#3661D2#3661D2

#3661D2 is a mid, vivid blue. Relative luminance 0.140; OKLCH L 52.8% C 0.181 H 265.0°. Best body text is #FFFFFF at 5.53:1 contrast (WCAG AA passes).

Color values

HEX	#3661D2
RGB	rgb(54, 97, 210)
HSL	hsl(223, 63%, 52%)
HSV	hsv(223, 74%, 82%)
CMYK	cmyk(74.3%, 53.8%, 0%, 17.6%)
CIE-LAB	lab(44.21, 24.51, -62.62)
CIE-LCH	lch(44.21, 67.24, 291.38°)
OKLab	oklab(52.79% -0.0158 -0.1804)
OKLCH	oklch(52.79% 0.181 265)
XYZ	xyz(17.4248, 13.9849, 62.7413)
Luminance	0.1399 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3661D2 #D2A736

analogous

#36AFD2 #3661D2 #5936D2

triadic

#3661D2 #D23661 #61D236

tetradic

#3661D2 #D236AF #D2A736 #36D259

square

#3661D2 #D236AF #D2A736 #36D259

split-complementary

#3661D2 #D25936 #AFD236

monochromatic

#1A3374 #2549A6 #3661D2 #6888DD #9AB0E8

Accessibility & contrast

On white

5.53

#3661D2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#3661D2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3661D2

5.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3661D2	#FFFFFF	#000000	##FFFFFF
##3661D2	1.00	5.53	3.80	5.53
#FFFFFF	5.53	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D6

Deuteranopia (green-blind)

#0062D0

Tritanopia (blue-blind)

#007D90

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3661d2;
/* rgb */ color: rgb(54, 97, 210);
/* oklch */ color: oklch(52.8% 0.181 265.0);

Tailwind

colors: {
  custom: {
    50: '#828de1',
    500: '#3661d2',
    950: '#000000',
  },
}

SCSS

$custom: #3661d2;
$custom-light: #828de1;
$custom-dark: #000000;

JSON

{
  "hex": "#3661d2",
  "rgb": {
    "r": 54,
    "g": 97,
    "b": 210
  },
  "hsl": {
    "h": 223.462,
    "s": 63.415,
    "l": 51.765
  },
  "oklch": {
    "l": 0.52789,
    "c": 0.18109,
    "h": 265
  },
  "luminance": 0.13987
}

Semantic roles & 50–950 ramp

primary

#3661D2

secondary

#D4C190

accent

#B941E6

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3661D2

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

Preview Lab → · Contrast checker → · Palette generator →