#3878C9#3878C9

#3878C9 is a mid, vivid cyan. Relative luminance 0.185; OKLCH L 57.1% C 0.141 H 255.7°. Best body text is #000000 at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3878C9
RGB	rgb(56, 120, 201)
HSL	hsl(214, 57%, 50%)
HSV	hsv(214, 72%, 79%)
CMYK	cmyk(72.1%, 40.3%, 0%, 21.2%)
CIE-LAB	lab(50.08, 6.93, -48.02)
CIE-LCH	lch(50.08, 48.52, 278.21°)
OKLab	oklab(57.13% -0.035 -0.137)
OKLCH	oklch(57.13% 0.141 255.7)
XYZ	xyz(18.8861, 18.4887, 57.8203)
Luminance	0.1849 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3878C9 #C98938

analogous

#38C1C9 #3878C9 #4038C9

triadic

#3878C9 #C93878 #78C938

tetradic

#3878C9 #C938C1 #C98938 #38C940

square

#3878C9 #C938C1 #C98938 #38C940

split-complementary

#3878C9 #C94038 #C1C938

monochromatic

#1D3F6A #2A5B9A #3878C9 #6899D6 #98B9E3

Accessibility & contrast

On white

4.47

#3878C9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.70

#3878C9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3878C9

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3878C9	#FFFFFF	#000000	##000000
##3878C9	1.00	4.47	4.70	4.70
#FFFFFF	4.47	1.00	21.00	21.00
#000000	4.70	21.00	1.00	1.00
##000000	4.70	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#527ECC

Deuteranopia (green-blind)

#3B71C7

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3878c9;
/* rgb */ color: rgb(56, 120, 201);
/* oklch */ color: oklch(57.1% 0.141 255.7);

Tailwind

colors: {
  custom: {
    50: '#809eda',
    500: '#3878c9',
    950: '#000000',
  },
}

SCSS

$custom: #3878c9;
$custom-light: #809eda;
$custom-dark: #000000;

JSON

{
  "hex": "#3878c9",
  "rgb": {
    "r": 56,
    "g": 120,
    "b": 201
  },
  "hsl": {
    "h": 213.517,
    "s": 57.312,
    "l": 50.392
  },
  "oklch": {
    "l": 0.57133,
    "c": 0.14146,
    "h": 255.7
  },
  "luminance": 0.18491
}

Semantic roles & 50–950 ramp

primary

#3878C9

secondary

#CFB28E

accent

#9D47E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3878C9

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

Preview Lab → · Contrast checker → · Palette generator →