#2F37CF#2F37CF

#2F37CF is a dark, highly saturated blue. Relative luminance 0.078; OKLCH L 44.8% C 0.226 H 270.7°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#2F37CF
RGB	rgb(47, 55, 207)
HSL	hsl(237, 63%, 50%)
HSV	hsv(237, 77%, 81%)
CMYK	cmyk(77.3%, 73.4%, 0%, 18.8%)
CIE-LAB	lab(33.65, 48.78, -78.19)
CIE-LCH	lch(33.65, 92.16, 301.96°)
OKLab	oklab(44.85% 0.0026 -0.2264)
OKLCH	oklch(44.85% 0.226 270.7)
XYZ	xyz(13.7971, 7.8402, 59.8055)
Luminance	0.0784 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue Blue

#2242C7

ΔE00 3.56

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F37CF #CFC72F

analogous

#2F87CF #2F37CF #772FCF

triadic

#2F37CF #CF2F37 #37CF2F

tetradic

#2F37CF #CF2F87 #CFC72F #2FCF77

square

#2F37CF #CF2F87 #CFC72F #2FCF77

split-complementary

#2F37CF #CF772F #87CF2F

monochromatic

#181C6B #242A9D #2F37CF #6066DB #9296E6

Accessibility & contrast

On white

8.18

#2F37CF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#2F37CF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F37CF

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F37CF	#FFFFFF	#000000	##FFFFFF
##2F37CF	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057D3

Deuteranopia (green-blind)

#0047CC

Tritanopia (blue-blind)

#006380

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2f37cf;
/* rgb */ color: rgb(47, 55, 207);
/* oklch */ color: oklch(44.8% 0.226 270.7);

Tailwind

colors: {
  custom: {
    50: '#826fdf',
    500: '#2f37cf',
    950: '#000000',
  },
}

SCSS

$custom: #2f37cf;
$custom-light: #826fdf;
$custom-dark: #000000;

JSON

{
  "hex": "#2f37cf",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 207
  },
  "hsl": {
    "h": 237,
    "s": 62.992,
    "l": 49.804
  },
  "oklch": {
    "l": 0.44848,
    "c": 0.22644,
    "h": 270.7
  },
  "luminance": 0.07842
}

Semantic roles & 50–950 ramp

primary

#2F37CF

secondary

#D1CD89

accent

#DE42E6

background

#F8F6FD

surface

#F0ECFB

border

#CBC7D4

text

#0D0715

muted

#7D7A83

Preview Lab

Preview with #2F37CF

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

Preview Lab → · Contrast checker → · Palette generator →