#3F4FB2#3F4FB2

#3F4FB2 is a mid, vivid blue. Relative luminance 0.099; OKLCH L 47.2% C 0.157 H 272.0°. Best body text is #FFFFFF at 7.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F4FB2
RGB	rgb(63, 79, 178)
HSL	hsl(232, 48%, 47%)
HSV	hsv(232, 65%, 70%)
CMYK	cmyk(64.6%, 55.6%, 0%, 30.2%)
CIE-LAB	lab(37.59, 25.81, -54.71)
CIE-LCH	lch(37.59, 60.49, 295.25°)
OKLab	oklab(47.2% 0.0056 -0.1572)
OKLCH	oklch(47.2% 0.157 272)
XYZ	xyz(12.8791, 9.8620, 43.3357)
Luminance	0.0986 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F4FB2 #B2A23F

analogous

#3F89B2 #3F4FB2 #683FB2

triadic

#3F4FB2 #B23F4F #4FB23F

tetradic

#3F4FB2 #B23F89 #B2A23F #3FB268

square

#3F4FB2 #B23F89 #B2A23F #3FB268

split-complementary

#3F4FB2 #B2683F #89B23F

monochromatic

#1F2758 #2F3B85 #3F4FB2 #6673C9 #939CD9

Accessibility & contrast

On white

7.06

#3F4FB2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.97

#3F4FB2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F4FB2

7.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F4FB2	#FFFFFF	#000000	##FFFFFF
##3F4FB2	1.00	7.06	2.97	7.06
#FFFFFF	7.06	1.00	21.00	1.00
#000000	2.97	21.00	1.00	21.00
##FFFFFF	7.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005EB5

Deuteranopia (green-blind)

#0054B0

Tritanopia (blue-blind)

#006779

Achromatopsia (no color)

#585858

Design tokens & code

CSS

--color: #3f4fb2;
/* rgb */ color: rgb(63, 79, 178);
/* oklch */ color: oklch(47.2% 0.157 272.0);

Tailwind

colors: {
  custom: {
    50: '#8080ca',
    500: '#3f4fb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f4fb2;
$custom-light: #8080ca;
$custom-dark: #000000;

JSON

{
  "hex": "#3f4fb2",
  "rgb": {
    "r": 63,
    "g": 79,
    "b": 178
  },
  "hsl": {
    "h": 231.652,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.47196,
    "c": 0.15733,
    "h": 272
  },
  "luminance": 0.09863
}

Semantic roles & 50–950 ramp

primary

#3F4FB2

secondary

#C4BC89

accent

#C550D7

background

#F8F7FC

surface

#EFEEF8

border

#CAC9D1

text

#0B0A13

muted

#7C7C82

Preview Lab

Preview with #3F4FB2

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

Preview Lab → · Contrast checker → · Palette generator →