#3F43AD#3F43AD

#3F43AD is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.5% C 0.166 H 275.7°. Best body text is #FFFFFF at 8.02:1 contrast (WCAG AA passes).

Color values

HEX	#3F43AD
RGB	rgb(63, 67, 173)
HSL	hsl(238, 47%, 46%)
HSV	hsv(238, 64%, 68%)
CMYK	cmyk(63.6%, 61.3%, 0%, 32.2%)
CIE-LAB	lab(34.16, 31.77, -57.32)
CIE-LCH	lch(34.16, 65.53, 299.00°)
OKLab	oklab(44.53% 0.0165 -0.165)
OKLCH	oklch(44.53% 0.166 275.7)
XYZ	xyz(11.5974, 8.0873, 40.4769)
Luminance	0.0809 (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

#3F43AD #ADA93F

analogous

#3F7AAD #3F43AD #723FAD

triadic

#3F43AD #AD3F43 #43AD3F

tetradic

#3F43AD #AD3F7A #ADA93F #3FAD72

square

#3F43AD #AD3F7A #ADA93F #3FAD72

split-complementary

#3F43AD #AD723F #7AAD3F

monochromatic

#1E2053 #2F3280 #3F43AD #6367C6 #9092D7

Accessibility & contrast

On white

8.02

#3F43AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#3F43AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F43AD

8.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F43AD	#FFFFFF	#000000	##FFFFFF
##3F43AD	1.00	8.02	2.62	8.02
#FFFFFF	8.02	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B0

Deuteranopia (green-blind)

#004CAB

Tritanopia (blue-blind)

#005D71

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #3f43ad;
/* rgb */ color: rgb(63, 67, 173);
/* oklch */ color: oklch(44.5% 0.166 275.7);

Tailwind

colors: {
  custom: {
    50: '#8077c6',
    500: '#3f43ad',
    950: '#000000',
  },
}

SCSS

$custom: #3f43ad;
$custom-light: #8077c6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f43ad",
  "rgb": {
    "r": 63,
    "g": 67,
    "b": 173
  },
  "hsl": {
    "h": 237.818,
    "s": 46.61,
    "l": 46.275
  },
  "oklch": {
    "l": 0.44527,
    "c": 0.16582,
    "h": 275.7
  },
  "luminance": 0.08088
}

Semantic roles & 50–950 ramp

primary

#3F43AD

secondary

#C2BF86

accent

#D152D6

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #3F43AD

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

Preview Lab → · Contrast checker → · Palette generator →