#2F37A5#2F37A5

#2F37A5 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.7% C 0.174 H 272.6°. Best body text is #FFFFFF at 9.50:1 contrast (WCAG AA passes).

Color values

HEX	#2F37A5
RGB	rgb(47, 55, 165)
HSL	hsl(236, 56%, 42%)
HSV	hsv(236, 72%, 65%)
CMYK	cmyk(71.5%, 66.7%, 0%, 35.3%)
CIE-LAB	lab(29.54, 34.32, -60.11)
CIE-LCH	lch(29.54, 69.22, 299.72°)
OKLab	oklab(40.66% 0.0078 -0.1737)
OKLCH	oklch(40.66% 0.174 272.6)
XYZ	xyz(9.3277, 6.0524, 36.2667)
Luminance	0.0605 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.88

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F37A5 #A59D2F

analogous

#2F72A5 #2F37A5 #622FA5

triadic

#2F37A5 #A52F37 #37A52F

tetradic

#2F37A5 #A52F72 #A59D2F #2FA562

square

#2F37A5 #A52F72 #A59D2F #2FA562

split-complementary

#2F37A5 #A5622F #72A52F

monochromatic

#141746 #212775 #2F37A5 #4750CB #767DD8

Accessibility & contrast

On white

9.50

#2F37A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.21

#2F37A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F37A5

9.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F37A5	#FFFFFF	#000000	##FFFFFF
##2F37A5	1.00	9.50	2.21	9.50
#FFFFFF	9.50	1.00	21.00	1.00
#000000	2.21	21.00	1.00	21.00
##FFFFFF	9.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004BA8

Deuteranopia (green-blind)

#0040A3

Tritanopia (blue-blind)

#005469

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2f37a5;
/* rgb */ color: rgb(47, 55, 165);
/* oklch */ color: oklch(40.7% 0.174 272.6);

Tailwind

colors: {
  custom: {
    50: '#796ec1',
    500: '#2f37a5',
    950: '#000000',
  },
}

SCSS

$custom: #2f37a5;
$custom-light: #796ec1;
$custom-dark: #000000;

JSON

{
  "hex": "#2f37a5",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 165
  },
  "hsl": {
    "h": 235.932,
    "s": 55.66,
    "l": 41.569
  },
  "oklch": {
    "l": 0.40659,
    "c": 0.17388,
    "h": 272.6
  },
  "luminance": 0.06053
}

Semantic roles & 50–950 ramp

primary

#2F37A5

secondary

#C0BB70

accent

#D549DF

background

#F7F6FC

surface

#EEECF8

border

#C9C7D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2F37A5

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

Preview Lab → · Contrast checker → · Palette generator →