#2F31B3#2F31B3

#2F31B3 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 41.1% C 0.198 H 272.8°. Best body text is #FFFFFF at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#2F31B3
RGB	rgb(47, 49, 179)
HSL	hsl(239, 58%, 44%)
HSV	hsv(239, 74%, 70%)
CMYK	cmyk(73.7%, 72.6%, 0%, 29.8%)
CIE-LAB	lab(29.55, 42.85, -68.50)
CIE-LCH	lch(29.55, 80.79, 302.03°)
OKLab	oklab(41.07% 0.0096 -0.1982)
OKLCH	oklch(41.07% 0.198 272.8)
XYZ	xyz(10.4046, 6.0546, 43.2594)
Luminance	0.0606 (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

#2F31B3 #B3B12F

analogous

#2F73B3 #2F31B3 #6F2FB3

triadic

#2F31B3 #B32F31 #31B32F

tetradic

#2F31B3 #B32F73 #B3B12F #2FB36F

square

#2F31B3 #B32F73 #B3B12F #2FB36F

split-complementary

#2F31B3 #B36F2F #73B32F

monochromatic

#161652 #222483 #2F31B3 #4F51D1 #7F80DD

Accessibility & contrast

On white

9.50

#2F31B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#2F31B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31B3

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31B3	#FFFFFF	#000000	##FFFFFF
##2F31B3	1.00	9.50	2.21	9.50
#FFFFFF	9.50	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB7

Deuteranopia (green-blind)

#003FB1

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2f31b3;
/* rgb */ color: rgb(47, 49, 179);
/* oklch */ color: oklch(41.1% 0.198 272.8);

Tailwind

colors: {
  custom: {
    50: '#7c6acb',
    500: '#2f31b3',
    950: '#000000',
  },
}

SCSS

$custom: #2f31b3;
$custom-light: #7c6acb;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31b3",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 179
  },
  "hsl": {
    "h": 239.091,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.41072,
    "c": 0.19841,
    "h": 272.8
  },
  "luminance": 0.06056
}

Semantic roles & 50–950 ramp

primary

#2F31B3

secondary

#C6C578

accent

#DF46E2

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0613

muted

#7C7A82

Preview Lab

Preview with #2F31B3

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

Preview Lab → · Contrast checker → · Palette generator →