#3F72CE#3F72CE

#3F72CE is a mid, vivid blue. Relative luminance 0.175; OKLCH L 56.4% C 0.153 H 261.1°. Best body text is #FFFFFF at 4.66:1 contrast (WCAG AA passes).

Color values

HEX	#3F72CE
RGB	rgb(63, 114, 206)
HSL	hsl(219, 59%, 53%)
HSV	hsv(219, 69%, 81%)
CMYK	cmyk(69.4%, 44.7%, 0%, 19.2%)
CIE-LAB	lab(48.94, 13.48, -52.69)
CIE-LCH	lch(48.94, 54.38, 284.35°)
OKLab	oklab(56.42% -0.0235 -0.1507)
OKLCH	oklch(56.42% 0.153 261.1)
XYZ	xyz(19.2038, 17.5456, 60.7551)
Luminance	0.1755 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F72CE #CE9B3F

analogous

#3FBACE #3F72CE #533FCE

triadic

#3F72CE #CE3F72 #72CE3F

tetradic

#3F72CE #CE3FBA #CE9B3F #3FCE53

square

#3F72CE #CE3FBA #CE9B3F #3FCE53

split-complementary

#3F72CE #CE533F #BACE3F

monochromatic

#1E3D75 #2A56A6 #3F72CE #7096DA #A1BAE7

Accessibility & contrast

On white

4.66

#3F72CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#3F72CE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3F72CE

4.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F72CE	#FFFFFF	#000000	##FFFFFF
##3F72CE	1.00	4.66	4.51	4.66
#FFFFFF	4.66	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#447BD1

Deuteranopia (green-blind)

#296ECC

Tritanopia (blue-blind)

#008796

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3f72ce;
/* rgb */ color: rgb(63, 114, 206);
/* oklch */ color: oklch(56.4% 0.153 261.1);

Tailwind

colors: {
  custom: {
    50: '#849add',
    500: '#3f72ce',
    950: '#000000',
  },
}

SCSS

$custom: #3f72ce;
$custom-light: #849add;
$custom-dark: #000000;

JSON

{
  "hex": "#3f72ce",
  "rgb": {
    "r": 63,
    "g": 114,
    "b": 206
  },
  "hsl": {
    "h": 218.601,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.56415,
    "c": 0.15257,
    "h": 261.1
  },
  "luminance": 0.17548
}

Semantic roles & 50–950 ramp

primary

#3F72CE

secondary

#D3BD95

accent

#AA45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F72CE

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

Preview Lab → · Contrast checker → · Palette generator →