#3678BB#3678BB

#3678BB is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.2% C 0.124 H 251.3°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#3678BB
RGB	rgb(54, 120, 187)
HSL	hsl(210, 55%, 47%)
HSV	hsv(210, 71%, 73%)
CMYK	cmyk(71.1%, 35.8%, 0%, 26.7%)
CIE-LAB	lab(49.26, 1.56, -41.31)
CIE-LCH	lch(49.26, 41.34, 272.16°)
OKLab	oklab(56.22% -0.0398 -0.1174)
OKLCH	oklch(56.22% 0.124 251.3)
XYZ	xyz(17.2041, 17.8032, 49.5337)
Luminance	0.1781 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3678BB #BB7936

analogous

#36BABB #3678BB #3736BB

triadic

#3678BB #BB3678 #78BB36

tetradic

#3678BB #BB36BA #BB7936 #36BB37

square

#3678BB #BB36BA #BB7936 #36BB37

split-complementary

#3678BB #BB3736 #BABB36

monochromatic

#1B3B5C #285A8C #3678BB #5E97D0 #8DB5DE

Accessibility & contrast

On white

4.60

#3678BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#3678BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3678BB

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3678BB	#FFFFFF	#000000	##FFFFFF
##3678BB	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7CBE

Deuteranopia (green-blind)

#466FBA

Tritanopia (blue-blind)

#008891

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3678bb;
/* rgb */ color: rgb(54, 120, 187);
/* oklch */ color: oklch(56.2% 0.124 251.3);

Tailwind

colors: {
  custom: {
    50: '#7d9ed0',
    500: '#3678bb',
    950: '#000000',
  },
}

SCSS

$custom: #3678bb;
$custom-light: #7d9ed0;
$custom-dark: #000000;

JSON

{
  "hex": "#3678bb",
  "rgb": {
    "r": 54,
    "g": 120,
    "b": 187
  },
  "hsl": {
    "h": 210.226,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.56222,
    "c": 0.12396,
    "h": 251.3
  },
  "luminance": 0.17805
}

Semantic roles & 50–950 ramp

primary

#3678BB

secondary

#C9A784

accent

#9449DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3678BB

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

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