#3667BC#3667BC

#3667BC is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.5% C 0.144 H 260.6°. Best body text is #FFFFFF at 5.49:1 contrast (WCAG AA passes).

Color values

HEX	#3667BC
RGB	rgb(54, 103, 188)
HSL	hsl(218, 55%, 47%)
HSV	hsv(218, 71%, 74%)
CMYK	cmyk(71.3%, 45.2%, 0%, 26.3%)
CIE-LAB	lab(44.40, 12.52, -49.63)
CIE-LCH	lch(44.40, 51.19, 284.16°)
OKLab	oklab(52.46% -0.0236 -0.1421)
OKLCH	oklch(52.46% 0.144 260.6)
XYZ	xyz(15.4454, 14.1140, 49.4775)
Luminance	0.1412 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3667BC #BC8B36

analogous

#36AABC #3667BC #4836BC

triadic

#3667BC #BC3667 #67BC36

tetradic

#3667BC #BC36AA #BC8B36 #36BC48

square

#3667BC #BC36AA #BC8B36 #36BC48

split-complementary

#3667BC #BC4836 #AABC36

monochromatic

#1B335D #284D8C #3667BC #5E88D1 #8EABDF

Accessibility & contrast

On white

5.49

#3667BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3667BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3667BC

5.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3667BC	#FFFFFF	#000000	##FFFFFF
##3667BC	1.00	5.49	3.82	5.49
#FFFFFF	5.49	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3C70BF

Deuteranopia (green-blind)

#2263BA

Tritanopia (blue-blind)

#007B88

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3667bc;
/* rgb */ color: rgb(54, 103, 188);
/* oklch */ color: oklch(52.5% 0.144 260.6);

Tailwind

colors: {
  custom: {
    50: '#7d91d1',
    500: '#3667bc',
    950: '#000000',
  },
}

SCSS

$custom: #3667bc;
$custom-light: #7d91d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3667bc",
  "rgb": {
    "r": 54,
    "g": 103,
    "b": 188
  },
  "hsl": {
    "h": 218.06,
    "s": 55.372,
    "l": 47.451
  },
  "oklch": {
    "l": 0.52463,
    "c": 0.14403,
    "h": 260.6
  },
  "luminance": 0.14116
}

Semantic roles & 50–950 ramp

primary

#3667BC

secondary

#C9B085

accent

#A849DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3667BC

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

Preview Lab → · Contrast checker → · Palette generator →