#3678B7#3678B7

#3678B7 is a mid, moderate cyan. Relative luminance 0.176; OKLCH L 56.0% C 0.119 H 249.9°. Best body text is #FFFFFF at 4.64:1 contrast (WCAG AA passes).

Color values

HEX	#3678B7
RGB	rgb(54, 120, 183)
HSL	hsl(209, 54%, 46%)
HSV	hsv(209, 70%, 72%)
CMYK	cmyk(70.5%, 34.4%, 0%, 28.2%)
CIE-LAB	lab(49.05, 0.12, -39.33)
CIE-LCH	lch(49.05, 39.33, 270.17°)
OKLab	oklab(55.99% -0.0409 -0.1116)
OKLCH	oklch(55.99% 0.119 249.9)
XYZ	xyz(16.7818, 17.6343, 47.3099)
Luminance	0.1764 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3678B7 #B77536

analogous

#36B7B6 #3678B7 #3638B7

triadic

#3678B7 #B73678 #78B736

tetradic

#3678B7 #B636B7 #B77536 #38B736

square

#3678B7 #B636B7 #B77536 #38B736

split-complementary

#3678B7 #B73638 #B7B636

monochromatic

#1A3A58 #285988 #3678B7 #5B96CF #8BB5DD

Accessibility & contrast

On white

4.64

#3678B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.53

#3678B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3678B7

4.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3678B7	#FFFFFF	#000000	##FFFFFF
##3678B7	1.00	4.64	4.53	4.64
#FFFFFF	4.64	1.00	21.00	1.00
#000000	4.53	21.00	1.00	21.00
##FFFFFF	4.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C7BBA

Deuteranopia (green-blind)

#496FB6

Tritanopia (blue-blind)

#00878F

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3678b7;
/* rgb */ color: rgb(54, 120, 183);
/* oklch */ color: oklch(56.0% 0.119 249.9);

Tailwind

colors: {
  custom: {
    50: '#7c9ecd',
    500: '#3678b7',
    950: '#000000',
  },
}

SCSS

$custom: #3678b7;
$custom-light: #7c9ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#3678b7",
  "rgb": {
    "r": 54,
    "g": 120,
    "b": 183
  },
  "hsl": {
    "h": 209.302,
    "s": 54.43,
    "l": 46.471
  },
  "oklch": {
    "l": 0.55992,
    "c": 0.11887,
    "h": 249.9
  },
  "luminance": 0.17636
}

Semantic roles & 50–950 ramp

primary

#3678B7

secondary

#C7A482

accent

#924ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3678B7

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

Preview Lab → · Contrast checker → · Palette generator →