#3D66CC#3D66CC

#3D66CC is a mid, vivid blue. Relative luminance 0.149; OKLCH L 53.7% C 0.165 H 264.9°. Best body text is #FFFFFF at 5.29:1 contrast (WCAG AA passes).

Color values

HEX	#3D66CC
RGB	rgb(61, 102, 204)
HSL	hsl(223, 58%, 52%)
HSV	hsv(223, 70%, 80%)
CMYK	cmyk(70.1%, 50%, 0%, 20%)
CIE-LAB	lab(45.43, 20.04, -57.19)
CIE-LCH	lch(45.43, 60.60, 289.31°)
OKLab	oklab(53.66% -0.0147 -0.1642)
OKLCH	oklch(53.66% 0.165 264.9)
XYZ	xyz(17.5711, 14.8527, 59.0559)
Luminance	0.1485 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D66CC #CCA33D

analogous

#3DAECC #3D66CC #5C3DCC

triadic

#3D66CC #CC3D66 #66CC3D

tetradic

#3D66CC #CC3DAE #CCA33D #3DCC5C

square

#3D66CC #CC3DAE #CCA33D #3DCC5C

split-complementary

#3D66CC #CC5C3D #AECC3D

monochromatic

#1E3671 #2A4DA1 #3D66CC #6D8CD9 #9EB2E5

Accessibility & contrast

On white

5.29

#3D66CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.97

#3D66CC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3D66CC

5.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D66CC	#FFFFFF	#000000	##FFFFFF
##3D66CC	1.00	5.29	3.97	5.29
#FFFFFF	5.29	1.00	21.00	1.00
#000000	3.97	21.00	1.00	21.00
##FFFFFF	5.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A72D0

Deuteranopia (green-blind)

#0065CA

Tritanopia (blue-blind)

#007E8F

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #3d66cc;
/* rgb */ color: rgb(61, 102, 204);
/* oklch */ color: oklch(53.7% 0.165 264.9);

Tailwind

colors: {
  custom: {
    50: '#8391dc',
    500: '#3d66cc',
    950: '#000000',
  },
}

SCSS

$custom: #3d66cc;
$custom-light: #8391dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3d66cc",
  "rgb": {
    "r": 61,
    "g": 102,
    "b": 204
  },
  "hsl": {
    "h": 222.797,
    "s": 58.367,
    "l": 51.961
  },
  "oklch": {
    "l": 0.53664,
    "c": 0.16488,
    "h": 264.9
  },
  "luminance": 0.14854
}

Semantic roles & 50–950 ramp

primary

#3D66CC

secondary

#D2C093

accent

#B546E2

background

#F8F8FD

surface

#F0F0FB

border

#CBCBD4

text

#0C0C15

muted

#7D7D83

Preview Lab

Preview with #3D66CC

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

Preview Lab → · Contrast checker → · Palette generator →