#3661C0#3661C0

#3661C0 is a mid, vivid blue. Relative luminance 0.131; OKLCH L 51.5% C 0.157 H 263.5°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#3661C0
RGB	rgb(54, 97, 192)
HSL	hsl(221, 56%, 48%)
HSV	hsv(221, 72%, 75%)
CMYK	cmyk(71.9%, 49.5%, 0%, 24.7%)
CIE-LAB	lab(42.97, 17.85, -54.24)
CIE-LCH	lch(42.97, 57.11, 288.22°)
OKLab	oklab(51.45% -0.0176 -0.1558)
OKLCH	oklch(51.45% 0.157 263.5)
XYZ	xyz(15.3071, 13.1378, 51.5881)
Luminance	0.1314 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3661C0 #C09536

analogous

#36A6C0 #3661C0 #5036C0

triadic

#3661C0 #C03661 #61C036

tetradic

#3661C0 #C036A6 #C09536 #36C050

square

#3661C0 #C036A6 #C09536 #36C050

split-complementary

#3661C0 #C05036 #A6C036

monochromatic

#1B3160 #294990 #3661C0 #6184D2 #90A9E0

Accessibility & contrast

On white

5.79

#3661C0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#3661C0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3661C0

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3661C0	#FFFFFF	#000000	##FFFFFF
##3661C0	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A6CC3

Deuteranopia (green-blind)

#0060BE

Tritanopia (blue-blind)

#007887

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3661c0;
/* rgb */ color: rgb(54, 97, 192);
/* oklch */ color: oklch(51.5% 0.157 263.5);

Tailwind

colors: {
  custom: {
    50: '#7e8dd4',
    500: '#3661c0',
    950: '#000000',
  },
}

SCSS

$custom: #3661c0;
$custom-light: #7e8dd4;
$custom-dark: #000000;

JSON

{
  "hex": "#3661c0",
  "rgb": {
    "r": 54,
    "g": 97,
    "b": 192
  },
  "hsl": {
    "h": 221.304,
    "s": 56.098,
    "l": 48.235
  },
  "oklch": {
    "l": 0.51451,
    "c": 0.15676,
    "h": 263.5
  },
  "luminance": 0.13139
}

Semantic roles & 50–950 ramp

primary

#3661C0

secondary

#CBB687

accent

#B048DF

background

#F8F8FD

surface

#EFF0FA

border

#CACBD3

text

#0B0C14

muted

#7C7D83

Preview Lab

Preview with #3661C0

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

Preview Lab → · Contrast checker → · Palette generator →