#3678B2#3678B2

#3678B2 is a mid, moderate cyan. Relative luminance 0.174; OKLCH L 55.7% C 0.113 H 247.9°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#3678B2
RGB	rgb(54, 120, 178)
HSL	hsl(208, 53%, 45%)
HSV	hsv(208, 70%, 70%)
CMYK	cmyk(69.7%, 32.6%, 0%, 30.2%)
CIE-LAB	lab(48.80, -1.67, -36.83)
CIE-LCH	lch(48.80, 36.87, 267.40°)
OKLab	oklab(55.71% -0.0423 -0.1043)
OKLCH	oklch(55.71% 0.113 247.9)
XYZ	xyz(16.2706, 17.4298, 44.6176)
Luminance	0.1743 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3678B2 #B27036

analogous

#36B2AE #3678B2 #363AB2

triadic

#3678B2 #B23678 #78B236

tetradic

#3678B2 #AE36B2 #B27036 #3AB236

square

#3678B2 #AE36B2 #B27036 #3AB236

split-complementary

#3678B2 #B2363A #B2AE36

monochromatic

#1A3954 #285883 #3678B2 #5996CD #88B4DB

Accessibility & contrast

On white

4.68

#3678B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#3678B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3678B2

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3678B2	#FFFFFF	#000000	##FFFFFF
##3678B2	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7AB4

Deuteranopia (green-blind)

#4D6FB1

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3678b2;
/* rgb */ color: rgb(54, 120, 178);
/* oklch */ color: oklch(55.7% 0.113 247.9);

Tailwind

colors: {
  custom: {
    50: '#7b9ec9',
    500: '#3678b2',
    950: '#000000',
  },
}

SCSS

$custom: #3678b2;
$custom-light: #7b9ec9;
$custom-dark: #000000;

JSON

{
  "hex": "#3678b2",
  "rgb": {
    "r": 54,
    "g": 120,
    "b": 178
  },
  "hsl": {
    "h": 208.065,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.55711,
    "c": 0.1126,
    "h": 247.9
  },
  "luminance": 0.17432
}

Semantic roles & 50–950 ramp

primary

#3678B2

secondary

#C5A07F

accent

#8F4BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #3678B2

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

Preview Lab → · Contrast checker → · Palette generator →