#2F31A1#2F31A1

#2F31A1 is a dark, vivid blue. Relative luminance 0.054; OKLCH L 39.3% C 0.176 H 274.0°. Best body text is #FFFFFF at 10.12:1 contrast (WCAG AA passes).

Color values

HEX	#2F31A1
RGB	rgb(47, 49, 161)
HSL	hsl(239, 55%, 41%)
HSV	hsv(239, 71%, 63%)
CMYK	cmyk(70.8%, 69.6%, 0%, 36.9%)
CIE-LAB	lab(27.77, 36.67, -60.60)
CIE-LCH	lch(27.77, 70.83, 301.18°)
OKLab	oklab(39.26% 0.0123 -0.1751)
OKLCH	oklch(39.26% 0.176 274)
XYZ	xyz(8.7015, 5.3733, 34.2899)
Luminance	0.0537 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F31A1 #A19F2F

analogous

#2F6AA1 #2F31A1 #662FA1

triadic

#2F31A1 #A12F31 #31A12F

tetradic

#2F31A1 #A12F6A #A19F2F #2FA166

square

#2F31A1 #A12F6A #A19F2F #2FA166

split-complementary

#2F31A1 #A1662F #6AA12F

monochromatic

#131442 #212372 #2F31A1 #4547C9 #7476D6

Accessibility & contrast

On white

10.12

#2F31A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.07

#2F31A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31A1

10.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31A1	#FFFFFF	#000000	##FFFFFF
##2F31A1	1.00	10.12	2.07	10.12
#FFFFFF	10.12	1.00	21.00	1.00
#000000	2.07	21.00	1.00	21.00
##FFFFFF	10.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0047A4

Deuteranopia (green-blind)

#003C9F

Tritanopia (blue-blind)

#004F65

Achromatopsia (no color)

#424242

Design tokens & code

CSS

--color: #2f31a1;
/* rgb */ color: rgb(47, 49, 161);
/* oklch */ color: oklch(39.3% 0.176 274.0);

Tailwind

colors: {
  custom: {
    50: '#786abe',
    500: '#2f31a1',
    950: '#000000',
  },
}

SCSS

$custom: #2f31a1;
$custom-light: #786abe;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31a1",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 161
  },
  "hsl": {
    "h": 238.947,
    "s": 54.808,
    "l": 40.784
  },
  "oklch": {
    "l": 0.39261,
    "c": 0.17557,
    "h": 274
  },
  "luminance": 0.05374
}

Semantic roles & 50–950 ramp

primary

#2F31A1

secondary

#BEBD6E

accent

#DC4ADE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0612

muted

#7C7A81

Preview Lab

Preview with #2F31A1

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

Preview Lab → · Contrast checker → · Palette generator →