#3B78CC#3B78CC

#3B78CC is a mid, vivid cyan. Relative luminance 0.187; OKLCH L 57.4% C 0.144 H 257.1°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3B78CC
RGB	rgb(59, 120, 204)
HSL	hsl(215, 59%, 52%)
HSV	hsv(215, 71%, 80%)
CMYK	cmyk(71.1%, 41.2%, 0%, 20%)
CIE-LAB	lab(50.36, 8.44, -49.29)
CIE-LCH	lch(50.36, 50.01, 279.72°)
OKLab	oklab(57.43% -0.0323 -0.1407)
OKLCH	oklch(57.43% 0.144 257.1)
XYZ	xyz(19.4152, 18.7203, 59.7052)
Luminance	0.1872 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B78CC #CC8F3B

analogous

#3BC0CC #3B78CC #473BCC

triadic

#3B78CC #CC3B78 #78CC3B

tetradic

#3B78CC #CC3BC0 #CC8F3B #3BCC47

square

#3B78CC #CC3BC0 #CC8F3B #3BCC47

split-complementary

#3B78CC #CC473B #C0CC3B

monochromatic

#1D4070 #2A5CA0 #3B78CC #6C99D9 #9CBBE5

Accessibility & contrast

On white

4.43

#3B78CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#3B78CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3B78CC

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B78CC	#FFFFFF	#000000	##000000
##3B78CC	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)

#507FCF

Deuteranopia (green-blind)

#3872CA

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3b78cc;
/* rgb */ color: rgb(59, 120, 204);
/* oklch */ color: oklch(57.4% 0.144 257.1);

Tailwind

colors: {
  custom: {
    50: '#829edc',
    500: '#3b78cc',
    950: '#000000',
  },
}

SCSS

$custom: #3b78cc;
$custom-light: #829edc;
$custom-dark: #000000;

JSON

{
  "hex": "#3b78cc",
  "rgb": {
    "r": 59,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 214.759,
    "s": 58.704,
    "l": 51.569
  },
  "oklch": {
    "l": 0.57431,
    "c": 0.1444,
    "h": 257.1
  },
  "luminance": 0.18722
}

Semantic roles & 50–950 ramp

primary

#3B78CC

secondary

#D1B692

accent

#A046E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3B78CC

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

Preview Lab → · Contrast checker → · Palette generator →