#3B73CC#3B73CC

#3B73CC is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.3% C 0.150 H 259.3°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#3B73CC
RGB	rgb(59, 115, 204)
HSL	hsl(217, 59%, 52%)
HSV	hsv(217, 71%, 80%)
CMYK	cmyk(71.1%, 43.6%, 0%, 20%)
CIE-LAB	lab(48.94, 11.54, -51.55)
CIE-LCH	lch(48.94, 52.82, 282.62°)
OKLab	oklab(56.34% -0.0278 -0.1474)
OKLCH	oklch(56.34% 0.15 259.3)
XYZ	xyz(18.8295, 17.5489, 59.5100)
Luminance	0.1755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B73CC #CC943B

analogous

#3BBBCC #3B73CC #4C3BCC

triadic

#3B73CC #CC3B73 #73CC3B

tetradic

#3B73CC #CC3BBB #CC943B #3BCC4C

square

#3B73CC #CC3BBB #CC943B #3BCC4C

split-complementary

#3B73CC #CC4C3B #BBCC3B

monochromatic

#1D3D70 #2A57A0 #3B73CC #6C96D9 #9CB8E5

Accessibility & contrast

On white

4.66

#3B73CC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#3B73CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3B73CC

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B73CC	#FFFFFF	#000000	##FFFFFF
##3B73CC	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#477BCF

Deuteranopia (green-blind)

#2D6ECA

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3b73cc;
/* rgb */ color: rgb(59, 115, 204);
/* oklch */ color: oklch(56.3% 0.150 259.3);

Tailwind

colors: {
  custom: {
    50: '#829adc',
    500: '#3b73cc',
    950: '#000000',
  },
}

SCSS

$custom: #3b73cc;
$custom-light: #829adc;
$custom-dark: #000000;

JSON

{
  "hex": "#3b73cc",
  "rgb": {
    "r": 59,
    "g": 115,
    "b": 204
  },
  "hsl": {
    "h": 216.828,
    "s": 58.704,
    "l": 51.569
  },
  "oklch": {
    "l": 0.56336,
    "c": 0.15004,
    "h": 259.3
  },
  "luminance": 0.17551
}

Semantic roles & 50–950 ramp

primary

#3B73CC

secondary

#D1B992

accent

#A646E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3B73CC

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

Preview Lab → · Contrast checker → · Palette generator →