#3661D4#3661D4

#3661D4 is a mid, vivid blue. Relative luminance 0.141; OKLCH L 52.9% C 0.184 H 265.1°. Best body text is #FFFFFF at 5.50:1 contrast (WCAG AA passes).

Color values

HEX	#3661D4
RGB	rgb(54, 97, 212)
HSL	hsl(224, 65%, 52%)
HSV	hsv(224, 75%, 83%)
CMYK	cmyk(74.5%, 54.2%, 0%, 16.9%)
CIE-LAB	lab(44.35, 25.25, -63.53)
CIE-LCH	lch(44.35, 68.36, 291.67°)
OKLab	oklab(52.94% -0.0156 -0.1831)
OKLCH	oklch(52.94% 0.184 265.1)
XYZ	xyz(17.6755, 14.0852, 64.0618)
Luminance	0.1409 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3661D4 #D4A936

analogous

#36B0D4 #3661D4 #5A36D4

triadic

#3661D4 #D43661 #61D436

tetradic

#3661D4 #D436B0 #D4A936 #36D45A

square

#3661D4 #D436B0 #D4A936 #36D45A

split-complementary

#3661D4 #D45A36 #B0D436

monochromatic

#193376 #2448A9 #3661D4 #6889DF #9BB0EA

Accessibility & contrast

On white

5.50

#3661D4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.82

#3661D4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3661D4

5.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3661D4	#FFFFFF	#000000	##FFFFFF
##3661D4	1.00	5.50	3.82	5.50
#FFFFFF	5.50	1.00	21.00	1.00
#000000	3.82	21.00	1.00	21.00
##FFFFFF	5.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0070D8

Deuteranopia (green-blind)

#0062D2

Tritanopia (blue-blind)

#007D91

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #3661d4;
/* rgb */ color: rgb(54, 97, 212);
/* oklch */ color: oklch(52.9% 0.184 265.1);

Tailwind

colors: {
  custom: {
    50: '#838de2',
    500: '#3661d4',
    950: '#000000',
  },
}

SCSS

$custom: #3661d4;
$custom-light: #838de2;
$custom-dark: #000000;

JSON

{
  "hex": "#3661d4",
  "rgb": {
    "r": 54,
    "g": 97,
    "b": 212
  },
  "hsl": {
    "h": 223.671,
    "s": 64.754,
    "l": 52.157
  },
  "oklch": {
    "l": 0.52943,
    "c": 0.18374,
    "h": 265.1
  },
  "luminance": 0.14087
}

Semantic roles & 50–950 ramp

primary

#3661D4

secondary

#D5C390

accent

#BA40E8

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3661D4

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

Preview Lab → · Contrast checker → · Palette generator →