#3972C5#3972C5

#3972C5 is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.6% C 0.142 H 258.0°. Best body text is #FFFFFF at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#3972C5
RGB	rgb(57, 114, 197)
HSL	hsl(216, 55%, 50%)
HSV	hsv(216, 71%, 77%)
CMYK	cmyk(71.1%, 42.1%, 0%, 22.7%)
CIE-LAB	lab(48.18, 9.33, -48.77)
CIE-LCH	lch(48.18, 49.66, 280.83°)
OKLab	oklab(55.59% -0.0297 -0.1393)
OKLCH	oklch(55.59% 0.142 258)
XYZ	xyz(17.7790, 16.9338, 55.1441)
Luminance	0.1694 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3972C5 #C58C39

analogous

#39B8C5 #3972C5 #4639C5

triadic

#3972C5 #C53972 #72C539

tetradic

#3972C5 #C539B8 #C58C39 #39C546

square

#3972C5 #C539B8 #C58C39 #39C546

split-complementary

#3972C5 #C54639 #B8C539

monochromatic

#1E3B66 #2B5796 #3972C5 #6894D3 #97B5E1

Accessibility & contrast

On white

4.79

#3972C5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.39

#3972C5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3972C5

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3972C5	#FFFFFF	#000000	##FFFFFF
##3972C5	1.00	4.79	4.39	4.79
#FFFFFF	4.79	1.00	21.00	1.00
#000000	4.39	21.00	1.00	21.00
##FFFFFF	4.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A79C8

Deuteranopia (green-blind)

#336CC3

Tritanopia (blue-blind)

#008592

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3972c5;
/* rgb */ color: rgb(57, 114, 197);
/* oklch */ color: oklch(55.6% 0.142 258.0);

Tailwind

colors: {
  custom: {
    50: '#809ad7',
    500: '#3972c5',
    950: '#000000',
  },
}

SCSS

$custom: #3972c5;
$custom-light: #809ad7;
$custom-dark: #000000;

JSON

{
  "hex": "#3972c5",
  "rgb": {
    "r": 57,
    "g": 114,
    "b": 197
  },
  "hsl": {
    "h": 215.571,
    "s": 55.118,
    "l": 49.804
  },
  "oklch": {
    "l": 0.55589,
    "c": 0.14247,
    "h": 258
  },
  "luminance": 0.16936
}

Semantic roles & 50–950 ramp

primary

#3972C5

secondary

#CDB38D

accent

#A249DE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3972C5

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

Preview Lab → · Contrast checker → · Palette generator →