#3972C4#3972C4

#3972C4 is a mid, vivid blue. Relative luminance 0.169; OKLCH L 55.5% C 0.141 H 257.8°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3972C4
RGB	rgb(57, 114, 196)
HSL	hsl(215, 55%, 50%)
HSV	hsv(215, 71%, 77%)
CMYK	cmyk(70.9%, 41.8%, 0%, 23.1%)
CIE-LAB	lab(48.12, 8.96, -48.29)
CIE-LCH	lch(48.12, 49.11, 280.52°)
OKLab	oklab(55.53% -0.0299 -0.1379)
OKLCH	oklch(55.53% 0.141 257.8)
XYZ	xyz(17.6648, 16.8881, 54.5426)
Luminance	0.1689 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3972C4 #C48B39

analogous

#39B8C4 #3972C4 #4639C4

triadic

#3972C4 #C43972 #72C439

tetradic

#3972C4 #C439B8 #C48B39 #39C446

square

#3972C4 #C439B8 #C48B39 #39C446

split-complementary

#3972C4 #C44639 #B8C439

monochromatic

#1D3B65 #2B5695 #3972C4 #6793D3 #97B5E1

Accessibility & contrast

On white

4.80

#3972C4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.38

#3972C4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3972C4

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3972C4	#FFFFFF	#000000	##FFFFFF
##3972C4	1.00	4.80	4.38	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.38	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B79C7

Deuteranopia (green-blind)

#346CC2

Tritanopia (blue-blind)

#008591

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3972c4;
/* rgb */ color: rgb(57, 114, 196);
/* oklch */ color: oklch(55.5% 0.141 257.8);

Tailwind

colors: {
  custom: {
    50: '#809ad6',
    500: '#3972c4',
    950: '#000000',
  },
}

SCSS

$custom: #3972c4;
$custom-light: #809ad6;
$custom-dark: #000000;

JSON

{
  "hex": "#3972c4",
  "rgb": {
    "r": 57,
    "g": 114,
    "b": 196
  },
  "hsl": {
    "h": 215.396,
    "s": 54.941,
    "l": 49.608
  },
  "oklch": {
    "l": 0.55526,
    "c": 0.14112,
    "h": 257.8
  },
  "luminance": 0.1689
}

Semantic roles & 50–950 ramp

primary

#3972C4

secondary

#CCB28D

accent

#A14ADE

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D14

muted

#7C7E83

Preview Lab

Preview with #3972C4

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

Preview Lab → · Contrast checker → · Palette generator →