#2F31B7#2F31B7

#2F31B7 is a dark, highly saturated blue. Relative luminance 0.062; OKLCH L 41.5% C 0.203 H 272.5°. Best body text is #FFFFFF at 9.36:1 contrast (WCAG AA passes).

Color values

HEX	#2F31B7
RGB	rgb(47, 49, 183)
HSL	hsl(239, 59%, 45%)
HSV	hsv(239, 74%, 72%)
CMYK	cmyk(74.3%, 73.2%, 0%, 28.2%)
CIE-LAB	lab(29.96, 44.20, -70.20)
CIE-LCH	lch(29.96, 82.95, 302.19°)
OKLab	oklab(41.49% 0.009 -0.2031)
OKLCH	oklch(41.49% 0.203 272.5)
XYZ	xyz(10.8150, 6.2187, 45.4209)
Luminance	0.0622 (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

#2F31B7 #B7B52F

analogous

#2F75B7 #2F31B7 #712FB7

triadic

#2F31B7 #B72F31 #31B72F

tetradic

#2F31B7 #B72F75 #B7B52F #2FB771

square

#2F31B7 #B72F75 #B7B52F #2FB771

split-complementary

#2F31B7 #B7712F #75B72F

monochromatic

#161756 #222486 #2F31B7 #5153D2 #8283DF

Accessibility & contrast

On white

9.36

#2F31B7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#2F31B7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31B7

9.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31B7	#FFFFFF	#000000	##FFFFFF
##2F31B7	1.00	9.36	2.24	9.36
#FFFFFF	9.36	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DBB

Deuteranopia (green-blind)

#0040B5

Tritanopia (blue-blind)

#005771

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #2f31b7;
/* rgb */ color: rgb(47, 49, 183);
/* oklch */ color: oklch(41.5% 0.203 272.5);

Tailwind

colors: {
  custom: {
    50: '#7d6bce',
    500: '#2f31b7',
    950: '#000000',
  },
}

SCSS

$custom: #2f31b7;
$custom-light: #7d6bce;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31b7",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 183
  },
  "hsl": {
    "h": 239.118,
    "s": 59.13,
    "l": 45.098
  },
  "oklch": {
    "l": 0.41485,
    "c": 0.20335,
    "h": 272.5
  },
  "luminance": 0.0622
}

Semantic roles & 50–950 ramp

primary

#2F31B7

secondary

#C8C77A

accent

#E045E2

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #2F31B7

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

Preview Lab → · Contrast checker → · Palette generator →