#2F40AC#2F40AC

#2F40AC is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.9% C 0.172 H 270.4°. Best body text is #FFFFFF at 8.57:1 contrast (WCAG AA passes).

Color values

HEX	#2F40AC
RGB	rgb(47, 64, 172)
HSL	hsl(232, 57%, 43%)
HSV	hsv(232, 73%, 67%)
CMYK	cmyk(72.7%, 62.8%, 0%, 32.5%)
CIE-LAB	lab(32.37, 31.05, -59.69)
CIE-LCH	lch(32.37, 67.29, 297.48°)
OKLab	oklab(42.92% 0.0012 -0.1724)
OKLCH	oklch(42.92% 0.172 270.4)
XYZ	xyz(10.4495, 7.2486, 39.8701)
Luminance	0.0725 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F40AC #AC9B2F

analogous

#2F7EAC #2F40AC #5C2FAC

triadic

#2F40AC #AC2F40 #40AC2F

tetradic

#2F40AC #AC2F7E #AC9B2F #2FAC5C

square

#2F40AC #AC2F7E #AC9B2F #2FAC5C

split-complementary

#2F40AC #AC5C2F #7EAC2F

monochromatic

#151C4C #222E7C #2F40AC #4B5CCE #7B88DB

Accessibility & contrast

On white

8.57

#2F40AC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#2F40AC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F40AC

8.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F40AC	#FFFFFF	#000000	##FFFFFF
##2F40AC	1.00	8.57	2.45	8.57
#FFFFFF	8.57	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052AF

Deuteranopia (green-blind)

#0046AA

Tritanopia (blue-blind)

#005C70

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2f40ac;
/* rgb */ color: rgb(47, 64, 172);
/* oklch */ color: oklch(42.9% 0.172 270.4);

Tailwind

colors: {
  custom: {
    50: '#7974c6',
    500: '#2f40ac',
    950: '#000000',
  },
}

SCSS

$custom: #2f40ac;
$custom-light: #7974c6;
$custom-dark: #000000;

JSON

{
  "hex": "#2f40ac",
  "rgb": {
    "r": 47,
    "g": 64,
    "b": 172
  },
  "hsl": {
    "h": 231.84,
    "s": 57.078,
    "l": 42.941
  },
  "oklch": {
    "l": 0.42919,
    "c": 0.17241,
    "h": 270.4
  },
  "luminance": 0.0725
}

Semantic roles & 50–950 ramp

primary

#2F40AC

secondary

#C3B874

accent

#CC47E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2F40AC

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

Preview Lab → · Contrast checker → · Palette generator →