#2F31AA#2F31AA

#2F31AA is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.2% C 0.187 H 273.4°. Best body text is #FFFFFF at 9.81:1 contrast (WCAG AA passes).

Color values

HEX	#2F31AA
RGB	rgb(47, 49, 170)
HSL	hsl(239, 57%, 43%)
HSV	hsv(239, 72%, 67%)
CMYK	cmyk(72.4%, 71.2%, 0%, 33.3%)
CIE-LAB	lab(28.65, 39.78, -64.59)
CIE-LCH	lch(28.65, 75.86, 301.63°)
OKLab	oklab(40.16% 0.011 -0.1868)
OKLCH	oklch(40.16% 0.187 273.4)
XYZ	xyz(9.5239, 5.7023, 38.6212)
Luminance	0.0570 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.57

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F31AA #AAA82F

analogous

#2F6FAA #2F31AA #6A2FAA

triadic

#2F31AA #AA2F31 #31AA2F

tetradic

#2F31AA #AA2F6F #AAA82F #2FAA6A

square

#2F31AA #AA2F6F #AAA82F #2FAA6A

split-complementary

#2F31AA #AA6A2F #6FAA2F

monochromatic

#14154A #22237A #2F31AA #494CCD #797BDA

Accessibility & contrast

On white

9.81

#2F31AA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#2F31AA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31AA

9.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31AA	#FFFFFF	#000000	##FFFFFF
##2F31AA	1.00	9.81	2.14	9.81
#FFFFFF	9.81	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049AE

Deuteranopia (green-blind)

#003EA8

Tritanopia (blue-blind)

#00536A

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2f31aa;
/* rgb */ color: rgb(47, 49, 170);
/* oklch */ color: oklch(40.2% 0.187 273.4);

Tailwind

colors: {
  custom: {
    50: '#7a6ac4',
    500: '#2f31aa',
    950: '#000000',
  },
}

SCSS

$custom: #2f31aa;
$custom-light: #7a6ac4;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31aa",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 170
  },
  "hsl": {
    "h": 239.024,
    "s": 56.682,
    "l": 42.549
  },
  "oklch": {
    "l": 0.40156,
    "c": 0.18712,
    "h": 273.4
  },
  "luminance": 0.05703
}

Semantic roles & 50–950 ramp

primary

#2F31AA

secondary

#C2C172

accent

#DD48E0

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2F31AA

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

Preview Lab → · Contrast checker → · Palette generator →