#2F31B9#2F31B9

#2F31B9 is a dark, highly saturated blue. Relative luminance 0.063; OKLCH L 41.7% C 0.206 H 272.4°. Best body text is #FFFFFF at 9.29:1 contrast (WCAG AA passes).

Color values

HEX	#2F31B9
RGB	rgb(47, 49, 185)
HSL	hsl(239, 59%, 45%)
HSV	hsv(239, 75%, 73%)
CMYK	cmyk(74.6%, 73.5%, 0%, 27.5%)
CIE-LAB	lab(30.16, 44.86, -71.05)
CIE-LCH	lch(30.16, 84.03, 302.27°)
OKLab	oklab(41.69% 0.0086 -0.2056)
OKLCH	oklch(41.69% 0.206 272.4)
XYZ	xyz(11.0246, 6.3026, 46.5250)
Luminance	0.0630 (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

#2F31B9 #B9B72F

analogous

#2F76B9 #2F31B9 #722FB9

triadic

#2F31B9 #B92F31 #31B92F

tetradic

#2F31B9 #B92F76 #B9B72F #2FB972

square

#2F31B9 #B92F76 #B9B72F #2FB972

split-complementary

#2F31B9 #B9722F #76B92F

monochromatic

#161757 #232488 #2F31B9 #5254D3 #8384DF

Accessibility & contrast

On white

9.29

#2F31B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.26

#2F31B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31B9

9.29:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31B9	#FFFFFF	#000000	##FFFFFF
##2F31B9	1.00	9.29	2.26	9.29
#FFFFFF	9.29	1.00	21.00	1.00
#000000	2.26	21.00	1.00	21.00
##FFFFFF	9.29	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EBD

Deuteranopia (green-blind)

#0040B7

Tritanopia (blue-blind)

#005872

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2f31b9;
/* rgb */ color: rgb(47, 49, 185);
/* oklch */ color: oklch(41.7% 0.206 272.4);

Tailwind

colors: {
  custom: {
    50: '#7e6bcf',
    500: '#2f31b9',
    950: '#000000',
  },
}

SCSS

$custom: #2f31b9;
$custom-light: #7e6bcf;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31b9",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 185
  },
  "hsl": {
    "h": 239.13,
    "s": 59.483,
    "l": 45.49
  },
  "oklch": {
    "l": 0.41693,
    "c": 0.20579,
    "h": 272.4
  },
  "luminance": 0.06304
}

Semantic roles & 50–950 ramp

primary

#2F31B9

secondary

#C9C87B

accent

#E045E3

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0714

muted

#7D7A82

Preview Lab

Preview with #2F31B9

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

Preview Lab → · Contrast checker → · Palette generator →