#3F4FA7#3F4FA7

#3F4FA7 is a mid, vivid blue. Relative luminance 0.094; OKLCH L 46.4% C 0.142 H 272.0°. Best body text is #FFFFFF at 7.27:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FA7
RGB	rgb(63, 79, 167)
HSL	hsl(231, 45%, 45%)
HSV	hsv(231, 62%, 65%)
CMYK	cmyk(62.3%, 52.7%, 0%, 34.5%)
CIE-LAB	lab(36.81, 21.92, -49.44)
CIE-LCH	lch(36.81, 54.08, 293.91°)
OKLab	oklab(46.36% 0.0049 -0.1417)
OKLCH	oklch(46.36% 0.142 272)
XYZ	xyz(11.8186, 9.4378, 37.7506)
Luminance	0.0944 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FA7 #A7973F

analogous

#3F83A7 #3F4FA7 #633FA7

triadic

#3F4FA7 #A73F4F #4FA73F

tetradic

#3F4FA7 #A73F83 #A7973F #3FA763

square

#3F4FA7 #A73F83 #A7973F #3FA763

split-complementary

#3F4FA7 #A7633F #83A73F

monochromatic

#1D254E #2E3A7B #3F4FA7 #606FC3 #8D98D4

Accessibility & contrast

On white

7.27

#3F4FA7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.89

#3F4FA7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4FA7

7.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FA7	#FFFFFF	#000000	##FFFFFF
##3F4FA7	1.00	7.27	2.89	7.27
#FFFFFF	7.27	1.00	21.00	1.00
#000000	2.89	21.00	1.00	21.00
##FFFFFF	7.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B5BAA

Deuteranopia (green-blind)

#0052A5

Tritanopia (blue-blind)

#006373

Achromatopsia (no color)

#575757

Design tokens & code

CSS

--color: #3f4fa7;
/* rgb */ color: rgb(63, 79, 167);
/* oklch */ color: oklch(46.4% 0.142 272.0);

Tailwind

colors: {
  custom: {
    50: '#7e80c2',
    500: '#3f4fa7',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fa7;
$custom-light: #7e80c2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fa7",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 167
  },
  "hsl": {
    "h": 230.769,
    "s": 45.217,
    "l": 45.098
  },
  "oklch": {
    "l": 0.46362,
    "c": 0.14181,
    "h": 272
  },
  "luminance": 0.09439
}

Semantic roles & 50–950 ramp

primary

#3F4FA7

secondary

#BFB683

accent

#C153D5

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A12

muted

#7C7C81

Preview Lab

Preview with #3F4FA7

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

Preview Lab → · Contrast checker → · Palette generator →