#3973C6#3973C6

#3973C6 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 55.9% C 0.143 H 257.7°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3973C6
RGB	rgb(57, 115, 198)
HSL	hsl(215, 55%, 50%)
HSV	hsv(215, 71%, 78%)
CMYK	cmyk(71.2%, 41.9%, 0%, 22.4%)
CIE-LAB	lab(48.52, 9.07, -48.80)
CIE-LCH	lch(48.52, 49.63, 280.53°)
OKLab	oklab(55.87% -0.0304 -0.1394)
OKLCH	oklch(55.87% 0.143 257.7)
XYZ	xyz(18.0074, 17.2066, 55.7873)
Luminance	0.1721 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3973C6 #C68C39

analogous

#39BAC6 #3973C6 #4539C6

triadic

#3973C6 #C63973 #73C639

tetradic

#3973C6 #C639BA #C68C39 #39C645

square

#3973C6 #C639BA #C68C39 #39C645

split-complementary

#3973C6 #C64539 #BAC639

monochromatic

#1E3C67 #2B5796 #3973C6 #6995D4 #98B6E1

Accessibility & contrast

On white

4.73

#3973C6 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3973C6 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3973C6

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3973C6	#FFFFFF	#000000	##FFFFFF
##3973C6	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B7AC9

Deuteranopia (green-blind)

#346DC4

Tritanopia (blue-blind)

#008693

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3973c6;
/* rgb */ color: rgb(57, 115, 198);
/* oklch */ color: oklch(55.9% 0.143 257.7);

Tailwind

colors: {
  custom: {
    50: '#809ad8',
    500: '#3973c6',
    950: '#000000',
  },
}

SCSS

$custom: #3973c6;
$custom-light: #809ad8;
$custom-dark: #000000;

JSON

{
  "hex": "#3973c6",
  "rgb": {
    "r": 57,
    "g": 115,
    "b": 198
  },
  "hsl": {
    "h": 215.319,
    "s": 55.294,
    "l": 50
  },
  "oklch": {
    "l": 0.55873,
    "c": 0.14268,
    "h": 257.7
  },
  "luminance": 0.17209
}

Semantic roles & 50–950 ramp

primary

#3973C6

secondary

#CDB38E

accent

#A149DF

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0C0E14

muted

#7D7E83

Preview Lab

Preview with #3973C6

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

Preview Lab → · Contrast checker → · Palette generator →