#3871CD#3871CD

#3871CD is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.9% C 0.155 H 259.6°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3871CD
RGB	rgb(56, 113, 205)
HSL	hsl(217, 60%, 51%)
HSV	hsv(217, 73%, 80%)
CMYK	cmyk(72.7%, 44.9%, 0%, 19.6%)
CIE-LAB	lab(48.33, 12.74, -53.11)
CIE-LCH	lch(48.33, 54.61, 283.49°)
OKLab	oklab(55.85% -0.028 -0.1521)
OKLCH	oklch(55.85% 0.155 259.6)
XYZ	xyz(18.5515, 17.0568, 60.0603)
Luminance	0.1706 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3871CD #CD9438

analogous

#38BBCD #3871CD #4938CD

triadic

#3871CD #CD3871 #71CD38

tetradic

#3871CD #CD38BB #CD9438 #38CD49

square

#3871CD #CD38BB #CD9438 #38CD49

split-complementary

#3871CD #CD4938 #BBCD38

monochromatic

#1C3C6F #2856A0 #3871CD #6994D9 #9AB7E6

Accessibility & contrast

On white

4.76

#3871CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#3871CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3871CD

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3871CD	#FFFFFF	#000000	##FFFFFF
##3871CD	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#427AD0

Deuteranopia (green-blind)

#246CCB

Tritanopia (blue-blind)

#008795

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3871cd;
/* rgb */ color: rgb(56, 113, 205);
/* oklch */ color: oklch(55.9% 0.155 259.6);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3871cd",
  "rgb": {
    "r": 56,
    "g": 113,
    "b": 205
  },
  "hsl": {
    "h": 217.047,
    "s": 59.839,
    "l": 51.176
  },
  "oklch": {
    "l": 0.55852,
    "c": 0.15466,
    "h": 259.6
  },
  "luminance": 0.17059
}

Semantic roles & 50–950 ramp

primary

#3871CD

secondary

#D1B88F

accent

#A645E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3871CD

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

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