#3972D7#3972D7

#3972D7 is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.8% C 0.167 H 260.9°. Best body text is #FFFFFF at 4.60:1 contrast (WCAG AA passes).

Color values

HEX	#3972D7
RGB	rgb(57, 114, 215)
HSL	hsl(218, 66%, 53%)
HSV	hsv(218, 73%, 84%)
CMYK	cmyk(73.5%, 47%, 0%, 15.7%)
CIE-LAB	lab(49.26, 15.92, -57.30)
CIE-LCH	lch(49.26, 59.47, 285.53°)
OKLab	oklab(56.78% -0.0265 -0.1644)
OKLCH	oklch(56.78% 0.167 260.9)
XYZ	xyz(19.9660, 17.8086, 66.6619)
Luminance	0.1781 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3972D7 #D79E39

analogous

#39C1D7 #3972D7 #4F39D7

triadic

#3972D7 #D73972 #72D739

tetradic

#3972D7 #D739C1 #D79E39 #39D74F

square

#3972D7 #D739C1 #D79E39 #39D74F

split-complementary

#3972D7 #D74F39 #C1D739

monochromatic

#193D7C #2356AF #3972D7 #6C96E1 #9FBBEC

Accessibility & contrast

On white

4.60

#3972D7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#3972D7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3972D7

4.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3972D7	#FFFFFF	#000000	##FFFFFF
##3972D7	1.00	4.60	4.56	4.60
#FFFFFF	4.60	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3B7DDB

Deuteranopia (green-blind)

#0F6ED5

Tritanopia (blue-blind)

#008A9A

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3972d7;
/* rgb */ color: rgb(57, 114, 215);
/* oklch */ color: oklch(56.8% 0.167 260.9);

Tailwind

colors: {
  custom: {
    50: '#8499e4',
    500: '#3972d7',
    950: '#000000',
  },
}

SCSS

$custom: #3972d7;
$custom-light: #8499e4;
$custom-dark: #000000;

JSON

{
  "hex": "#3972d7",
  "rgb": {
    "r": 57,
    "g": 114,
    "b": 215
  },
  "hsl": {
    "h": 218.354,
    "s": 66.387,
    "l": 53.333
  },
  "oklch": {
    "l": 0.56777,
    "c": 0.16654,
    "h": 260.9
  },
  "luminance": 0.17811
}

Semantic roles & 50–950 ramp

primary

#3972D7

secondary

#D8BF94

accent

#AC3EE9

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0D16

muted

#7D7E84

Preview Lab

Preview with #3972D7

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

Preview Lab → · Contrast checker → · Palette generator →