#3878BD#3878BD

#3878BD is a mid, vivid cyan. Relative luminance 0.179; OKLCH L 56.4% C 0.126 H 252.4°. Best body text is #000000 at 4.59:1 contrast (WCAG AA passes).

Color values

HEX	#3878BD
RGB	rgb(56, 120, 189)
HSL	hsl(211, 54%, 48%)
HSV	hsv(211, 70%, 74%)
CMYK	cmyk(70.4%, 36.5%, 0%, 25.9%)
CIE-LAB	lab(49.43, 2.58, -42.18)
CIE-LCH	lch(49.43, 42.26, 273.50°)
OKLab	oklab(56.41% -0.0379 -0.1199)
OKLCH	oklch(56.41% 0.126 252.4)
XYZ	xyz(17.5293, 17.9459, 50.6743)
Luminance	0.1795 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878BD #BD7D38

analogous

#38BABD #3878BD #3A38BD

triadic

#3878BD #BD3878 #78BD38

tetradic

#3878BD #BD38BA #BD7D38 #38BD3A

square

#3878BD #BD38BA #BD7D38 #38BD3A

split-complementary

#3878BD #BD3A38 #BABD38

monochromatic

#1C3C5F #2A5A8E #3878BD #6297D0 #91B6DE

Accessibility & contrast

On white

4.58

#3878BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.59

#3878BD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3878BD

4.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878BD	#FFFFFF	#000000	##000000
##3878BD	1.00	4.58	4.59	4.59
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.59	21.00	1.00	1.00
##000000	4.59	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#597CC0

Deuteranopia (green-blind)

#4570BC

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3878bd;
/* rgb */ color: rgb(56, 120, 189);
/* oklch */ color: oklch(56.4% 0.126 252.4);

Tailwind

colors: {
  custom: {
    50: '#7e9ed1',
    500: '#3878bd',
    950: '#000000',
  },
}

SCSS

$custom: #3878bd;
$custom-light: #7e9ed1;
$custom-dark: #000000;

JSON

{
  "hex": "#3878bd",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 189
  },
  "hsl": {
    "h": 211.128,
    "s": 54.286,
    "l": 48.039
  },
  "oklch": {
    "l": 0.56411,
    "c": 0.12579,
    "h": 252.4
  },
  "luminance": 0.17948
}

Semantic roles & 50–950 ramp

primary

#3878BD

secondary

#C9AA87

accent

#974ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3878BD

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

Preview Lab → · Contrast checker → · Palette generator →