#2F37A8#2F37A8

#2F37A8 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.9% C 0.178 H 272.4°. Best body text is #FFFFFF at 9.41:1 contrast (WCAG AA passes).

Color values

HEX	#2F37A8
RGB	rgb(47, 55, 168)
HSL	hsl(236, 56%, 42%)
HSV	hsv(236, 72%, 66%)
CMYK	cmyk(72%, 67.3%, 0%, 34.1%)
CIE-LAB	lab(29.82, 35.39, -61.47)
CIE-LCH	lch(29.82, 70.92, 299.93°)
OKLab	oklab(40.94% 0.0076 -0.1777)
OKLCH	oklch(40.94% 0.178 272.4)
XYZ	xyz(9.6040, 6.1629, 37.7216)
Luminance	0.0616 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.54

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F37A8 #A8A02F

analogous

#2F74A8 #2F37A8 #642FA8

triadic

#2F37A8 #A82F37 #37A82F

tetradic

#2F37A8 #A82F74 #A8A02F #2FA864

square

#2F37A8 #A82F74 #A8A02F #2FA864

split-complementary

#2F37A8 #A8642F #74A82F

monochromatic

#141848 #222778 #2F37A8 #4851CC #787FD9

Accessibility & contrast

On white

9.41

#2F37A8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#2F37A8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F37A8

9.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F37A8	#FFFFFF	#000000	##FFFFFF
##2F37A8	1.00	9.41	2.23	9.41
#FFFFFF	9.41	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CAC

Deuteranopia (green-blind)

#0041A6

Tritanopia (blue-blind)

#00556A

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #2f37a8;
/* rgb */ color: rgb(47, 55, 168);
/* oklch */ color: oklch(40.9% 0.178 272.4);

Tailwind

colors: {
  custom: {
    50: '#796ec3',
    500: '#2f37a8',
    950: '#000000',
  },
}

SCSS

$custom: #2f37a8;
$custom-light: #796ec3;
$custom-dark: #000000;

JSON

{
  "hex": "#2f37a8",
  "rgb": {
    "r": 47,
    "g": 55,
    "b": 168
  },
  "hsl": {
    "h": 236.033,
    "s": 56.279,
    "l": 42.157
  },
  "oklch": {
    "l": 0.40944,
    "c": 0.17782,
    "h": 272.4
  },
  "luminance": 0.06164
}

Semantic roles & 50–950 ramp

primary

#2F37A8

secondary

#C1BC71

accent

#D648E0

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0A0713

muted

#7C7A82

Preview Lab

Preview with #2F37A8

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

Preview Lab → · Contrast checker → · Palette generator →