#2F40A6#2F40A6

#2F40A6 is a dark, vivid blue. Relative luminance 0.070; OKLCH L 42.4% C 0.164 H 270.4°. Best body text is #FFFFFF at 8.73:1 contrast (WCAG AA passes).

Color values

HEX	#2F40A6
RGB	rgb(47, 64, 166)
HSL	hsl(231, 56%, 42%)
HSV	hsv(231, 72%, 65%)
CMYK	cmyk(71.7%, 61.4%, 0%, 34.9%)
CIE-LAB	lab(31.86, 28.85, -56.93)
CIE-LCH	lch(31.86, 63.82, 296.88°)
OKLab	oklab(42.39% 0.0013 -0.1643)
OKLCH	oklch(42.39% 0.164 270.4)
XYZ	xyz(9.8863, 7.0233, 36.9036)
Luminance	0.0702 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F40A6 #A6952F

analogous

#2F7CA6 #2F40A6 #5A2FA6

triadic

#2F40A6 #A62F40 #40A62F

tetradic

#2F40A6 #A62F7C #A6952F #2FA65A

square

#2F40A6 #A62F7C #A6952F #2FA65A

split-complementary

#2F40A6 #A65A2F #7CA62F

monochromatic

#141B47 #212E76 #2F40A6 #475ACB #7785D8

Accessibility & contrast

On white

8.73

#2F40A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.40

#2F40A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F40A6

8.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F40A6	#FFFFFF	#000000	##FFFFFF
##2F40A6	1.00	8.73	2.40	8.73
#FFFFFF	8.73	1.00	21.00	1.00
#000000	2.40	21.00	1.00	21.00
##FFFFFF	8.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051A9

Deuteranopia (green-blind)

#0046A4

Tritanopia (blue-blind)

#005A6D

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2f40a6;
/* rgb */ color: rgb(47, 64, 166);
/* oklch */ color: oklch(42.4% 0.164 270.4);

Tailwind

colors: {
  custom: {
    50: '#7874c1',
    500: '#2f40a6',
    950: '#000000',
  },
}

SCSS

$custom: #2f40a6;
$custom-light: #7874c1;
$custom-dark: #000000;

JSON

{
  "hex": "#2f40a6",
  "rgb": {
    "r": 47,
    "g": 64,
    "b": 166
  },
  "hsl": {
    "h": 231.429,
    "s": 55.869,
    "l": 41.765
  },
  "oklch": {
    "l": 0.42387,
    "c": 0.1643,
    "h": 270.4
  },
  "luminance": 0.07024
}

Semantic roles & 50–950 ramp

primary

#2F40A6

secondary

#C1B570

accent

#CA49DF

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2F40A6

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

Preview Lab → · Contrast checker → · Palette generator →