#2F37A1#2F37A1

#2F37A1 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.3% C 0.169 H 272.8°. Best body text is #FFFFFF at 9.62:1 contrast (WCAG AA passes).

Color values

HEX	#2F37A1
RGB	rgb(47, 55, 161)
HSL	hsl(236, 55%, 41%)
HSV	hsv(236, 71%, 63%)
CMYK	cmyk(70.8%, 65.8%, 0%, 36.9%)
CIE-LAB	lab(29.18, 32.89, -58.29)
CIE-LCH	lch(29.18, 66.93, 299.43°)
OKLab	oklab(40.28% 0.0081 -0.1684)
OKLCH	oklch(40.28% 0.169 272.8)
XYZ	xyz(8.9693, 5.9091, 34.3792)
Luminance	0.0591 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F37A1 #A1992F

analogous

#2F70A1 #2F37A1 #602FA1

triadic

#2F37A1 #A12F37 #37A12F

tetradic

#2F37A1 #A12F70 #A1992F #2FA160

square

#2F37A1 #A12F70 #A1992F #2FA160

split-complementary

#2F37A1 #A1602F #70A12F

monochromatic

#131742 #212772 #2F37A1 #454EC9 #747BD6

Accessibility & contrast

On white

9.62

#2F37A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#2F37A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F37A1

9.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F37A1	#FFFFFF	#000000	##FFFFFF
##2F37A1	1.00	9.62	2.18	9.62
#FFFFFF	9.62	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA4

Deuteranopia (green-blind)

#00409F

Tritanopia (blue-blind)

#005367

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2f37a1;
/* rgb */ color: rgb(47, 55, 161);
/* oklch */ color: oklch(40.3% 0.169 272.8);

Tailwind

colors: {
  custom: {
    50: '#786ebe',
    500: '#2f37a1',
    950: '#000000',
  },
}

SCSS

$custom: #2f37a1;
$custom-light: #786ebe;
$custom-dark: #000000;

JSON

{
  "hex": "#2f37a1",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 161
  },
  "hsl": {
    "h": 235.789,
    "s": 54.808,
    "l": 40.784
  },
  "oklch": {
    "l": 0.40284,
    "c": 0.16856,
    "h": 272.8
  },
  "luminance": 0.0591
}

Semantic roles & 50–950 ramp

primary

#2F37A1

secondary

#BEB96E

accent

#D44ADE

background

#F7F6FB

surface

#EEEBF7

border

#C9C6D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2F37A1

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

Preview Lab → · Contrast checker → · Palette generator →