#2F31A6#2F31A6

#2F31A6 is a dark, vivid blue. Relative luminance 0.056; OKLCH L 39.8% C 0.182 H 273.6°. Best body text is #FFFFFF at 9.95:1 contrast (WCAG AA passes).

Color values

HEX	#2F31A6
RGB	rgb(47, 49, 166)
HSL	hsl(239, 56%, 42%)
HSV	hsv(239, 72%, 65%)
CMYK	cmyk(71.7%, 70.5%, 0%, 34.9%)
CIE-LAB	lab(28.26, 38.41, -62.83)
CIE-LCH	lch(28.26, 73.64, 301.44°)
OKLab	oklab(39.76% 0.0116 -0.1817)
OKLCH	oklch(39.76% 0.182 273.6)
XYZ	xyz(9.1512, 5.5532, 36.6586)
Luminance	0.0555 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F31A6 #A6A42F

analogous

#2F6CA6 #2F31A6 #692FA6

triadic

#2F31A6 #A62F31 #31A62F

tetradic

#2F31A6 #A62F6C #A6A42F #2FA669

square

#2F31A6 #A62F6C #A6A42F #2FA669

split-complementary

#2F31A6 #A6692F #6CA62F

monochromatic

#141547 #212376 #2F31A6 #4749CB #7779D8

Accessibility & contrast

On white

9.95

#2F31A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.11

#2F31A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31A6

9.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31A6	#FFFFFF	#000000	##FFFFFF
##2F31A6	1.00	9.95	2.11	9.95
#FFFFFF	9.95	1.00	21.00	1.00
#000000	2.11	21.00	1.00	21.00
##FFFFFF	9.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0048AA

Deuteranopia (green-blind)

#003DA4

Tritanopia (blue-blind)

#005168

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2f31a6;
/* rgb */ color: rgb(47, 49, 166);
/* oklch */ color: oklch(39.8% 0.182 273.6);

Tailwind

colors: {
  custom: {
    50: '#796ac2',
    500: '#2f31a6',
    950: '#000000',
  },
}

SCSS

$custom: #2f31a6;
$custom-light: #796ac2;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31a6",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 166
  },
  "hsl": {
    "h": 238.992,
    "s": 55.869,
    "l": 41.765
  },
  "oklch": {
    "l": 0.39755,
    "c": 0.18203,
    "h": 273.6
  },
  "luminance": 0.05554
}

Semantic roles & 50–950 ramp

primary

#2F31A6

secondary

#C1BF70

accent

#DD49DF

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2F31A6

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

Preview Lab → · Contrast checker → · Palette generator →