#3973C5#3973C5

#3973C5 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 55.8% C 0.141 H 257.5°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3973C5
RGB	rgb(57, 115, 197)
HSL	hsl(215, 55%, 50%)
HSV	hsv(215, 71%, 77%)
CMYK	cmyk(71.1%, 41.6%, 0%, 22.7%)
CIE-LAB	lab(48.46, 8.71, -48.32)
CIE-LCH	lch(48.46, 49.09, 280.22°)
OKLab	oklab(55.81% -0.0306 -0.138)
OKLCH	oklch(55.81% 0.141 257.5)
XYZ	xyz(17.8925, 17.1606, 55.1819)
Luminance	0.1716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3973C5 #C58B39

analogous

#39B9C5 #3973C5 #4539C5

triadic

#3973C5 #C53973 #73C539

tetradic

#3973C5 #C539B9 #C58B39 #39C545

square

#3973C5 #C539B9 #C58B39 #39C545

split-complementary

#3973C5 #C54539 #B9C539

monochromatic

#1E3C66 #2B5796 #3973C5 #6894D3 #97B6E1

Accessibility & contrast

On white

4.74

#3973C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#3973C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3973C5

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3973C5	#FFFFFF	#000000	##FFFFFF
##3973C5	1.00	4.74	4.43	4.74
#FFFFFF	4.74	1.00	21.00	1.00
#000000	4.43	21.00	1.00	21.00
##FFFFFF	4.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C7AC8

Deuteranopia (green-blind)

#356DC3

Tritanopia (blue-blind)

#008692

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3973c5;
/* rgb */ color: rgb(57, 115, 197);
/* oklch */ color: oklch(55.8% 0.141 257.5);

Tailwind

colors: {
  custom: {
    50: '#809ad7',
    500: '#3973c5',
    950: '#000000',
  },
}

SCSS

$custom: #3973c5;
$custom-light: #809ad7;
$custom-dark: #000000;

JSON

{
  "hex": "#3973c5",
  "rgb": {
    "r": 57,
    "g": 115,
    "b": 197
  },
  "hsl": {
    "h": 215.143,
    "s": 55.118,
    "l": 49.804
  },
  "oklch": {
    "l": 0.5581,
    "c": 0.14134,
    "h": 257.5
  },
  "luminance": 0.17163
}

Semantic roles & 50–950 ramp

primary

#3973C5

secondary

#CDB28D

accent

#A149DE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0E14

muted

#7C7E83

Preview Lab

Preview with #3973C5

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

Preview Lab → · Contrast checker → · Palette generator →