#3F34A5#3F34A5

#3F34A5 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.3% C 0.174 H 280.0°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#3F34A5
RGB	rgb(63, 52, 165)
HSL	hsl(246, 52%, 43%)
HSV	hsv(246, 68%, 65%)
CMYK	cmyk(61.8%, 68.5%, 0%, 35.3%)
CIE-LAB	lab(29.98, 38.37, -59.35)
CIE-LCH	lch(29.98, 70.68, 302.88°)
OKLab	oklab(41.27% 0.03 -0.171)
OKLCH	oklch(41.27% 0.174 280)
XYZ	xyz(10.0673, 6.2286, 36.2617)
Luminance	0.0623 (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

#3F34A5 #9AA534

analogous

#3461A5 #3F34A5 #7834A5

triadic

#3F34A5 #A53F34 #34A53F

tetradic

#3F34A5 #A53461 #9AA534 #34A578

square

#3F34A5 #A53461 #9AA534 #34A578

split-complementary

#3F34A5 #A57834 #61A534

monochromatic

#1B1748 #2D2576 #3F34A5 #5A4FC7 #867DD6

Accessibility & contrast

On white

9.35

#3F34A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#3F34A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F34A5

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F34A5	#FFFFFF	#000000	##FFFFFF
##3F34A5	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA8

Deuteranopia (green-blind)

#0042A3

Tritanopia (blue-blind)

#005268

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3f34a5;
/* rgb */ color: rgb(63, 52, 165);
/* oklch */ color: oklch(41.3% 0.174 280.0);

Tailwind

colors: {
  custom: {
    50: '#806dc1',
    500: '#3f34a5',
    950: '#000000',
  },
}

SCSS

$custom: #3f34a5;
$custom-light: #806dc1;
$custom-dark: #000000;

JSON

{
  "hex": "#3f34a5",
  "rgb": {
    "r": 63,
    "g": 52,
    "b": 165
  },
  "hsl": {
    "h": 245.841,
    "s": 52.074,
    "l": 42.549
  },
  "oklch": {
    "l": 0.41268,
    "c": 0.17365,
    "h": 280
  },
  "luminance": 0.06229
}

Semantic roles & 50–950 ramp

primary

#3F34A5

secondary

#B8BF76

accent

#DC4CCE

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3F34A5

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

Preview Lab → · Contrast checker → · Palette generator →