#3871D0#3871D0

#3871D0 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.1% C 0.159 H 260.0°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3871D0
RGB	rgb(56, 113, 208)
HSL	hsl(218, 62%, 52%)
HSV	hsv(218, 73%, 82%)
CMYK	cmyk(73.1%, 45.7%, 0%, 18.4%)
CIE-LAB	lab(48.51, 13.85, -54.53)
CIE-LCH	lch(48.51, 56.26, 284.25°)
OKLab	oklab(56.05% -0.0275 -0.1563)
OKLCH	oklch(56.05% 0.159 260)
XYZ	xyz(18.9171, 17.2030, 61.9858)
Luminance	0.1721 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3871D0 #D09738

analogous

#38BDD0 #3871D0 #4B38D0

triadic

#3871D0 #D03871 #71D038

tetradic

#3871D0 #D038BD #D09738 #38D04B

square

#3871D0 #D038BD #D09738 #38D04B

split-complementary

#3871D0 #D04B38 #BDD038

monochromatic

#1B3C73 #2756A4 #3871D0 #6A94DC #9BB8E7

Accessibility & contrast

On white

4.73

#3871D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3871D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3871D0

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3871D0	#FFFFFF	#000000	##FFFFFF
##3871D0	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)

#407BD4

Deuteranopia (green-blind)

#1E6DCE

Tritanopia (blue-blind)

#008796

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3871d0;
/* rgb */ color: rgb(56, 113, 208);
/* oklch */ color: oklch(56.1% 0.159 260.0);

Tailwind

colors: {
  custom: {
    50: '#8299df',
    500: '#3871d0',
    950: '#000000',
  },
}

SCSS

$custom: #3871d0;
$custom-light: #8299df;
$custom-dark: #000000;

JSON

{
  "hex": "#3871d0",
  "rgb": {
    "r": 56,
    "g": 113,
    "b": 208
  },
  "hsl": {
    "h": 217.5,
    "s": 61.789,
    "l": 51.765
  },
  "oklch": {
    "l": 0.56052,
    "c": 0.15867,
    "h": 260
  },
  "luminance": 0.17205
}

Semantic roles & 50–950 ramp

primary

#3871D0

secondary

#D3BA91

accent

#A843E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3871D0

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

Preview Lab → · Contrast checker → · Palette generator →