#2F40AB#2F40AB

#2F40AB is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.171 H 270.4°. Best body text is #FFFFFF at 8.60:1 contrast (WCAG AA passes).

Color values

HEX	#2F40AB
RGB	rgb(47, 64, 171)
HSL	hsl(232, 57%, 43%)
HSV	hsv(232, 73%, 67%)
CMYK	cmyk(72.5%, 62.6%, 0%, 32.9%)
CIE-LAB	lab(32.28, 30.69, -59.24)
CIE-LCH	lch(32.28, 66.71, 297.39°)
OKLab	oklab(42.83% 0.0012 -0.1711)
OKLCH	oklch(42.83% 0.171 270.4)
XYZ	xyz(10.3539, 7.2103, 39.3663)
Luminance	0.0721 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F40AB #AB9A2F

analogous

#2F7EAB #2F40AB #5C2FAB

triadic

#2F40AB #AB2F40 #40AB2F

tetradic

#2F40AB #AB2F7E #AB9A2F #2FAB5C

square

#2F40AB #AB2F7E #AB9A2F #2FAB5C

split-complementary

#2F40AB #AB5C2F #7EAB2F

monochromatic

#151C4B #222E7B #2F40AB #4A5CCD #7A87DA

Accessibility & contrast

On white

8.60

#2F40AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#2F40AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F40AB

8.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F40AB	#FFFFFF	#000000	##FFFFFF
##2F40AB	1.00	8.60	2.44	8.60
#FFFFFF	8.60	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AE

Deuteranopia (green-blind)

#0046A9

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2f40ab;
/* rgb */ color: rgb(47, 64, 171);
/* oklch */ color: oklch(42.8% 0.171 270.4);

Tailwind

colors: {
  custom: {
    50: '#7974c5',
    500: '#2f40ab',
    950: '#000000',
  },
}

SCSS

$custom: #2f40ab;
$custom-light: #7974c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2f40ab",
  "rgb": {
    "r": 47,
    "g": 64,
    "b": 171
  },
  "hsl": {
    "h": 231.774,
    "s": 56.881,
    "l": 42.745
  },
  "oklch": {
    "l": 0.4283,
    "c": 0.17106,
    "h": 270.4
  },
  "luminance": 0.07211
}

Semantic roles & 50–950 ramp

primary

#2F40AB

secondary

#C3B873

accent

#CB48E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2F40AB

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

Preview Lab → · Contrast checker → · Palette generator →