#3972CA#3972CA

#3972CA is a mid, vivid blue. Relative luminance 0.172; OKLCH L 55.9% C 0.149 H 258.9°. Best body text is #FFFFFF at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3972CA
RGB	rgb(57, 114, 202)
HSL	hsl(216, 58%, 51%)
HSV	hsv(216, 72%, 79%)
CMYK	cmyk(71.8%, 43.6%, 0%, 20.8%)
CIE-LAB	lab(48.47, 11.16, -51.17)
CIE-LCH	lch(48.47, 52.37, 282.30°)
OKLab	oklab(55.91% -0.0287 -0.1464)
OKLCH	oklch(55.91% 0.149 258.9)
XYZ	xyz(18.3615, 17.1668, 58.2115)
Luminance	0.1717 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3972CA #CA9139

analogous

#39BACA #3972CA #4839CA

triadic

#3972CA #CA3972 #72CA39

tetradic

#3972CA #CA39BA #CA9139 #39CA48

square

#3972CA #CA39BA #CA9139 #39CA48

split-complementary

#3972CA #CA4839 #BACA39

monochromatic

#1D3C6C #2A579C #3972CA #6994D7 #9AB7E4

Accessibility & contrast

On white

4.74

#3972CA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.43

#3972CA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3972CA

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3972CA	#FFFFFF	#000000	##FFFFFF
##3972CA	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)

#477ACD

Deuteranopia (green-blind)

#2C6DC8

Tritanopia (blue-blind)

#008794

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3972ca;
/* rgb */ color: rgb(57, 114, 202);
/* oklch */ color: oklch(55.9% 0.149 258.9);

Tailwind

colors: {
  custom: {
    50: '#819adb',
    500: '#3972ca',
    950: '#000000',
  },
}

SCSS

$custom: #3972ca;
$custom-light: #819adb;
$custom-dark: #000000;

JSON

{
  "hex": "#3972ca",
  "rgb": {
    "r": 57,
    "g": 114,
    "b": 202
  },
  "hsl": {
    "h": 216.414,
    "s": 57.769,
    "l": 50.784
  },
  "oklch": {
    "l": 0.55911,
    "c": 0.14917,
    "h": 258.9
  },
  "luminance": 0.17169
}

Semantic roles & 50–950 ramp

primary

#3972CA

secondary

#D0B68F

accent

#A447E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3972CA

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

Preview Lab → · Contrast checker → · Palette generator →