#3F34B7#3F34B7

#3F34B7 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 43.0% C 0.196 H 277.9°. Best body text is #FFFFFF at 8.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F34B7
RGB	rgb(63, 52, 183)
HSL	hsl(245, 56%, 46%)
HSV	hsv(245, 72%, 72%)
CMYK	cmyk(65.6%, 71.6%, 0%, 28.2%)
CIE-LAB	lab(31.65, 44.21, -67.38)
CIE-LCH	lch(31.65, 80.59, 303.27°)
OKLab	oklab(42.97% 0.0271 -0.1945)
OKLCH	oklch(42.97% 0.196 277.9)
XYZ	xyz(11.8224, 6.9307, 45.5053)
Luminance	0.0693 (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

#3F34B7 #ACB734

analogous

#346AB7 #3F34B7 #8034B7

triadic

#3F34B7 #B73F34 #34B73F

tetradic

#3F34B7 #B7346A #ACB734 #34B780

square

#3F34B7 #B7346A #ACB734 #34B780

split-complementary

#3F34B7 #B78034 #6AB734

monochromatic

#1E1958 #2F2687 #3F34B7 #6359D0 #8F88DD

Accessibility & contrast

On white

8.80

#3F34B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.39

#3F34B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F34B7

8.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F34B7	#FFFFFF	#000000	##FFFFFF
##3F34B7	1.00	8.80	2.39	8.80
#FFFFFF	8.80	1.00	21.00	1.00
#000000	2.39	21.00	1.00	21.00
##FFFFFF	8.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050BB

Deuteranopia (green-blind)

#0045B5

Tritanopia (blue-blind)

#005872

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3f34b7;
/* rgb */ color: rgb(63, 52, 183);
/* oklch */ color: oklch(43.0% 0.196 277.9);

Tailwind

colors: {
  custom: {
    50: '#846dce',
    500: '#3f34b7',
    950: '#000000',
  },
}

SCSS

$custom: #3f34b7;
$custom-light: #846dce;
$custom-dark: #000000;

JSON

{
  "hex": "#3f34b7",
  "rgb": {
    "r": 63,
    "g": 52,
    "b": 183
  },
  "hsl": {
    "h": 245.038,
    "s": 55.745,
    "l": 46.078
  },
  "oklch": {
    "l": 0.42971,
    "c": 0.19641,
    "h": 277.9
  },
  "luminance": 0.06932
}

Semantic roles & 50–950 ramp

primary

#3F34B7

secondary

#C1C780

accent

#DF49D2

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #3F34B7

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

Preview Lab → · Contrast checker → · Palette generator →