#2F3FAB#2F3FAB

#2F3FAB is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.6% C 0.172 H 270.6°. Best body text is #FFFFFF at 8.68:1 contrast (WCAG AA passes).

Color values

HEX	#2F3FAB
RGB	rgb(47, 63, 171)
HSL	hsl(232, 57%, 43%)
HSV	hsv(232, 73%, 67%)
CMYK	cmyk(72.5%, 63.2%, 0%, 32.9%)
CIE-LAB	lab(32.03, 31.34, -59.65)
CIE-LCH	lch(32.03, 67.38, 297.72°)
OKLab	oklab(42.65% 0.0019 -0.1723)
OKLCH	oklch(42.65% 0.172 270.6)
XYZ	xyz(10.2980, 7.0986, 39.3476)
Luminance	0.0710 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F3FAB #AB9B2F

analogous

#2F7DAB #2F3FAB #5D2FAB

triadic

#2F3FAB #AB2F3F #3FAB2F

tetradic

#2F3FAB #AB2F7D #AB9B2F #2FAB5D

square

#2F3FAB #AB2F7D #AB9B2F #2FAB5D

split-complementary

#2F3FAB #AB5D2F #7DAB2F

monochromatic

#151C4B #222D7B #2F3FAB #4A5BCD #7A86DA

Accessibility & contrast

On white

8.68

#2F3FAB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#2F3FAB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3FAB

8.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3FAB	#FFFFFF	#000000	##FFFFFF
##2F3FAB	1.00	8.68	2.42	8.68
#FFFFFF	8.68	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AE

Deuteranopia (green-blind)

#0046A9

Tritanopia (blue-blind)

#005B6F

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #2f3fab;
/* rgb */ color: rgb(47, 63, 171);
/* oklch */ color: oklch(42.6% 0.172 270.6);

Tailwind

colors: {
  custom: {
    50: '#7974c5',
    500: '#2f3fab',
    950: '#000000',
  },
}

SCSS

$custom: #2f3fab;
$custom-light: #7974c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3fab",
  "rgb": {
    "r": 47,
    "g": 63,
    "b": 171
  },
  "hsl": {
    "h": 232.258,
    "s": 56.881,
    "l": 42.745
  },
  "oklch": {
    "l": 0.42645,
    "c": 0.17228,
    "h": 270.6
  },
  "luminance": 0.071
}

Semantic roles & 50–950 ramp

primary

#2F3FAB

secondary

#C3B873

accent

#CC48E0

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2F3FAB

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

Preview Lab → · Contrast checker → · Palette generator →