#2F37B2#2F37B2

#2F37B2 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.9% C 0.191 H 272.0°. Best body text is #FFFFFF at 9.09:1 contrast (WCAG AA passes).

Color values

HEX	#2F37B2
RGB	rgb(47, 55, 178)
HSL	hsl(236, 58%, 44%)
HSV	hsv(236, 74%, 70%)
CMYK	cmyk(73.6%, 69.1%, 0%, 30.2%)
CIE-LAB	lab(30.76, 38.91, -65.91)
CIE-LCH	lch(30.76, 76.53, 300.55°)
OKLab	oklab(41.91% 0.0065 -0.1906)
OKLCH	oklch(41.91% 0.191 272)
XYZ	xyz(10.5716, 6.5500, 42.8180)
Luminance	0.0655 (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

#2F37B2 #B2AA2F

analogous

#2F79B2 #2F37B2 #692FB2

triadic

#2F37B2 #B22F37 #37B22F

tetradic

#2F37B2 #B22F79 #B2AA2F #2FB269

square

#2F37B2 #B22F79 #B2AA2F #2FB269

split-complementary

#2F37B2 #B2692F #79B22F

monochromatic

#151951 #222882 #2F37B2 #4E56D0 #7E84DD

Accessibility & contrast

On white

9.09

#2F37B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#2F37B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F37B2

9.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F37B2	#FFFFFF	#000000	##FFFFFF
##2F37B2	1.00	9.09	2.31	9.09
#FFFFFF	9.09	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004FB6

Deuteranopia (green-blind)

#0042B0

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #2f37b2;
/* rgb */ color: rgb(47, 55, 178);
/* oklch */ color: oklch(41.9% 0.191 272.0);

Tailwind

colors: {
  custom: {
    50: '#7c6eca',
    500: '#2f37b2',
    950: '#000000',
  },
}

SCSS

$custom: #2f37b2;
$custom-light: #7c6eca;
$custom-dark: #000000;

JSON

{
  "hex": "#2f37b2",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 178
  },
  "hsl": {
    "h": 236.336,
    "s": 58.222,
    "l": 44.118
  },
  "oklch": {
    "l": 0.41912,
    "c": 0.19075,
    "h": 272
  },
  "luminance": 0.06551
}

Semantic roles & 50–950 ramp

primary

#2F37B2

secondary

#C6C177

accent

#D846E1

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #2F37B2

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

Preview Lab → · Contrast checker → · Palette generator →