#3678CC#3678CC

#3678CC is a mid, vivid cyan. Relative luminance 0.186; OKLCH L 57.2% C 0.146 H 255.8°. Best body text is #000000 at 4.72:1 contrast (WCAG AA passes).

Color values

HEX	#3678CC
RGB	rgb(54, 120, 204)
HSL	hsl(214, 60%, 51%)
HSV	hsv(214, 74%, 80%)
CMYK	cmyk(73.5%, 41.2%, 0%, 20%)
CIE-LAB	lab(50.19, 7.75, -49.57)
CIE-LCH	lch(50.19, 50.18, 278.88°)
OKLab	oklab(57.25% -0.0357 -0.1416)
OKLCH	oklch(57.25% 0.146 255.8)
XYZ	xyz(19.1329, 18.5747, 59.6920)
Luminance	0.1858 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3678CC #CC8A36

analogous

#36C3CC #3678CC #3F36CC

triadic

#3678CC #CC3678 #78CC36

tetradic

#3678CC #CC36C3 #CC8A36 #36CC3F

square

#3678CC #CC36C3 #CC8A36 #36CC3F

split-complementary

#3678CC #CC3F36 #C3CC36

monochromatic

#1B3F6C #285B9D #3678CC #6799D8 #98BAE5

Accessibility & contrast

On white

4.45

#3678CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.72

#3678CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3678CC

4.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3678CC	#FFFFFF	#000000	##000000
##3678CC	1.00	4.45	4.72	4.72
#FFFFFF	4.45	1.00	21.00	21.00
#000000	4.72	21.00	1.00	1.00
##000000	4.72	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#507FCF

Deuteranopia (green-blind)

#3771CA

Tritanopia (blue-blind)

#008C98

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3678cc;
/* rgb */ color: rgb(54, 120, 204);
/* oklch */ color: oklch(57.2% 0.146 255.8);

Tailwind

colors: {
  custom: {
    50: '#809edc',
    500: '#3678cc',
    950: '#000000',
  },
}

SCSS

$custom: #3678cc;
$custom-light: #809edc;
$custom-dark: #000000;

JSON

{
  "hex": "#3678cc",
  "rgb": {
    "r": 54,
    "g": 120,
    "b": 204
  },
  "hsl": {
    "h": 213.6,
    "s": 59.524,
    "l": 50.588
  },
  "oklch": {
    "l": 0.57249,
    "c": 0.14607,
    "h": 255.8
  },
  "luminance": 0.18577
}

Semantic roles & 50–950 ramp

primary

#3678CC

secondary

#D0B38E

accent

#9D45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3678CC

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

Preview Lab → · Contrast checker → · Palette generator →