#3871C8#3871C8

#3871C8 is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.5% C 0.148 H 258.7°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3871C8
RGB	rgb(56, 113, 200)
HSL	hsl(216, 57%, 50%)
HSV	hsv(216, 72%, 78%)
CMYK	cmyk(72%, 43.5%, 0%, 21.6%)
CIE-LAB	lab(48.03, 10.91, -50.73)
CIE-LCH	lch(48.03, 51.89, 282.14°)
OKLab	oklab(55.52% -0.0289 -0.1451)
OKLCH	oklch(55.52% 0.148 258.7)
XYZ	xyz(17.9576, 16.8192, 56.9324)
Luminance	0.1682 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3871C8 #C88F38

analogous

#38B9C8 #3871C8 #4738C8

triadic

#3871C8 #C83871 #71C838

tetradic

#3871C8 #C838B9 #C88F38 #38C847

square

#3871C8 #C838B9 #C88F38 #38C847

split-complementary

#3871C8 #C84738 #B9C838

monochromatic

#1D3B69 #2A5699 #3871C8 #6893D5 #98B5E3

Accessibility & contrast

On white

4.81

#3871C8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.36

#3871C8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3871C8

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3871C8	#FFFFFF	#000000	##FFFFFF
##3871C8	1.00	4.81	4.36	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.36	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4679CB

Deuteranopia (green-blind)

#2C6CC6

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3871c8;
/* rgb */ color: rgb(56, 113, 200);
/* oklch */ color: oklch(55.5% 0.148 258.7);

Tailwind

colors: {
  custom: {
    50: '#8099d9',
    500: '#3871c8',
    950: '#000000',
  },
}

SCSS

$custom: #3871c8;
$custom-light: #8099d9;
$custom-dark: #000000;

JSON

{
  "hex": "#3871c8",
  "rgb": {
    "r": 56,
    "g": 113,
    "b": 200
  },
  "hsl": {
    "h": 216.25,
    "s": 56.693,
    "l": 50.196
  },
  "oklch": {
    "l": 0.55523,
    "c": 0.14796,
    "h": 258.7
  },
  "luminance": 0.16821
}

Semantic roles & 50–950 ramp

primary

#3871C8

secondary

#CEB58E

accent

#A448E0

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3871C8

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

Preview Lab → · Contrast checker → · Palette generator →