#3661D0#3661D0

#3661D0 is a mid, vivid blue. Relative luminance 0.139; OKLCH L 52.6% C 0.178 H 264.9°. Best body text is #FFFFFF at 5.56:1 contrast (WCAG AA passes).

Color values

HEX	#3661D0
RGB	rgb(54, 97, 208)
HSL	hsl(223, 62%, 51%)
HSV	hsv(223, 74%, 82%)
CMYK	cmyk(74%, 53.4%, 0%, 18.4%)
CIE-LAB	lab(44.07, 23.77, -61.70)
CIE-LCH	lch(44.07, 66.12, 291.07°)
OKLab	oklab(52.64% -0.0159 -0.1777)
OKLCH	oklch(52.64% 0.178 264.9)
XYZ	xyz(17.1772, 13.8858, 61.4372)
Luminance	0.1389 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3661D0 #D0A536

analogous

#36AED0 #3661D0 #5836D0

triadic

#3661D0 #D03661 #61D036

tetradic

#3661D0 #D036AE #D0A536 #36D058

square

#3661D0 #D036AE #D0A536 #36D058

split-complementary

#3661D0 #D05836 #AED036

monochromatic

#1A3371 #2649A3 #3661D0 #6888DC #99AFE7

Accessibility & contrast

On white

5.56

#3661D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.78

#3661D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3661D0

5.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3661D0	#FFFFFF	#000000	##FFFFFF
##3661D0	1.00	5.56	3.78	5.56
#FFFFFF	5.56	1.00	21.00	1.00
#000000	3.78	21.00	1.00	21.00
##FFFFFF	5.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0770D4

Deuteranopia (green-blind)

#0061CE

Tritanopia (blue-blind)

#007C8F

Achromatopsia (no color)

#686868

Design tokens & code

CSS

--color: #3661d0;
/* rgb */ color: rgb(54, 97, 208);
/* oklch */ color: oklch(52.6% 0.178 264.9);

Tailwind

colors: {
  custom: {
    50: '#828ddf',
    500: '#3661d0',
    950: '#000000',
  },
}

SCSS

$custom: #3661d0;
$custom-light: #828ddf;
$custom-dark: #000000;

JSON

{
  "hex": "#3661d0",
  "rgb": {
    "r": 54,
    "g": 97,
    "b": 208
  },
  "hsl": {
    "h": 223.247,
    "s": 62.097,
    "l": 51.373
  },
  "oklch": {
    "l": 0.52636,
    "c": 0.17842,
    "h": 264.9
  },
  "luminance": 0.13888
}

Semantic roles & 50–950 ramp

primary

#3661D0

secondary

#D3C08F

accent

#B843E5

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3661D0

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

Preview Lab → · Contrast checker → · Palette generator →