#3678D3#3678D3

#3678D3 is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.7% C 0.155 H 257.2°. Best body text is #000000 at 4.78:1 contrast (WCAG AA passes).

Color values

HEX	#3678D3
RGB	rgb(54, 120, 211)
HSL	hsl(215, 64%, 52%)
HSV	hsv(215, 74%, 83%)
CMYK	cmyk(74.4%, 43.1%, 0%, 17.3%)
CIE-LAB	lab(50.59, 10.32, -52.91)
CIE-LCH	lch(50.59, 53.90, 281.04°)
OKLab	oklab(57.69% -0.0343 -0.1514)
OKLCH	oklch(57.69% 0.155 257.2)
XYZ	xyz(19.9914, 18.9181, 64.2133)
Luminance	0.1892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3678D3 #D39136

analogous

#36C7D3 #3678D3 #4336D3

triadic

#3678D3 #D33678 #78D336

tetradic

#3678D3 #D336C7 #D39136 #36D343

square

#3678D3 #D336C7 #D39136 #36D343

split-complementary

#3678D3 #D34336 #C7D336

monochromatic

#1A4075 #255CA7 #3678D3 #689ADE #9ABBE9

Accessibility & contrast

On white

4.39

#3678D3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.78

#3678D3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3678D3

4.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3678D3	#FFFFFF	#000000	##000000
##3678D3	1.00	4.39	4.78	4.78
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.78	21.00	1.00	1.00
##000000	4.78	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B80D7

Deuteranopia (green-blind)

#2D72D1

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3678d3;
/* rgb */ color: rgb(54, 120, 211);
/* oklch */ color: oklch(57.7% 0.155 257.2);

Tailwind

colors: {
  custom: {
    50: '#829ee1',
    500: '#3678d3',
    950: '#000000',
  },
}

SCSS

$custom: #3678d3;
$custom-light: #829ee1;
$custom-dark: #000000;

JSON

{
  "hex": "#3678d3",
  "rgb": {
    "r": 54,
    "g": 120,
    "b": 211
  },
  "hsl": {
    "h": 214.777,
    "s": 64.082,
    "l": 51.961
  },
  "oklch": {
    "l": 0.57695,
    "c": 0.15526,
    "h": 257.2
  },
  "luminance": 0.1892
}

Semantic roles & 50–950 ramp

primary

#3678D3

secondary

#D5B890

accent

#A141E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3678D3

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

Preview Lab → · Contrast checker → · Palette generator →