#3878BC#3878BC

#3878BC is a mid, vivid cyan. Relative luminance 0.179; OKLCH L 56.4% C 0.124 H 252.1°. Best body text is #000000 at 4.58:1 contrast (WCAG AA passes).

Color values

HEX	#3878BC
RGB	rgb(56, 120, 188)
HSL	hsl(211, 54%, 48%)
HSV	hsv(211, 70%, 74%)
CMYK	cmyk(70.2%, 36.2%, 0%, 26.3%)
CIE-LAB	lab(49.38, 2.22, -41.69)
CIE-LCH	lch(49.38, 41.75, 273.05°)
OKLab	oklab(56.35% -0.0382 -0.1185)
OKLCH	oklch(56.35% 0.125 252.1)
XYZ	xyz(17.4211, 17.9027, 50.1046)
Luminance	0.1790 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878BC #BC7C38

analogous

#38BABC #3878BC #3A38BC

triadic

#3878BC #BC3878 #78BC38

tetradic

#3878BC #BC38BA #BC7C38 #38BC3A

square

#3878BC #BC38BA #BC7C38 #38BC3A

split-complementary

#3878BC #BC3A38 #BABC38

monochromatic

#1C3C5E #2A5A8D #3878BC #6197D0 #90B6DE

Accessibility & contrast

On white

4.58

#3878BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.58

#3878BC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3878BC

4.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878BC	#FFFFFF	#000000	##000000
##3878BC	1.00	4.58	4.58	4.58
#FFFFFF	4.58	1.00	21.00	21.00
#000000	4.58	21.00	1.00	1.00
##000000	4.58	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#597CBF

Deuteranopia (green-blind)

#4670BB

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3878bc;
/* rgb */ color: rgb(56, 120, 188);
/* oklch */ color: oklch(56.4% 0.124 252.1);

Tailwind

colors: {
  custom: {
    50: '#7e9ed0',
    500: '#3878bc',
    950: '#000000',
  },
}

SCSS

$custom: #3878bc;
$custom-light: #7e9ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#3878bc",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 188
  },
  "hsl": {
    "h": 210.909,
    "s": 54.098,
    "l": 47.843
  },
  "oklch": {
    "l": 0.56353,
    "c": 0.1245,
    "h": 252.1
  },
  "luminance": 0.17905
}

Semantic roles & 50–950 ramp

primary

#3878BC

secondary

#C9A987

accent

#964ADD

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3878BC

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

Preview Lab → · Contrast checker → · Palette generator →