#3F31AE#3F31AE

#3F31AE is a dark, vivid blue. Relative luminance 0.063; OKLCH L 41.7% C 0.188 H 279.4°. Best body text is #FFFFFF at 9.28:1 contrast (WCAG AA passes).

Color values

HEX	#3F31AE
RGB	rgb(63, 49, 174)
HSL	hsl(247, 56%, 44%)
HSV	hsv(247, 72%, 68%)
CMYK	cmyk(63.8%, 71.8%, 0%, 31.8%)
CIE-LAB	lab(30.18, 43.03, -64.44)
CIE-LCH	lch(30.18, 77.48, 303.73°)
OKLab	oklab(41.66% 0.0308 -0.1859)
OKLCH	oklch(41.66% 0.188 279.4)
XYZ	xyz(10.7858, 6.3085, 40.6855)
Luminance	0.0631 (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

#3F31AE #A0AE31

analogous

#3161AE #3F31AE #7D31AE

triadic

#3F31AE #AE3F31 #31AE3F

tetradic

#3F31AE #AE3161 #A0AE31 #31AE7D

square

#3F31AE #AE3161 #A0AE31 #31AE7D

split-complementary

#3F31AE #AE7D31 #61AE31

monochromatic

#1C164E #2E247E #3F31AE #5D4FCD #897FDB

Accessibility & contrast

On white

9.28

#3F31AE on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#3F31AE on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3F31AE

9.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F31AE	#FFFFFF	#000000	##FFFFFF
##3F31AE	1.00	9.28	2.26	9.28
#FFFFFF	9.28	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB2

Deuteranopia (green-blind)

#0042AC

Tritanopia (blue-blind)

#00536C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3f31ae;
/* rgb */ color: rgb(63, 49, 174);
/* oklch */ color: oklch(41.7% 0.188 279.4);

Tailwind

colors: {
  custom: {
    50: '#826bc7',
    500: '#3f31ae',
    950: '#000000',
  },
}

SCSS

$custom: #3f31ae;
$custom-light: #826bc7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f31ae",
  "rgb": {
    "r": 63,
    "g": 49,
    "b": 174
  },
  "hsl": {
    "h": 246.72,
    "s": 56.054,
    "l": 43.725
  },
  "oklch": {
    "l": 0.41663,
    "c": 0.18845,
    "h": 279.4
  },
  "luminance": 0.06309
}

Semantic roles & 50–950 ramp

primary

#3F31AE

secondary

#BBC477

accent

#DF48CE

background

#F8F6FC

surface

#F0EBF8

border

#CBC6D1

text

#0C0713

muted

#7D7A82

Preview Lab

Preview with #3F31AE

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

Preview Lab → · Contrast checker → · Palette generator →