#2F40A3#2F40A3

#2F40A3 is a dark, vivid blue. Relative luminance 0.069; OKLCH L 42.1% C 0.160 H 270.5°. Best body text is #FFFFFF at 8.81:1 contrast (WCAG AA passes).

Color values

HEX	#2F40A3
RGB	rgb(47, 64, 163)
HSL	hsl(231, 55%, 41%)
HSV	hsv(231, 71%, 64%)
CMYK	cmyk(71.2%, 60.7%, 0%, 36.1%)
CIE-LAB	lab(31.61, 27.75, -55.53)
CIE-LCH	lch(31.61, 62.07, 296.55°)
OKLab	oklab(42.13% 0.0013 -0.1602)
OKLCH	oklch(42.13% 0.16 270.5)
XYZ	xyz(9.6143, 6.9145, 35.4712)
Luminance	0.0692 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F40A3 #A3922F

analogous

#2F7AA3 #2F40A3 #582FA3

triadic

#2F40A3 #A32F40 #40A32F

tetradic

#2F40A3 #A32F7A #A3922F #2FA358

square

#2F40A3 #A32F7A #A3922F #2FA358

split-complementary

#2F40A3 #A3582F #7AA32F

monochromatic

#141B44 #212D73 #2F40A3 #4659CA #7584D7

Accessibility & contrast

On white

8.81

#2F40A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.38

#2F40A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F40A3

8.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F40A3	#FFFFFF	#000000	##FFFFFF
##2F40A3	1.00	8.81	2.38	8.81
#FFFFFF	8.81	1.00	21.00	1.00
#000000	2.38	21.00	1.00	21.00
##FFFFFF	8.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A6

Deuteranopia (green-blind)

#0045A1

Tritanopia (blue-blind)

#00596B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #2f40a3;
/* rgb */ color: rgb(47, 64, 163);
/* oklch */ color: oklch(42.1% 0.160 270.5);

Tailwind

colors: {
  custom: {
    50: '#7774bf',
    500: '#2f40a3',
    950: '#000000',
  },
}

SCSS

$custom: #2f40a3;
$custom-light: #7774bf;
$custom-dark: #000000;

JSON

{
  "hex": "#2f40a3",
  "rgb": {
    "r": 47,
    "g": 64,
    "b": 163
  },
  "hsl": {
    "h": 231.207,
    "s": 55.238,
    "l": 41.176
  },
  "oklch": {
    "l": 0.42126,
    "c": 0.16019,
    "h": 270.5
  },
  "luminance": 0.06915
}

Semantic roles & 50–950 ramp

primary

#2F40A3

secondary

#BFB36F

accent

#C949DF

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2F40A3

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

Preview Lab → · Contrast checker → · Palette generator →