#3B73CF#3B73CF

#3B73CF is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.154 H 259.8°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3B73CF
RGB	rgb(59, 115, 207)
HSL	hsl(217, 61%, 52%)
HSV	hsv(217, 71%, 81%)
CMYK	cmyk(71.5%, 44.4%, 0%, 18.8%)
CIE-LAB	lab(49.12, 12.64, -52.97)
CIE-LCH	lch(49.12, 54.46, 283.42°)
OKLab	oklab(56.53% -0.0272 -0.1516)
OKLCH	oklch(56.53% 0.154 259.8)
XYZ	xyz(19.1928, 17.6942, 61.4232)
Luminance	0.1770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B73CF #CF973B

analogous

#3BBDCF #3B73CF #4D3BCF

triadic

#3B73CF #CF3B73 #73CF3B

tetradic

#3B73CF #CF3BBD #CF973B #3BCF4D

square

#3B73CF #CF3BBD #CF973B #3BCF4D

split-complementary

#3B73CF #CF4D3B #BDCF3B

monochromatic

#1C3D73 #2857A5 #3B73CF #6C96DB #9DB9E7

Accessibility & contrast

On white

4.63

#3B73CF on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#3B73CF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3B73CF

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B73CF	#FFFFFF	#000000	##FFFFFF
##3B73CF	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#457CD3

Deuteranopia (green-blind)

#286ECD

Tritanopia (blue-blind)

#008997

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3b73cf;
/* rgb */ color: rgb(59, 115, 207);
/* oklch */ color: oklch(56.5% 0.154 259.8);

Tailwind

colors: {
  custom: {
    50: '#839ade',
    500: '#3b73cf',
    950: '#000000',
  },
}

SCSS

$custom: #3b73cf;
$custom-light: #839ade;
$custom-dark: #000000;

JSON

{
  "hex": "#3b73cf",
  "rgb": {
    "r": 59,
    "g": 115,
    "b": 207
  },
  "hsl": {
    "h": 217.297,
    "s": 60.656,
    "l": 52.157
  },
  "oklch": {
    "l": 0.56532,
    "c": 0.15407,
    "h": 259.8
  },
  "luminance": 0.17696
}

Semantic roles & 50–950 ramp

primary

#3B73CF

secondary

#D3BB93

accent

#A744E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3B73CF

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

Preview Lab → · Contrast checker → · Palette generator →