#3F33AD#3F33AD

#3F33AD is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.9% C 0.185 H 279.2°. Best body text is #FFFFFF at 9.18:1 contrast (WCAG AA passes).

Color values

HEX	#3F33AD
RGB	rgb(63, 51, 173)
HSL	hsl(246, 54%, 44%)
HSV	hsv(246, 71%, 68%)
CMYK	cmyk(63.6%, 70.5%, 0%, 32.2%)
CIE-LAB	lab(30.50, 41.56, -63.31)
CIE-LCH	lch(30.50, 75.73, 303.28°)
OKLab	oklab(41.86% 0.0296 -0.1826)
OKLCH	oklch(41.86% 0.185 279.2)
XYZ	xyz(10.7741, 6.4407, 40.2025)
Luminance	0.0644 (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

#3F33AD #A1AD33

analogous

#3364AD #3F33AD #7C33AD

triadic

#3F33AD #AD3F33 #33AD3F

tetradic

#3F33AD #AD3364 #A1AD33 #33AD7C

square

#3F33AD #AD3364 #A1AD33 #33AD7C

split-complementary

#3F33AD #AD7C33 #64AD33

monochromatic

#1D174E #2E257E #3F33AD #5D51CC #8981DA

Accessibility & contrast

On white

9.18

#3F33AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#3F33AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33AD

9.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33AD	#FFFFFF	#000000	##FFFFFF
##3F33AD	1.00	9.18	2.29	9.18
#FFFFFF	9.18	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB1

Deuteranopia (green-blind)

#0043AB

Tritanopia (blue-blind)

#00546C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3f33ad;
/* rgb */ color: rgb(63, 51, 173);
/* oklch */ color: oklch(41.9% 0.185 279.2);

Tailwind

colors: {
  custom: {
    50: '#826cc7',
    500: '#3f33ad',
    950: '#000000',
  },
}

SCSS

$custom: #3f33ad;
$custom-light: #826cc7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33ad",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 173
  },
  "hsl": {
    "h": 245.902,
    "s": 54.464,
    "l": 43.922
  },
  "oklch": {
    "l": 0.41863,
    "c": 0.18501,
    "h": 279.2
  },
  "luminance": 0.06442
}

Semantic roles & 50–950 ramp

primary

#3F33AD

secondary

#BCC379

accent

#DE4ACF

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F33AD

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

Preview Lab → · Contrast checker → · Palette generator →