#2F37A7#2F37A7

#2F37A7 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.8% C 0.177 H 272.5°. Best body text is #FFFFFF at 9.44:1 contrast (WCAG AA passes).

Color values

HEX	#2F37A7
RGB	rgb(47, 55, 167)
HSL	hsl(236, 56%, 42%)
HSV	hsv(236, 72%, 65%)
CMYK	cmyk(71.9%, 67.1%, 0%, 34.5%)
CIE-LAB	lab(29.73, 35.03, -61.02)
CIE-LCH	lch(29.73, 70.36, 299.86°)
OKLab	oklab(40.85% 0.0076 -0.1763)
OKLCH	oklch(40.85% 0.177 272.5)
XYZ	xyz(9.5112, 6.1258, 37.2329)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.65

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F37A7 #A79F2F

analogous

#2F73A7 #2F37A7 #632FA7

triadic

#2F37A7 #A72F37 #37A72F

tetradic

#2F37A7 #A72F73 #A79F2F #2FA763

square

#2F37A7 #A72F73 #A79F2F #2FA763

split-complementary

#2F37A7 #A7632F #73A72F

monochromatic

#141847 #222777 #2F37A7 #4851CB #787ED9

Accessibility & contrast

On white

9.44

#2F37A7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#2F37A7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F37A7

9.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F37A7	#FFFFFF	#000000	##FFFFFF
##2F37A7	1.00	9.44	2.23	9.44
#FFFFFF	9.44	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAA

Deuteranopia (green-blind)

#0040A5

Tritanopia (blue-blind)

#00556A

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2f37a7;
/* rgb */ color: rgb(47, 55, 167);
/* oklch */ color: oklch(40.8% 0.177 272.5);

Tailwind

colors: {
  custom: {
    50: '#796ec2',
    500: '#2f37a7',
    950: '#000000',
  },
}

SCSS

$custom: #2f37a7;
$custom-light: #796ec2;
$custom-dark: #000000;

JSON

{
  "hex": "#2f37a7",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 167
  },
  "hsl": {
    "h": 236,
    "s": 56.075,
    "l": 41.961
  },
  "oklch": {
    "l": 0.40849,
    "c": 0.17651,
    "h": 272.5
  },
  "luminance": 0.06127
}

Semantic roles & 50–950 ramp

primary

#2F37A7

secondary

#C1BC71

accent

#D548DF

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2F37A7

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

Preview Lab → · Contrast checker → · Palette generator →