#2F37B5#2F37B5

#2F37B5 is a dark, vivid blue. Relative luminance 0.067; OKLCH L 42.2% C 0.195 H 271.8°. Best body text is #FFFFFF at 9.00:1 contrast (WCAG AA passes).

Color values

HEX	#2F37B5
RGB	rgb(47, 55, 181)
HSL	hsl(236, 59%, 45%)
HSV	hsv(236, 74%, 71%)
CMYK	cmyk(74%, 69.6%, 0%, 29%)
CIE-LAB	lab(31.05, 39.95, -67.22)
CIE-LCH	lch(31.05, 78.19, 300.73°)
OKLab	oklab(42.21% 0.0062 -0.1945)
OKLCH	oklch(42.21% 0.195 271.8)
XYZ	xyz(10.8761, 6.6718, 44.4217)
Luminance	0.0667 (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

#2F37B5 #B5AD2F

analogous

#2F7AB5 #2F37B5 #6A2FB5

triadic

#2F37B5 #B52F37 #37B52F

tetradic

#2F37B5 #B52F7A #B5AD2F #2FB56A

square

#2F37B5 #B52F7A #B5AD2F #2FB56A

split-complementary

#2F37B5 #B56A2F #7AB52F

monochromatic

#161954 #222884 #2F37B5 #5057D1 #8086DE

Accessibility & contrast

On white

9.00

#2F37B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.33

#2F37B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F37B5

9.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F37B5	#FFFFFF	#000000	##FFFFFF
##2F37B5	1.00	9.00	2.33	9.00
#FFFFFF	9.00	1.00	21.00	1.00
#000000	2.33	21.00	1.00	21.00
##FFFFFF	9.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB9

Deuteranopia (green-blind)

#0043B3

Tritanopia (blue-blind)

#005A72

Achromatopsia (no color)

#494949

Design tokens & code

CSS

--color: #2f37b5;
/* rgb */ color: rgb(47, 55, 181);
/* oklch */ color: oklch(42.2% 0.195 271.8);

Tailwind

colors: {
  custom: {
    50: '#7c6ecc',
    500: '#2f37b5',
    950: '#000000',
  },
}

SCSS

$custom: #2f37b5;
$custom-light: #7c6ecc;
$custom-dark: #000000;

JSON

{
  "hex": "#2f37b5",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 181
  },
  "hsl": {
    "h": 236.418,
    "s": 58.772,
    "l": 44.706
  },
  "oklch": {
    "l": 0.42207,
    "c": 0.19457,
    "h": 271.8
  },
  "luminance": 0.06673
}

Semantic roles & 50–950 ramp

primary

#2F37B5

secondary

#C7C279

accent

#D946E2

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0714

muted

#7C7A82

Preview Lab

Preview with #2F37B5

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

Preview Lab → · Contrast checker → · Palette generator →