#2F31BB#2F31BB

#2F31BB is a dark, highly saturated blue. Relative luminance 0.064; OKLCH L 41.9% C 0.208 H 272.3°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#2F31BB
RGB	rgb(47, 49, 187)
HSL	hsl(239, 60%, 46%)
HSV	hsv(239, 75%, 73%)
CMYK	cmyk(74.9%, 73.8%, 0%, 26.7%)
CIE-LAB	lab(30.37, 45.53, -71.89)
CIE-LCH	lch(30.37, 85.10, 302.35°)
OKLab	oklab(41.9% 0.0083 -0.2081)
OKLCH	oklch(41.9% 0.208 272.3)
XYZ	xyz(11.2372, 6.3876, 47.6448)
Luminance	0.0639 (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

#2F31BB #BBB92F

analogous

#2F77BB #2F31BB #732FBB

triadic

#2F31BB #BB2F31 #31BB2F

tetradic

#2F31BB #BB2F77 #BBB92F #2FBB73

square

#2F31BB #BB2F77 #BBB92F #2FBB73

split-complementary

#2F31BB #BB732F #77BB2F

monochromatic

#161759 #23248A #2F31BB #5355D4 #8486E0

Accessibility & contrast

On white

9.22

#2F31BB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#2F31BB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31BB

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31BB	#FFFFFF	#000000	##FFFFFF
##2F31BB	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBF

Deuteranopia (green-blind)

#0041B9

Tritanopia (blue-blind)

#005973

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2f31bb;
/* rgb */ color: rgb(47, 49, 187);
/* oklch */ color: oklch(41.9% 0.208 272.3);

Tailwind

colors: {
  custom: {
    50: '#7e6bd1',
    500: '#2f31bb',
    950: '#000000',
  },
}

SCSS

$custom: #2f31bb;
$custom-light: #7e6bd1;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31bb",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 187
  },
  "hsl": {
    "h": 239.143,
    "s": 59.829,
    "l": 45.882
  },
  "oklch": {
    "l": 0.41901,
    "c": 0.20823,
    "h": 272.3
  },
  "luminance": 0.06389
}

Semantic roles & 50–950 ramp

primary

#2F31BB

secondary

#C9C87C

accent

#E145E3

background

#F8F6FD

surface

#F0EBFA

border

#CBC6D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #2F31BB

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

Preview Lab → · Contrast checker → · Palette generator →