#3877BC#3877BC

#3877BC is a mid, vivid cyan. Relative luminance 0.177; OKLCH L 56.1% C 0.126 H 252.7°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3877BC
RGB	rgb(56, 119, 188)
HSL	hsl(211, 54%, 48%)
HSV	hsv(211, 70%, 74%)
CMYK	cmyk(70.2%, 36.7%, 0%, 26.3%)
CIE-LAB	lab(49.09, 2.83, -42.15)
CIE-LCH	lch(49.09, 42.25, 273.84°)
OKLab	oklab(56.12% -0.0372 -0.1199)
OKLCH	oklch(56.12% 0.126 252.7)
XYZ	xyz(17.3015, 17.6634, 50.0648)
Luminance	0.1767 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3877BC #BC7D38

analogous

#38B9BC #3877BC #3B38BC

triadic

#3877BC #BC3877 #77BC38

tetradic

#3877BC #BC38B9 #BC7D38 #38BC3B

square

#3877BC #BC38B9 #BC7D38 #38BC3B

split-complementary

#3877BC #BC3B38 #B9BC38

monochromatic

#1C3B5E #2A598D #3877BC #6196D0 #90B5DE

Accessibility & contrast

On white

4.63

#3877BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#3877BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3877BC

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3877BC	#FFFFFF	#000000	##FFFFFF
##3877BC	1.00	4.63	4.53	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#587BBF

Deuteranopia (green-blind)

#446FBB

Tritanopia (blue-blind)

#008790

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3877bc;
/* rgb */ color: rgb(56, 119, 188);
/* oklch */ color: oklch(56.1% 0.126 252.7);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#3877bc",
  "rgb": {
    "r": 56,
    "g": 119,
    "b": 188
  },
  "hsl": {
    "h": 211.364,
    "s": 54.098,
    "l": 47.843
  },
  "oklch": {
    "l": 0.56124,
    "c": 0.12551,
    "h": 252.7
  },
  "luminance": 0.17665
}

Semantic roles & 50–950 ramp

primary

#3877BC

secondary

#C9A987

accent

#974ADD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3877BC

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

Preview Lab → · Contrast checker → · Palette generator →