#3879CC#3879CC

#3879CC is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.5% C 0.144 H 255.8°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3879CC
RGB	rgb(56, 121, 204)
HSL	hsl(214, 59%, 51%)
HSV	hsv(214, 73%, 80%)
CMYK	cmyk(72.5%, 40.7%, 0%, 20%)
CIE-LAB	lab(50.54, 7.40, -49.01)
CIE-LCH	lch(50.54, 49.56, 278.59°)
OKLab	oklab(57.54% -0.0353 -0.1399)
OKLCH	oklch(57.54% 0.144 255.8)
XYZ	xyz(19.3633, 18.8730, 59.7374)
Luminance	0.1888 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3879CC #CC8B38

analogous

#38C3CC #3879CC #4138CC

triadic

#3879CC #CC3879 #79CC38

tetradic

#3879CC #CC38C3 #CC8B38 #38CC41

square

#3879CC #CC38C3 #CC8B38 #38CC41

split-complementary

#3879CC #CC4138 #C3CC38

monochromatic

#1C406E #295C9E #3879CC #699AD8 #99BBE5

Accessibility & contrast

On white

4.40

#3879CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#3879CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3879CC

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3879CC	#FFFFFF	#000000	##000000
##3879CC	1.00	4.40	4.78	4.78
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5280CF

Deuteranopia (green-blind)

#3972CA

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3879cc;
/* rgb */ color: rgb(56, 121, 204);
/* oklch */ color: oklch(57.5% 0.144 255.8);

Tailwind

colors: {
  custom: {
    50: '#819fdc',
    500: '#3879cc',
    950: '#000000',
  },
}

SCSS

$custom: #3879cc;
$custom-light: #819fdc;
$custom-dark: #000000;

JSON

{
  "hex": "#3879cc",
  "rgb": {
    "r": 56,
    "g": 121,
    "b": 204
  },
  "hsl": {
    "h": 213.649,
    "s": 59.2,
    "l": 50.98
  },
  "oklch": {
    "l": 0.57542,
    "c": 0.14431,
    "h": 255.8
  },
  "luminance": 0.18875
}

Semantic roles & 50–950 ramp

primary

#3879CC

secondary

#D1B48F

accent

#9D45E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3879CC

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

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