#3661C7#3661C7

#3661C7 is a mid, vivid blue. Relative luminance 0.135; OKLCH L 52.0% C 0.166 H 264.2°. Best body text is #FFFFFF at 5.69:1 contrast (WCAG AA passes).

Color values

HEX	#3661C7
RGB	rgb(54, 97, 199)
HSL	hsl(222, 57%, 50%)
HSV	hsv(222, 73%, 78%)
CMYK	cmyk(72.9%, 51.3%, 0%, 22%)
CIE-LAB	lab(43.44, 20.44, -57.54)
CIE-LCH	lch(43.44, 61.06, 289.56°)
OKLab	oklab(51.96% -0.0168 -0.1655)
OKLCH	oklch(51.96% 0.166 264.2)
XYZ	xyz(16.1012, 13.4554, 55.7704)
Luminance	0.1346 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3661C7 #C79C36

analogous

#36AAC7 #3661C7 #5436C7

triadic

#3661C7 #C73661 #61C736

tetradic

#3661C7 #C736AA #C79C36 #36C754

square

#3661C7 #C736AA #C79C36 #36C754

split-complementary

#3661C7 #C75436 #AAC736

monochromatic

#1C3267 #294A97 #3661C7 #6586D5 #95ACE2

Accessibility & contrast

On white

5.69

#3661C7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.69

#3661C7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3661C7

5.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3661C7	#FFFFFF	#000000	##FFFFFF
##3661C7	1.00	5.69	3.69	5.69
#FFFFFF	5.69	1.00	21.00	1.00
#000000	3.69	21.00	1.00	21.00
##FFFFFF	5.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#206ECB

Deuteranopia (green-blind)

#0060C5

Tritanopia (blue-blind)

#00798B

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #3661c7;
/* rgb */ color: rgb(54, 97, 199);
/* oklch */ color: oklch(52.0% 0.166 264.2);

Tailwind

colors: {
  custom: {
    50: '#808dd9',
    500: '#3661c7',
    950: '#000000',
  },
}

SCSS

$custom: #3661c7;
$custom-light: #808dd9;
$custom-dark: #000000;

JSON

{
  "hex": "#3661c7",
  "rgb": {
    "r": 54,
    "g": 97,
    "b": 199
  },
  "hsl": {
    "h": 222.207,
    "s": 57.312,
    "l": 49.608
  },
  "oklch": {
    "l": 0.51961,
    "c": 0.1663,
    "h": 264.2
  },
  "luminance": 0.13457
}

Semantic roles & 50–950 ramp

primary

#3661C7

secondary

#CEBA8B

accent

#B347E1

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3661C7

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

Preview Lab → · Contrast checker → · Palette generator →