#3972CE#3972CE

#3972CE is a mid, vivid blue. Relative luminance 0.174; OKLCH L 56.2% C 0.155 H 259.6°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3972CE
RGB	rgb(57, 114, 206)
HSL	hsl(217, 60%, 52%)
HSV	hsv(217, 72%, 81%)
CMYK	cmyk(72.3%, 44.7%, 0%, 19.2%)
CIE-LAB	lab(48.71, 12.62, -53.07)
CIE-LCH	lch(48.71, 54.55, 283.38°)
OKLab	oklab(56.17% -0.028 -0.152)
OKLCH	oklch(56.17% 0.155 259.6)
XYZ	xyz(18.8412, 17.3587, 60.7381)
Luminance	0.1736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3972CE #CE9539

analogous

#39BDCE #3972CE #4B39CE

triadic

#3972CE #CE3972 #72CE39

tetradic

#3972CE #CE39BD #CE9539 #39CE4B

square

#3972CE #CE39BD #CE9539 #39CE4B

split-complementary

#3972CE #CE4B39 #BDCE39

monochromatic

#1C3C71 #2857A2 #3972CE #6A95DA #9BB8E6

Accessibility & contrast

On white

4.70

#3972CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#3972CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3972CE

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3972CE	#FFFFFF	#000000	##FFFFFF
##3972CE	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#437BD2

Deuteranopia (green-blind)

#266DCC

Tritanopia (blue-blind)

#008896

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3972ce;
/* rgb */ color: rgb(57, 114, 206);
/* oklch */ color: oklch(56.2% 0.155 259.6);

Tailwind

colors: {
  custom: {
    50: '#829add',
    500: '#3972ce',
    950: '#000000',
  },
}

SCSS

$custom: #3972ce;
$custom-light: #829add;
$custom-dark: #000000;

JSON

{
  "hex": "#3972ce",
  "rgb": {
    "r": 57,
    "g": 114,
    "b": 206
  },
  "hsl": {
    "h": 217.047,
    "s": 60.324,
    "l": 51.569
  },
  "oklch": {
    "l": 0.56173,
    "c": 0.15452,
    "h": 259.6
  },
  "luminance": 0.17361
}

Semantic roles & 50–950 ramp

primary

#3972CE

secondary

#D2B991

accent

#A744E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3972CE

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

Preview Lab → · Contrast checker → · Palette generator →