#3C78CB#3C78CB

#3C78CB is a mid, vivid cyan. Relative luminance 0.187; OKLCH L 57.4% C 0.143 H 257.1°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3C78CB
RGB	rgb(60, 120, 203)
HSL	hsl(215, 58%, 52%)
HSV	hsv(215, 70%, 80%)
CMYK	cmyk(70.4%, 40.9%, 0%, 20.4%)
CIE-LAB	lab(50.34, 8.22, -48.75)
CIE-LCH	lch(50.34, 49.44, 279.58°)
OKLab	oklab(57.41% -0.0319 -0.1391)
OKLCH	oklch(57.41% 0.143 257.1)
XYZ	xyz(19.3555, 18.7033, 59.0784)
Luminance	0.1870 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C78CB #CB8F3C

analogous

#3CC0CB #3C78CB #483CCB

triadic

#3C78CB #CB3C78 #78CB3C

tetradic

#3C78CB #CB3CC0 #CB8F3C #3CCB48

square

#3C78CB #CB3CC0 #CB8F3C #3CCB48

split-complementary

#3C78CB #CB483C #C0CB3C

monochromatic

#1E406F #2A5C9F #3C78CB #6C99D8 #9DBBE5

Accessibility & contrast

On white

4.43

#3C78CB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#3C78CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3C78CB

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C78CB	#FFFFFF	#000000	##000000
##3C78CB	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#517FCE

Deuteranopia (green-blind)

#3A72C9

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3c78cb;
/* rgb */ color: rgb(60, 120, 203);
/* oklch */ color: oklch(57.4% 0.143 257.1);

Tailwind

colors: {
  custom: {
    50: '#829edb',
    500: '#3c78cb',
    950: '#000000',
  },
}

SCSS

$custom: #3c78cb;
$custom-light: #829edb;
$custom-dark: #000000;

JSON

{
  "hex": "#3c78cb",
  "rgb": {
    "r": 60,
    "g": 120,
    "b": 203
  },
  "hsl": {
    "h": 214.825,
    "s": 57.895,
    "l": 51.569
  },
  "oklch": {
    "l": 0.57408,
    "c": 0.14273,
    "h": 257.1
  },
  "luminance": 0.18705
}

Semantic roles & 50–950 ramp

primary

#3C78CB

secondary

#D1B692

accent

#A047E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3C78CB

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

Preview Lab → · Contrast checker → · Palette generator →