#3D66C1#3D66C1

#3D66C1 is a mid, vivid blue. Relative luminance 0.143; OKLCH L 52.9% C 0.150 H 263.8°. Best body text is #FFFFFF at 5.43:1 contrast (WCAG AA passes).

Color values

HEX	#3D66C1
RGB	rgb(61, 102, 193)
HSL	hsl(221, 52%, 50%)
HSV	hsv(221, 68%, 76%)
CMYK	cmyk(68.4%, 47.2%, 0%, 24.3%)
CIE-LAB	lab(44.72, 16.05, -51.99)
CIE-LCH	lch(44.72, 54.41, 287.16°)
OKLab	oklab(52.89% -0.0162 -0.1489)
OKLCH	oklch(52.89% 0.15 263.8)
XYZ	xyz(16.2981, 14.3435, 52.3514)
Luminance	0.1434 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D66C1 #C1983D

analogous

#3DA8C1 #3D66C1 #563DC1

triadic

#3D66C1 #C13D66 #66C13D

tetradic

#3D66C1 #C13DA8 #C1983D #3DC156

square

#3D66C1 #C13DA8 #C1983D #3DC156

split-complementary

#3D66C1 #C1563D #A8C13D

monochromatic

#203564 #2E4D92 #3D66C1 #6B8AD0 #99AFDF

Accessibility & contrast

On white

5.43

#3D66C1 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.87

#3D66C1 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3D66C1

5.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D66C1	#FFFFFF	#000000	##FFFFFF
##3D66C1	1.00	5.43	3.87	5.43
#FFFFFF	5.43	1.00	21.00	1.00
#000000	3.87	21.00	1.00	21.00
##FFFFFF	5.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3770C4

Deuteranopia (green-blind)

#1964BF

Tritanopia (blue-blind)

#007B8A

Achromatopsia (no color)

#6A6A6A

Design tokens & code

CSS

--color: #3d66c1;
/* rgb */ color: rgb(61, 102, 193);
/* oklch */ color: oklch(52.9% 0.150 263.8);

Tailwind

colors: {
  custom: {
    50: '#8191d4',
    500: '#3d66c1',
    950: '#000000',
  },
}

SCSS

$custom: #3d66c1;
$custom-light: #8191d4;
$custom-dark: #000000;

JSON

{
  "hex": "#3d66c1",
  "rgb": {
    "r": 61,
    "g": 102,
    "b": 193
  },
  "hsl": {
    "h": 221.364,
    "s": 51.969,
    "l": 49.804
  },
  "oklch": {
    "l": 0.52894,
    "c": 0.14981,
    "h": 263.8
  },
  "luminance": 0.14345
}

Semantic roles & 50–950 ramp

primary

#3D66C1

secondary

#CBB88F

accent

#AF4CDB

background

#F8F8FD

surface

#F0F0FA

border

#CBCBD3

text

#0C0C14

muted

#7D7D83

Preview Lab

Preview with #3D66C1

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

Preview Lab → · Contrast checker → · Palette generator →