#3972D0#3972D0

#3972D0 is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.3% C 0.157 H 259.9°. Best body text is #FFFFFF at 4.68:1 contrast (WCAG AA passes).

Color values

HEX	#3972D0
RGB	rgb(57, 114, 208)
HSL	hsl(217, 62%, 52%)
HSV	hsv(217, 73%, 82%)
CMYK	cmyk(72.6%, 45.2%, 0%, 18.4%)
CIE-LAB	lab(48.83, 13.35, -54.02)
CIE-LCH	lch(48.83, 55.64, 283.88°)
OKLab	oklab(56.31% -0.0276 -0.1548)
OKLCH	oklch(56.31% 0.157 259.9)
XYZ	xyz(19.0857, 17.4565, 62.0259)
Luminance	0.1746 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3972D0 #D09739

analogous

#39BED0 #3972D0 #4C39D0

triadic

#3972D0 #D03972 #72D039

tetradic

#3972D0 #D039BE #D09739 #39D04C

square

#3972D0 #D039BE #D09739 #39D04C

split-complementary

#3972D0 #D04C39 #BED039

monochromatic

#1B3D73 #2757A5 #3972D0 #6A95DC #9CB8E7

Accessibility & contrast

On white

4.68

#3972D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.49

#3972D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3972D0

4.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3972D0	#FFFFFF	#000000	##FFFFFF
##3972D0	1.00	4.68	4.49	4.68
#FFFFFF	4.68	1.00	21.00	1.00
#000000	4.49	21.00	1.00	21.00
##FFFFFF	4.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#427BD4

Deuteranopia (green-blind)

#226ECE

Tritanopia (blue-blind)

#008897

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3972d0;
/* rgb */ color: rgb(57, 114, 208);
/* oklch */ color: oklch(56.3% 0.157 259.9);

Tailwind

colors: {
  custom: {
    50: '#8299df',
    500: '#3972d0',
    950: '#000000',
  },
}

SCSS

$custom: #3972d0;
$custom-light: #8299df;
$custom-dark: #000000;

JSON

{
  "hex": "#3972d0",
  "rgb": {
    "r": 57,
    "g": 114,
    "b": 208
  },
  "hsl": {
    "h": 217.351,
    "s": 61.633,
    "l": 51.961
  },
  "oklch": {
    "l": 0.56305,
    "c": 0.1572,
    "h": 259.9
  },
  "luminance": 0.17459
}

Semantic roles & 50–950 ramp

primary

#3972D0

secondary

#D3BA91

accent

#A843E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3972D0

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

Preview Lab → · Contrast checker → · Palette generator →