#2F37A3#2F37A3

#2F37A3 is a dark, vivid blue. Relative luminance 0.060; OKLCH L 40.5% C 0.171 H 272.7°. Best body text is #FFFFFF at 9.56:1 contrast (WCAG AA passes).

Color values

HEX	#2F37A3
RGB	rgb(47, 55, 163)
HSL	hsl(236, 55%, 41%)
HSV	hsv(236, 71%, 64%)
CMYK	cmyk(71.2%, 66.3%, 0%, 36.1%)
CIE-LAB	lab(29.36, 33.60, -59.20)
CIE-LCH	lch(29.36, 68.08, 299.58°)
OKLab	oklab(40.47% 0.008 -0.171)
OKLCH	oklch(40.47% 0.171 272.7)
XYZ	xyz(9.1471, 5.9802, 35.3155)
Luminance	0.0598 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F37A3 #A39B2F

analogous

#2F71A3 #2F37A3 #612FA3

triadic

#2F37A3 #A32F37 #37A32F

tetradic

#2F37A3 #A32F71 #A39B2F #2FA361

square

#2F37A3 #A32F71 #A39B2F #2FA361

split-complementary

#2F37A3 #A3612F #71A32F

monochromatic

#141744 #212773 #2F37A3 #464FCA #757CD7

Accessibility & contrast

On white

9.56

#2F37A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.20

#2F37A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F37A3

9.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F37A3	#FFFFFF	#000000	##FFFFFF
##2F37A3	1.00	9.56	2.20	9.56
#FFFFFF	9.56	1.00	21.00	1.00
#000000	2.20	21.00	1.00	21.00
##FFFFFF	9.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA6

Deuteranopia (green-blind)

#0040A1

Tritanopia (blue-blind)

#005368

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #2f37a3;
/* rgb */ color: rgb(47, 55, 163);
/* oklch */ color: oklch(40.5% 0.171 272.7);

Tailwind

colors: {
  custom: {
    50: '#786ebf',
    500: '#2f37a3',
    950: '#000000',
  },
}

SCSS

$custom: #2f37a3;
$custom-light: #786ebf;
$custom-dark: #000000;

JSON

{
  "hex": "#2f37a3",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 163
  },
  "hsl": {
    "h": 235.862,
    "s": 55.238,
    "l": 41.176
  },
  "oklch": {
    "l": 0.40471,
    "c": 0.17122,
    "h": 272.7
  },
  "luminance": 0.05981
}

Semantic roles & 50–950 ramp

primary

#2F37A3

secondary

#BFBA6F

accent

#D449DF

background

#F7F6FB

surface

#EEECF7

border

#C9C7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2F37A3

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

Preview Lab → · Contrast checker → · Palette generator →