#2F31A3#2F31A3

#2F31A3 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.5% C 0.178 H 273.9°. Best body text is #FFFFFF at 10.05:1 contrast (WCAG AA passes).

Color values

HEX	#2F31A3
RGB	rgb(47, 49, 163)
HSL	hsl(239, 55%, 41%)
HSV	hsv(239, 71%, 64%)
CMYK	cmyk(71.2%, 69.9%, 0%, 36.1%)
CIE-LAB	lab(27.97, 37.37, -61.50)
CIE-LCH	lch(27.97, 71.96, 301.28°)
OKLab	oklab(39.46% 0.012 -0.1778)
OKLCH	oklch(39.46% 0.178 273.9)
XYZ	xyz(8.8793, 5.4445, 35.2262)
Luminance	0.0544 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F31A3 #A3A12F

analogous

#2F6BA3 #2F31A3 #672FA3

triadic

#2F31A3 #A32F31 #31A32F

tetradic

#2F31A3 #A32F6B #A3A12F #2FA367

square

#2F31A3 #A32F6B #A3A12F #2FA367

split-complementary

#2F31A3 #A3672F #6BA32F

monochromatic

#141444 #212373 #2F31A3 #4648CA #7577D7

Accessibility & contrast

On white

10.05

#2F31A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.09

#2F31A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31A3

10.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31A3	#FFFFFF	#000000	##FFFFFF
##2F31A3	1.00	10.05	2.09	10.05
#FFFFFF	10.05	1.00	21.00	1.00
#000000	2.09	21.00	1.00	21.00
##FFFFFF	10.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A6

Deuteranopia (green-blind)

#003DA1

Tritanopia (blue-blind)

#005066

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2f31a3;
/* rgb */ color: rgb(47, 49, 163);
/* oklch */ color: oklch(39.5% 0.178 273.9);

Tailwind

colors: {
  custom: {
    50: '#796abf',
    500: '#2f31a3',
    950: '#000000',
  },
}

SCSS

$custom: #2f31a3;
$custom-light: #796abf;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31a3",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 163
  },
  "hsl": {
    "h": 238.966,
    "s": 55.238,
    "l": 41.176
  },
  "oklch": {
    "l": 0.39458,
    "c": 0.17816,
    "h": 273.9
  },
  "luminance": 0.05445
}

Semantic roles & 50–950 ramp

primary

#2F31A3

secondary

#BFBE6F

accent

#DC49DF

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2F31A3

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

Preview Lab → · Contrast checker → · Palette generator →