#3F33AC#3F33AC

#3F33AC is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.8% C 0.184 H 279.3°. Best body text is #FFFFFF at 9.21:1 contrast (WCAG AA passes).

Color values

HEX	#3F33AC
RGB	rgb(63, 51, 172)
HSL	hsl(246, 54%, 44%)
HSV	hsv(246, 70%, 67%)
CMYK	cmyk(63.4%, 70.3%, 0%, 32.5%)
CIE-LAB	lab(30.41, 41.24, -62.87)
CIE-LCH	lch(30.41, 75.18, 303.26°)
OKLab	oklab(41.77% 0.0297 -0.1813)
OKLCH	oklch(41.77% 0.184 279.3)
XYZ	xyz(10.6777, 6.4021, 39.6948)
Luminance	0.0640 (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

#3F33AC #A0AC33

analogous

#3363AC #3F33AC #7B33AC

triadic

#3F33AC #AC3F33 #33AC3F

tetradic

#3F33AC #AC3363 #A0AC33 #33AC7B

square

#3F33AC #AC3363 #A0AC33 #33AC7B

split-complementary

#3F33AC #AC7B33 #63AC33

monochromatic

#1C174E #2E257D #3F33AC #5D51CB #8980D9

Accessibility & contrast

On white

9.21

#3F33AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3F33AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33AC

9.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33AC	#FFFFFF	#000000	##FFFFFF
##3F33AC	1.00	9.21	2.28	9.21
#FFFFFF	9.21	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB0

Deuteranopia (green-blind)

#0043AA

Tritanopia (blue-blind)

#00546C

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3f33ac;
/* rgb */ color: rgb(63, 51, 172);
/* oklch */ color: oklch(41.8% 0.184 279.3);

Tailwind

colors: {
  custom: {
    50: '#816cc6',
    500: '#3f33ac',
    950: '#000000',
  },
}

SCSS

$custom: #3f33ac;
$custom-light: #816cc6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33ac",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 172
  },
  "hsl": {
    "h": 245.95,
    "s": 54.26,
    "l": 43.725
  },
  "oklch": {
    "l": 0.41768,
    "c": 0.18375,
    "h": 279.3
  },
  "luminance": 0.06403
}

Semantic roles & 50–950 ramp

primary

#3F33AC

secondary

#BBC278

accent

#DE4ACF

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F33AC

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

Preview Lab → · Contrast checker → · Palette generator →