#2F40A9#2F40A9

#2F40A9 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.7% C 0.168 H 270.4°. Best body text is #FFFFFF at 8.65:1 contrast (WCAG AA passes).

Color values

HEX	#2F40A9
RGB	rgb(47, 64, 169)
HSL	hsl(232, 56%, 42%)
HSV	hsv(232, 72%, 66%)
CMYK	cmyk(72.2%, 62.1%, 0%, 33.7%)
CIE-LAB	lab(32.11, 29.95, -58.32)
CIE-LCH	lch(32.11, 65.56, 297.19°)
OKLab	oklab(42.65% 0.0012 -0.1684)
OKLCH	oklch(42.65% 0.168 270.4)
XYZ	xyz(10.1647, 7.1347, 38.3699)
Luminance	0.0714 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F40A9 #A9982F

analogous

#2F7DA9 #2F40A9 #5B2FA9

triadic

#2F40A9 #A92F40 #40A92F

tetradic

#2F40A9 #A92F7D #A9982F #2FA95B

square

#2F40A9 #A92F7D #A9982F #2FA95B

split-complementary

#2F40A9 #A95B2F #7DA92F

monochromatic

#141C49 #222E79 #2F40A9 #495BCC #7986DA

Accessibility & contrast

On white

8.65

#2F40A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#2F40A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F40A9

8.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F40A9	#FFFFFF	#000000	##FFFFFF
##2F40A9	1.00	8.65	2.43	8.65
#FFFFFF	8.65	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AC

Deuteranopia (green-blind)

#0046A7

Tritanopia (blue-blind)

#005B6E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2f40a9;
/* rgb */ color: rgb(47, 64, 169);
/* oklch */ color: oklch(42.7% 0.168 270.4);

Tailwind

colors: {
  custom: {
    50: '#7974c3',
    500: '#2f40a9',
    950: '#000000',
  },
}

SCSS

$custom: #2f40a9;
$custom-light: #7974c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2f40a9",
  "rgb": {
    "r": 47,
    "g": 64,
    "b": 169
  },
  "hsl": {
    "h": 231.639,
    "s": 56.481,
    "l": 42.353
  },
  "oklch": {
    "l": 0.42652,
    "c": 0.16836,
    "h": 270.4
  },
  "luminance": 0.07136
}

Semantic roles & 50–950 ramp

primary

#2F40A9

secondary

#C2B772

accent

#CB48E0

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2F40A9

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

Preview Lab → · Contrast checker → · Palette generator →