#2F31AD#2F31AD

#2F31AD is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.5% C 0.191 H 273.2°. Best body text is #FFFFFF at 9.71:1 contrast (WCAG AA passes).

Color values

HEX	#2F31AD
RGB	rgb(47, 49, 173)
HSL	hsl(239, 57%, 43%)
HSV	hsv(239, 73%, 68%)
CMYK	cmyk(72.8%, 71.7%, 0%, 32.2%)
CIE-LAB	lab(28.95, 40.81, -65.90)
CIE-LCH	lch(28.95, 77.52, 301.77°)
OKLab	oklab(40.46% 0.0106 -0.1906)
OKLCH	oklch(40.46% 0.191 273.2)
XYZ	xyz(9.8109, 5.8171, 40.1328)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F31AD #ADAB2F

analogous

#2F70AD #2F31AD #6C2FAD

triadic

#2F31AD #AD2F31 #31AD2F

tetradic

#2F31AD #AD2F70 #ADAB2F #2FAD6C

square

#2F31AD #AD2F70 #ADAB2F #2FAD6C

split-complementary

#2F31AD #AD6C2F #70AD2F

monochromatic

#15164D #22237D #2F31AD #4B4DCE #7B7DDB

Accessibility & contrast

On white

9.71

#2F31AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#2F31AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31AD

9.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31AD	#FFFFFF	#000000	##FFFFFF
##2F31AD	1.00	9.71	2.16	9.71
#FFFFFF	9.71	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AB1

Deuteranopia (green-blind)

#003EAB

Tritanopia (blue-blind)

#00546B

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #2f31ad;
/* rgb */ color: rgb(47, 49, 173);
/* oklch */ color: oklch(40.5% 0.191 273.2);

Tailwind

colors: {
  custom: {
    50: '#7b6ac7',
    500: '#2f31ad',
    950: '#000000',
  },
}

SCSS

$custom: #2f31ad;
$custom-light: #7b6ac7;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31ad",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 173
  },
  "hsl": {
    "h": 239.048,
    "s": 57.273,
    "l": 43.137
  },
  "oklch": {
    "l": 0.40459,
    "c": 0.19092,
    "h": 273.2
  },
  "luminance": 0.05818
}

Semantic roles & 50–950 ramp

primary

#2F31AD

secondary

#C4C274

accent

#DE47E1

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2F31AD

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

Preview Lab → · Contrast checker → · Palette generator →