#3879CB#3879CB

#3879CB is a mid, vivid cyan. Relative luminance 0.188; OKLCH L 57.5% C 0.143 H 255.6°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3879CB
RGB	rgb(56, 121, 203)
HSL	hsl(213, 59%, 51%)
HSV	hsv(213, 72%, 80%)
CMYK	cmyk(72.4%, 40.4%, 0%, 20.4%)
CIE-LAB	lab(50.48, 7.04, -48.53)
CIE-LCH	lch(50.48, 49.04, 278.25°)
OKLab	oklab(57.48% -0.0355 -0.1385)
OKLCH	oklch(57.48% 0.143 255.6)
XYZ	xyz(19.2438, 18.8252, 59.1078)
Luminance	0.1883 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3879CB #CB8A38

analogous

#38C3CB #3879CB #4038CB

triadic

#3879CB #CB3879 #79CB38

tetradic

#3879CB #CB38C3 #CB8A38 #38CB40

square

#3879CB #CB38C3 #CB8A38 #38CB40

split-complementary

#3879CB #CB4038 #C3CB38

monochromatic

#1C406C #295C9D #3879CB #699AD8 #99BAE4

Accessibility & contrast

On white

4.41

#3879CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#3879CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3879CB

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3879CB	#FFFFFF	#000000	##000000
##3879CB	1.00	4.41	4.77	4.77
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5280CE

Deuteranopia (green-blind)

#3A72C9

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3879cb;
/* rgb */ color: rgb(56, 121, 203);
/* oklch */ color: oklch(57.5% 0.143 255.6);

Tailwind

colors: {
  custom: {
    50: '#819fdb',
    500: '#3879cb',
    950: '#000000',
  },
}

SCSS

$custom: #3879cb;
$custom-light: #819fdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3879cb",
  "rgb": {
    "r": 56,
    "g": 121,
    "b": 203
  },
  "hsl": {
    "h": 213.469,
    "s": 58.566,
    "l": 50.784
  },
  "oklch": {
    "l": 0.5748,
    "c": 0.143,
    "h": 255.6
  },
  "luminance": 0.18827
}

Semantic roles & 50–950 ramp

primary

#3879CB

secondary

#D0B38F

accent

#9D46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3879CB

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

Preview Lab → · Contrast checker → · Palette generator →