#2F3F9B#2F3F9B

#2F3F9B is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.2% C 0.150 H 270.8°. Best body text is #FFFFFF at 9.11:1 contrast (WCAG AA passes).

Color values

HEX	#2F3F9B
RGB	rgb(47, 63, 155)
HSL	hsl(231, 53%, 40%)
HSV	hsv(231, 70%, 61%)
CMYK	cmyk(69.7%, 59.4%, 0%, 39.2%)
CIE-LAB	lab(30.70, 25.45, -52.17)
CIE-LCH	lch(30.70, 58.05, 296.00°)
OKLab	oklab(41.25% 0.0021 -0.1503)
OKLCH	oklch(41.25% 0.15 270.8)
XYZ	xyz(8.8642, 6.5251, 31.7963)
Luminance	0.0653 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F3F9B #9B8B2F

analogous

#2F759B #2F3F9B #552F9B

triadic

#2F3F9B #9B2F3F #3F9B2F

tetradic

#2F3F9B #9B2F75 #9B8B2F #2F9B55

square

#2F3F9B #9B2F75 #9B8B2F #2F9B55

split-complementary

#2F3F9B #9B552F #759B2F

monochromatic

#13193D #212C6C #2F3F9B #4255C6 #717FD4

Accessibility & contrast

On white

9.11

#2F3F9B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#2F3F9B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3F9B

9.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3F9B	#FFFFFF	#000000	##FFFFFF
##2F3F9B	1.00	9.11	2.31	9.11
#FFFFFF	9.11	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.11	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9E

Deuteranopia (green-blind)

#004399

Tritanopia (blue-blind)

#005666

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #2f3f9b;
/* rgb */ color: rgb(47, 63, 155);
/* oklch */ color: oklch(41.2% 0.150 270.8);

Tailwind

colors: {
  custom: {
    50: '#7673b9',
    500: '#2f3f9b',
    950: '#000000',
  },
}

SCSS

$custom: #2f3f9b;
$custom-light: #7673b9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3f9b",
  "rgb": {
    "r": 47,
    "g": 63,
    "b": 155
  },
  "hsl": {
    "h": 231.111,
    "s": 53.465,
    "l": 39.608
  },
  "oklch": {
    "l": 0.41245,
    "c": 0.15034,
    "h": 270.8
  },
  "luminance": 0.06526
}

Semantic roles & 50–950 ramp

primary

#2F3F9B

secondary

#BBAF6A

accent

#C74BDD

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #2F3F9B

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

Preview Lab → · Contrast checker → · Palette generator →