#3871CE#3871CE

#3871CE is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.9% C 0.156 H 259.7°. Best body text is #FFFFFF at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3871CE
RGB	rgb(56, 113, 206)
HSL	hsl(217, 60%, 51%)
HSV	hsv(217, 73%, 81%)
CMYK	cmyk(72.8%, 45.1%, 0%, 19.2%)
CIE-LAB	lab(48.39, 13.11, -53.58)
CIE-LCH	lch(48.39, 55.16, 283.75°)
OKLab	oklab(55.92% -0.0278 -0.1535)
OKLCH	oklch(55.92% 0.156 259.7)
XYZ	xyz(18.6726, 17.1052, 60.6981)
Luminance	0.1711 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3871CE #CE9538

analogous

#38BCCE #3871CE #4A38CE

triadic

#3871CE #CE3871 #71CE38

tetradic

#3871CE #CE38BC #CE9538 #38CE4A

square

#3871CE #CE38BC #CE9538 #38CE4A

split-complementary

#3871CE #CE4A38 #BCCE38

monochromatic

#1C3C70 #2856A1 #3871CE #6994DA #9AB7E6

Accessibility & contrast

On white

4.75

#3871CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.42

#3871CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3871CE

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3871CE	#FFFFFF	#000000	##FFFFFF
##3871CE	1.00	4.75	4.42	4.75
#FFFFFF	4.75	1.00	21.00	1.00
#000000	4.42	21.00	1.00	21.00
##FFFFFF	4.75	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#417AD2

Deuteranopia (green-blind)

#226CCC

Tritanopia (blue-blind)

#008795

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3871ce;
/* rgb */ color: rgb(56, 113, 206);
/* oklch */ color: oklch(55.9% 0.156 259.7);

Tailwind

colors: {
  custom: {
    50: '#8199dd',
    500: '#3871ce',
    950: '#000000',
  },
}

SCSS

$custom: #3871ce;
$custom-light: #8199dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3871ce",
  "rgb": {
    "r": 56,
    "g": 113,
    "b": 206
  },
  "hsl": {
    "h": 217.2,
    "s": 60.484,
    "l": 51.373
  },
  "oklch": {
    "l": 0.55918,
    "c": 0.15601,
    "h": 259.7
  },
  "luminance": 0.17107
}

Semantic roles & 50–950 ramp

primary

#3871CE

secondary

#D2B990

accent

#A744E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3871CE

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

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