#3661BE#3661BE

#3661BE is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.3% C 0.154 H 263.3°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#3661BE
RGB	rgb(54, 97, 190)
HSL	hsl(221, 56%, 48%)
HSV	hsv(221, 72%, 75%)
CMYK	cmyk(71.6%, 48.9%, 0%, 25.5%)
CIE-LAB	lab(42.84, 17.11, -53.30)
CIE-LCH	lch(42.84, 55.97, 287.80°)
OKLab	oklab(51.31% -0.0179 -0.153)
OKLCH	oklch(51.31% 0.154 263.3)
XYZ	xyz(15.0870, 13.0498, 50.4290)
Luminance	0.1305 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3661BE #BE9336

analogous

#36A5BE #3661BE #4F36BE

triadic

#3661BE #BE3661 #61BE36

tetradic

#3661BE #BE36A5 #BE9336 #36BE4F

square

#3661BE #BE36A5 #BE9336 #36BE4F

split-complementary

#3661BE #BE4F36 #A5BE36

monochromatic

#1B305F #28498E #3661BE #6084D2 #8FA8DF

Accessibility & contrast

On white

5.82

#3661BE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#3661BE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3661BE

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3661BE	#FFFFFF	#000000	##FFFFFF
##3661BE	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D6CC1

Deuteranopia (green-blind)

#005FBC

Tritanopia (blue-blind)

#007786

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3661be;
/* rgb */ color: rgb(54, 97, 190);
/* oklch */ color: oklch(51.3% 0.154 263.3);

Tailwind

colors: {
  custom: {
    50: '#7e8dd2',
    500: '#3661be',
    950: '#000000',
  },
}

SCSS

$custom: #3661be;
$custom-light: #7e8dd2;
$custom-dark: #000000;

JSON

{
  "hex": "#3661be",
  "rgb": {
    "r": 54,
    "g": 97,
    "b": 190
  },
  "hsl": {
    "h": 221.029,
    "s": 55.738,
    "l": 47.843
  },
  "oklch": {
    "l": 0.51308,
    "c": 0.15401,
    "h": 263.3
  },
  "luminance": 0.13051
}

Semantic roles & 50–950 ramp

primary

#3661BE

secondary

#CAB486

accent

#B049DF

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3661BE

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

Preview Lab → · Contrast checker → · Palette generator →