#3667BB#3667BB

#3667BB is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.4% C 0.143 H 260.4°. Best body text is #FFFFFF at 5.51:1 contrast (WCAG AA passes).

Color values

HEX	#3667BB
RGB	rgb(54, 103, 187)
HSL	hsl(218, 55%, 47%)
HSV	hsv(218, 71%, 73%)
CMYK	cmyk(71.1%, 44.9%, 0%, 26.7%)
CIE-LAB	lab(44.33, 12.15, -49.15)
CIE-LCH	lch(44.33, 50.63, 283.89°)
OKLab	oklab(52.4% -0.0237 -0.1407)
OKLCH	oklch(52.4% 0.143 260.4)
XYZ	xyz(15.3380, 14.0710, 48.9117)
Luminance	0.1407 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3667BB #BB8A36

analogous

#36AABB #3667BB #4836BB

triadic

#3667BB #BB3667 #67BB36

tetradic

#3667BB #BB36AA #BB8A36 #36BB48

square

#3667BB #BB36AA #BB8A36 #36BB48

split-complementary

#3667BB #BB4836 #AABB36

monochromatic

#1B335C #284D8C #3667BB #5E88D0 #8DABDE

Accessibility & contrast

On white

5.51

#3667BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.81

#3667BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3667BB

5.51:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3667BB	#FFFFFF	#000000	##FFFFFF
##3667BB	1.00	5.51	3.81	5.51
#FFFFFF	5.51	1.00	21.00	1.00
#000000	3.81	21.00	1.00	21.00
##FFFFFF	5.51	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3D6FBE

Deuteranopia (green-blind)

#2363B9

Tritanopia (blue-blind)

#007B88

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3667bb;
/* rgb */ color: rgb(54, 103, 187);
/* oklch */ color: oklch(52.4% 0.143 260.4);

Tailwind

colors: {
  custom: {
    50: '#7d91d0',
    500: '#3667bb',
    950: '#000000',
  },
}

SCSS

$custom: #3667bb;
$custom-light: #7d91d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3667bb",
  "rgb": {
    "r": 54,
    "g": 103,
    "b": 187
  },
  "hsl": {
    "h": 217.895,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.52396,
    "c": 0.14266,
    "h": 260.4
  },
  "luminance": 0.14073
}

Semantic roles & 50–950 ramp

primary

#3667BB

secondary

#C9AF84

accent

#A849DF

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #3667BB

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

Preview Lab → · Contrast checker → · Palette generator →