#3877BB#3877BB

#3877BB is a mid, vivid cyan. Relative luminance 0.176; OKLCH L 56.1% C 0.124 H 252.4°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3877BB
RGB	rgb(56, 119, 187)
HSL	hsl(211, 54%, 48%)
HSV	hsv(211, 70%, 73%)
CMYK	cmyk(70.1%, 36.4%, 0%, 26.7%)
CIE-LAB	lab(49.03, 2.47, -41.66)
CIE-LCH	lch(49.03, 41.73, 273.39°)
OKLab	oklab(56.07% -0.0375 -0.1184)
OKLCH	oklch(56.07% 0.124 252.4)
XYZ	xyz(17.1940, 17.6204, 49.4990)
Luminance	0.1762 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3877BB #BB7C38

analogous

#38B8BB #3877BB #3B38BB

triadic

#3877BB #BB3877 #77BB38

tetradic

#3877BB #BB38B8 #BB7C38 #38BB3B

square

#3877BB #BB38B8 #BB7C38 #38BB3B

split-complementary

#3877BB #BB3B38 #B8BB38

monochromatic

#1C3B5D #2A598C #3877BB #6196D0 #90B5DE

Accessibility & contrast

On white

4.64

#3877BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.52

#3877BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3877BB

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3877BB	#FFFFFF	#000000	##FFFFFF
##3877BB	1.00	4.64	4.52	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.52	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#587BBE

Deuteranopia (green-blind)

#456FBA

Tritanopia (blue-blind)

#008790

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3877bb;
/* rgb */ color: rgb(56, 119, 187);
/* oklch */ color: oklch(56.1% 0.124 252.4);

Tailwind

colors: {
  custom: {
    50: '#7e9dd0',
    500: '#3877bb',
    950: '#000000',
  },
}

SCSS

$custom: #3877bb;
$custom-light: #7e9dd0;
$custom-dark: #000000;

JSON

{
  "hex": "#3877bb",
  "rgb": {
    "r": 56,
    "g": 119,
    "b": 187
  },
  "hsl": {
    "h": 211.145,
    "s": 53.909,
    "l": 47.647
  },
  "oklch": {
    "l": 0.56066,
    "c": 0.12421,
    "h": 252.4
  },
  "luminance": 0.17622
}

Semantic roles & 50–950 ramp

primary

#3877BB

secondary

#C8A986

accent

#974BDD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3877BB

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

Preview Lab → · Contrast checker → · Palette generator →