#2F37A6#2F37A6

#2F37A6 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.8% C 0.175 H 272.5°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#2F37A6
RGB	rgb(47, 55, 166)
HSL	hsl(236, 56%, 42%)
HSV	hsv(236, 72%, 65%)
CMYK	cmyk(71.7%, 66.9%, 0%, 34.9%)
CIE-LAB	lab(29.64, 34.67, -60.56)
CIE-LCH	lch(29.64, 69.79, 299.79°)
OKLab	oklab(40.75% 0.0077 -0.175)
OKLCH	oklch(40.75% 0.175 272.5)
XYZ	xyz(9.4191, 6.0890, 36.7479)
Luminance	0.0609 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.76

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F37A6 #A69E2F

analogous

#2F73A6 #2F37A6 #622FA6

triadic

#2F37A6 #A62F37 #37A62F

tetradic

#2F37A6 #A62F73 #A69E2F #2FA662

square

#2F37A6 #A62F73 #A69E2F #2FA662

split-complementary

#2F37A6 #A6622F #73A62F

monochromatic

#141747 #212776 #2F37A6 #4750CB #777DD8

Accessibility & contrast

On white

9.47

#2F37A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#2F37A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F37A6

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F37A6	#FFFFFF	#000000	##FFFFFF
##2F37A6	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA9

Deuteranopia (green-blind)

#0040A4

Tritanopia (blue-blind)

#005469

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2f37a6;
/* rgb */ color: rgb(47, 55, 166);
/* oklch */ color: oklch(40.8% 0.175 272.5);

Tailwind

colors: {
  custom: {
    50: '#796ec1',
    500: '#2f37a6',
    950: '#000000',
  },
}

SCSS

$custom: #2f37a6;
$custom-light: #796ec1;
$custom-dark: #000000;

JSON

{
  "hex": "#2f37a6",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 166
  },
  "hsl": {
    "h": 235.966,
    "s": 55.869,
    "l": 41.765
  },
  "oklch": {
    "l": 0.40754,
    "c": 0.17519,
    "h": 272.5
  },
  "luminance": 0.0609
}

Semantic roles & 50–950 ramp

primary

#2F37A6

secondary

#C1BB70

accent

#D549DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2F37A6

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

Preview Lab → · Contrast checker → · Palette generator →