#2F31A4#2F31A4

#2F31A4 is a dark, vivid blue. Relative luminance 0.055; OKLCH L 39.6% C 0.179 H 273.8°. Best body text is #FFFFFF at 10.02:1 contrast (WCAG AA passes).

Color values

HEX	#2F31A4
RGB	rgb(47, 49, 164)
HSL	hsl(239, 55%, 41%)
HSV	hsv(239, 71%, 64%)
CMYK	cmyk(71.3%, 70.1%, 0%, 35.7%)
CIE-LAB	lab(28.06, 37.71, -61.94)
CIE-LCH	lch(28.06, 72.52, 301.34°)
OKLab	oklab(39.56% 0.0119 -0.1791)
OKLCH	oklch(39.56% 0.179 273.8)
XYZ	xyz(8.9692, 5.4804, 35.6999)
Luminance	0.0548 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F31A4 #A4A22F

analogous

#2F6CA4 #2F31A4 #682FA4

triadic

#2F31A4 #A42F31 #31A42F

tetradic

#2F31A4 #A42F6C #A4A22F #2FA468

square

#2F31A4 #A42F6C #A4A22F #2FA468

split-complementary

#2F31A4 #A4682F #6CA42F

monochromatic

#141545 #212374 #2F31A4 #4648CA #7677D8

Accessibility & contrast

On white

10.02

#2F31A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.10

#2F31A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31A4

10.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31A4	#FFFFFF	#000000	##FFFFFF
##2F31A4	1.00	10.02	2.10	10.02
#FFFFFF	10.02	1.00	21.00	1.00
#000000	2.10	21.00	1.00	21.00
##FFFFFF	10.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048A7

Deuteranopia (green-blind)

#003DA2

Tritanopia (blue-blind)

#005066

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2f31a4;
/* rgb */ color: rgb(47, 49, 164);
/* oklch */ color: oklch(39.6% 0.179 273.8);

Tailwind

colors: {
  custom: {
    50: '#796ac0',
    500: '#2f31a4',
    950: '#000000',
  },
}

SCSS

$custom: #2f31a4;
$custom-light: #796ac0;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31a4",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 164
  },
  "hsl": {
    "h": 238.974,
    "s": 55.45,
    "l": 41.373
  },
  "oklch": {
    "l": 0.39557,
    "c": 0.17945,
    "h": 273.8
  },
  "luminance": 0.05481
}

Semantic roles & 50–950 ramp

primary

#2F31A4

secondary

#C0BE6F

accent

#DC49DF

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2F31A4

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

Preview Lab → · Contrast checker → · Palette generator →