#3F31AD#3F31AD

#3F31AD is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.6% C 0.187 H 279.5°. Best body text is #FFFFFF at 9.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F31AD
RGB	rgb(63, 49, 173)
HSL	hsl(247, 56%, 44%)
HSV	hsv(247, 72%, 68%)
CMYK	cmyk(63.6%, 71.7%, 0%, 32.2%)
CIE-LAB	lab(30.08, 42.71, -63.99)
CIE-LCH	lch(30.08, 76.94, 303.72°)
OKLab	oklab(41.57% 0.031 -0.1846)
OKLCH	oklch(41.57% 0.187 279.5)
XYZ	xyz(10.6886, 6.2697, 40.1740)
Luminance	0.0627 (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

#3F31AD #9FAD31

analogous

#3161AD #3F31AD #7D31AD

triadic

#3F31AD #AD3F31 #31AD3F

tetradic

#3F31AD #AD3161 #9FAD31 #31AD7D

square

#3F31AD #AD3161 #9FAD31 #31AD7D

split-complementary

#3F31AD #AD7D31 #61AD31

monochromatic

#1C164E #2E237D #3F31AD #5D4ECD #887EDA

Accessibility & contrast

On white

9.32

#3F31AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#3F31AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F31AD

9.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F31AD	#FFFFFF	#000000	##FFFFFF
##3F31AD	1.00	9.32	2.25	9.32
#FFFFFF	9.32	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB1

Deuteranopia (green-blind)

#0042AB

Tritanopia (blue-blind)

#00536B

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3f31ad;
/* rgb */ color: rgb(63, 49, 173);
/* oklch */ color: oklch(41.6% 0.187 279.5);

Tailwind

colors: {
  custom: {
    50: '#826bc7',
    500: '#3f31ad',
    950: '#000000',
  },
}

SCSS

$custom: #3f31ad;
$custom-light: #826bc7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f31ad",
  "rgb": {
    "r": 63,
    "g": 49,
    "b": 173
  },
  "hsl": {
    "h": 246.774,
    "s": 55.856,
    "l": 43.529
  },
  "oklch": {
    "l": 0.41566,
    "c": 0.18721,
    "h": 279.5
  },
  "luminance": 0.06271
}

Semantic roles & 50–950 ramp

primary

#3F31AD

secondary

#BBC377

accent

#DF49CE

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F31AD

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

Preview Lab → · Contrast checker → · Palette generator →