#2F37A9#2F37A9

#2F37A9 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.0% C 0.179 H 272.4°. Best body text is #FFFFFF at 9.37:1 contrast (WCAG AA passes).

Color values

HEX	#2F37A9
RGB	rgb(47, 55, 169)
HSL	hsl(236, 56%, 42%)
HSV	hsv(236, 72%, 66%)
CMYK	cmyk(72.2%, 67.5%, 0%, 33.7%)
CIE-LAB	lab(29.91, 35.74, -61.92)
CIE-LCH	lch(29.91, 71.49, 300.00°)
OKLab	oklab(41.04% 0.0075 -0.179)
OKLCH	oklch(41.04% 0.179 272.4)
XYZ	xyz(9.6975, 6.2003, 38.2141)
Luminance	0.0620 (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

#2F37A9 #A9A12F

analogous

#2F74A9 #2F37A9 #642FA9

triadic

#2F37A9 #A92F37 #37A92F

tetradic

#2F37A9 #A92F74 #A9A12F #2FA964

square

#2F37A9 #A92F74 #A9A12F #2FA964

split-complementary

#2F37A9 #A9642F #74A92F

monochromatic

#141849 #222779 #2F37A9 #4951CC #797FDA

Accessibility & contrast

On white

9.37

#2F37A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#2F37A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F37A9

9.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F37A9	#FFFFFF	#000000	##FFFFFF
##2F37A9	1.00	9.37	2.24	9.37
#FFFFFF	9.37	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAD

Deuteranopia (green-blind)

#0041A7

Tritanopia (blue-blind)

#00556B

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2f37a9;
/* rgb */ color: rgb(47, 55, 169);
/* oklch */ color: oklch(41.0% 0.179 272.4);

Tailwind

colors: {
  custom: {
    50: '#796ec4',
    500: '#2f37a9',
    950: '#000000',
  },
}

SCSS

$custom: #2f37a9;
$custom-light: #796ec4;
$custom-dark: #000000;

JSON

{
  "hex": "#2f37a9",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 169
  },
  "hsl": {
    "h": 236.066,
    "s": 56.481,
    "l": 42.353
  },
  "oklch": {
    "l": 0.4104,
    "c": 0.17912,
    "h": 272.4
  },
  "luminance": 0.06201
}

Semantic roles & 50–950 ramp

primary

#2F37A9

secondary

#C2BD72

accent

#D648E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2F37A9

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

Preview Lab → · Contrast checker → · Palette generator →