette generator →