#3F33AF#3F33AF

#3F33AF is a dark, vivid blue. Relative luminance 0.065; OKLCH L 42.1% C 0.188 H 279.0°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#3F33AF
RGB	rgb(63, 51, 175)
HSL	hsl(246, 55%, 44%)
HSV	hsv(246, 71%, 69%)
CMYK	cmyk(64%, 70.9%, 0%, 31.4%)
CIE-LAB	lab(30.69, 42.20, -64.20)
CIE-LCH	lch(30.69, 76.83, 303.32°)
OKLab	oklab(42.05% 0.0292 -0.1852)
OKLCH	oklch(42.05% 0.188 279)
XYZ	xyz(10.9691, 6.5187, 41.2293)
Luminance	0.0652 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F33AF #A3AF33

analogous

#3365AF #3F33AF #7D33AF

triadic

#3F33AF #AF3F33 #33AF3F

tetradic

#3F33AF #AF3365 #A3AF33 #33AF7D

square

#3F33AF #AF3365 #A3AF33 #33AF7D

split-complementary

#3F33AF #AF7D33 #65AF33

monochromatic

#1D1750 #2E2580 #3F33AF #5E52CD #8A82DB

Accessibility & contrast

On white

9.11

#3F33AF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.30

#3F33AF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33AF

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33AF	#FFFFFF	#000000	##FFFFFF
##3F33AF	1.00	9.11	2.30	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.30	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB3

Deuteranopia (green-blind)

#0043AD

Tritanopia (blue-blind)

#00556D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3f33af;
/* rgb */ color: rgb(63, 51, 175);
/* oklch */ color: oklch(42.1% 0.188 279.0);

Tailwind

colors: {
  custom: {
    50: '#826cc8',
    500: '#3f33af',
    950: '#000000',
  },
}

SCSS

$custom: #3f33af;
$custom-light: #826cc8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33af",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 175
  },
  "hsl": {
    "h": 245.806,
    "s": 54.867,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42053,
    "c": 0.18752,
    "h": 279
  },
  "luminance": 0.0652
}

Semantic roles & 50–950 ramp

primary

#3F33AF

secondary

#BDC47A

accent

#DE4AD0

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F33AF

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

Preview Lab → · Contrast checker → · Palette generator →