#2F31B5#2F31B5

#2F31B5 is a dark, highly saturated blue. Relative luminance 0.061; OKLCH L 41.3% C 0.201 H 272.7°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#2F31B5
RGB	rgb(47, 49, 181)
HSL	hsl(239, 59%, 45%)
HSV	hsv(239, 74%, 71%)
CMYK	cmyk(74%, 72.9%, 0%, 29%)
CIE-LAB	lab(29.75, 43.52, -69.35)
CIE-LCH	lch(29.75, 81.88, 302.11°)
OKLab	oklab(41.28% 0.0093 -0.2007)
OKLCH	oklch(41.28% 0.201 272.7)
XYZ	xyz(10.6083, 6.1361, 44.3324)
Luminance	0.0614 (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

#2F31B5 #B5B32F

analogous

#2F74B5 #2F31B5 #702FB5

triadic

#2F31B5 #B52F31 #31B52F

tetradic

#2F31B5 #B52F74 #B5B32F #2FB570

square

#2F31B5 #B52F74 #B5B32F #2FB570

split-complementary

#2F31B5 #B5702F #74B52F

monochromatic

#161754 #222484 #2F31B5 #5052D1 #8082DE

Accessibility & contrast

On white

9.43

#2F31B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#2F31B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F31B5

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F31B5	#FFFFFF	#000000	##FFFFFF
##2F31B5	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB9

Deuteranopia (green-blind)

#0040B3

Tritanopia (blue-blind)

#005770

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2f31b5;
/* rgb */ color: rgb(47, 49, 181);
/* oklch */ color: oklch(41.3% 0.201 272.7);

Tailwind

colors: {
  custom: {
    50: '#7d6acc',
    500: '#2f31b5',
    950: '#000000',
  },
}

SCSS

$custom: #2f31b5;
$custom-light: #7d6acc;
$custom-dark: #000000;

JSON

{
  "hex": "#2f31b5",
  "rgb": {
    "r": 47,
    "g": 49,
    "b": 181
  },
  "hsl": {
    "h": 239.104,
    "s": 58.772,
    "l": 44.706
  },
  "oklch": {
    "l": 0.41278,
    "c": 0.20089,
    "h": 272.7
  },
  "luminance": 0.06137
}

Semantic roles & 50–950 ramp

primary

#2F31B5

secondary

#C7C679

accent

#E046E2

background

#F8F6FC

surface

#EFEBF9

border

#CAC6D2

text

#0B0614

muted

#7C7A82

Preview Lab

Preview with #2F31B5

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

Preview Lab → · Contrast checker → · Palette generator →