#2F31B1#2F31B1

#2F31B1 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.9% C 0.196 H 272.9°. Best body text is #FFFFFF at 9.57:1 contrast (WCAG AA passes).

Color values

HEX	#2F31B1
RGB	rgb(47, 49, 177)
HSL	hsl(239, 58%, 44%)
HSV	hsv(239, 73%, 69%)
CMYK	cmyk(73.4%, 72.3%, 0%, 30.6%)
CIE-LAB	lab(29.35, 42.17, -67.64)
CIE-LCH	lch(29.35, 79.71, 301.94°)
OKLab	oklab(40.87% 0.0099 -0.1957)
OKLCH	oklch(40.87% 0.196 272.9)
XYZ	xyz(10.2038, 5.9742, 42.2018)
Luminance	0.0597 (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

#2F31B1 #B1AF2F

analogous

#2F72B1 #2F31B1 #6E2FB1

triadic

#2F31B1 #B12F31 #31B12F

tetradic

#2F31B1 #B12F72 #B1AF2F #2FB16E

square

#2F31B1 #B12F72 #B1AF2F #2FB16E

split-complementary

#2F31B1 #B16E2F #72B12F

monochromatic

#151650 #222481 #2F31B1 #4D4FD0 #7E7FDD

Accessibility & contrast

On white

9.57

#2F31B1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#2F31B1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31B1

9.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31B1	#FFFFFF	#000000	##FFFFFF
##2F31B1	1.00	9.57	2.19	9.57
#FFFFFF	9.57	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BB5

Deuteranopia (green-blind)

#003FAF

Tritanopia (blue-blind)

#00556E

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2f31b1;
/* rgb */ color: rgb(47, 49, 177);
/* oklch */ color: oklch(40.9% 0.196 272.9);

Tailwind

colors: {
  custom: {
    50: '#7c6aca',
    500: '#2f31b1',
    950: '#000000',
  },
}

SCSS

$custom: #2f31b1;
$custom-light: #7c6aca;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31b1",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 177
  },
  "hsl": {
    "h": 239.077,
    "s": 58.036,
    "l": 43.922
  },
  "oklch": {
    "l": 0.40867,
    "c": 0.19593,
    "h": 272.9
  },
  "luminance": 0.05975
}

Semantic roles & 50–950 ramp

primary

#2F31B1

secondary

#C5C476

accent

#DF47E1

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2F31B1

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

Preview Lab → · Contrast checker → · Palette generator →