#3F33A4#3F33A4

#3F33A4 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 41.0% C 0.174 H 280.3°. Best body text is #FFFFFF at 9.46:1 contrast (WCAG AA passes).

Color values

HEX	#3F33A4
RGB	rgb(63, 51, 164)
HSL	hsl(246, 53%, 42%)
HSV	hsv(246, 69%, 64%)
CMYK	cmyk(61.6%, 68.9%, 0%, 35.7%)
CIE-LAB	lab(29.67, 38.64, -59.25)
CIE-LCH	lch(29.67, 70.74, 303.11°)
OKLab	oklab(41.02% 0.031 -0.1708)
OKLCH	oklch(41.02% 0.174 280.3)
XYZ	xyz(9.9324, 6.1040, 35.7696)
Luminance	0.0611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.94

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F33A4 #98A433

analogous

#335FA4 #3F33A4 #7833A4

triadic

#3F33A4 #A43F33 #33A43F

tetradic

#3F33A4 #A4335F #98A433 #33A478

square

#3F33A4 #A4335F #98A433 #33A478

split-complementary

#3F33A4 #A47833 #5FA433

monochromatic

#1B1647 #2D2475 #3F33A4 #5A4DC8 #857BD6

Accessibility & contrast

On white

9.46

#3F33A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#3F33A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F33A4

9.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F33A4	#FFFFFF	#000000	##FFFFFF
##3F33A4	1.00	9.46	2.22	9.46
#FFFFFF	9.46	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA7

Deuteranopia (green-blind)

#0042A2

Tritanopia (blue-blind)

#005167

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3f33a4;
/* rgb */ color: rgb(63, 51, 164);
/* oklch */ color: oklch(41.0% 0.174 280.3);

Tailwind

colors: {
  custom: {
    50: '#806cc0',
    500: '#3f33a4',
    950: '#000000',
  },
}

SCSS

$custom: #3f33a4;
$custom-light: #806cc0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f33a4",
  "rgb": {
    "r": 63,
    "g": 51,
    "b": 164
  },
  "hsl": {
    "h": 246.372,
    "s": 52.558,
    "l": 42.157
  },
  "oklch": {
    "l": 0.41018,
    "c": 0.17354,
    "h": 280.3
  },
  "luminance": 0.06105
}

Semantic roles & 50–950 ramp

primary

#3F33A4

secondary

#B7BF74

accent

#DC4CCD

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3F33A4

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

Preview Lab → · Contrast checker → · Palette generator →