#3678BA#3678BA

#3678BA is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.2% C 0.123 H 250.9°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3678BA
RGB	rgb(54, 120, 186)
HSL	hsl(210, 55%, 47%)
HSV	hsv(210, 71%, 73%)
CMYK	cmyk(71%, 35.5%, 0%, 27.1%)
CIE-LAB	lab(49.20, 1.20, -40.81)
CIE-LCH	lch(49.20, 40.83, 271.68°)
OKLab	oklab(56.16% -0.0401 -0.116)
OKLCH	oklch(56.16% 0.123 250.9)
XYZ	xyz(17.0974, 17.7605, 48.9719)
Luminance	0.1776 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3678BA #BA7836

analogous

#36BABA #3678BA #3636BA

triadic

#3678BA #BA3678 #78BA36

tetradic

#3678BA #BA36BA #BA7836 #36BA36

square

#3678BA #BA36BA #BA7836 #36BA36

split-complementary

#3678BA #BA3636 #BABA36

monochromatic

#1A3B5B #28598B #3678BA #5D97D0 #8DB5DE

Accessibility & contrast

On white

4.61

#3678BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3678BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3678BA

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3678BA	#FFFFFF	#000000	##FFFFFF
##3678BA	1.00	4.61	4.55	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7CBD

Deuteranopia (green-blind)

#476FB9

Tritanopia (blue-blind)

#008890

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3678ba;
/* rgb */ color: rgb(54, 120, 186);
/* oklch */ color: oklch(56.2% 0.123 250.9);

Tailwind

colors: {
  custom: {
    50: '#7d9ecf',
    500: '#3678ba',
    950: '#000000',
  },
}

SCSS

$custom: #3678ba;
$custom-light: #7d9ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#3678ba",
  "rgb": {
    "r": 54,
    "g": 120,
    "b": 186
  },
  "hsl": {
    "h": 210,
    "s": 55,
    "l": 47.059
  },
  "oklch": {
    "l": 0.56164,
    "c": 0.12269,
    "h": 250.9
  },
  "luminance": 0.17762
}

Semantic roles & 50–950 ramp

primary

#3678BA

secondary

#C8A684

accent

#9449DE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3678BA

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

Preview Lab → · Contrast checker → · Palette generator →