#2F3FB0#2F3FB0

#2F3FB0 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.1% C 0.179 H 270.5°. Best body text is #FFFFFF at 8.54:1 contrast (WCAG AA passes).

Color values

HEX	#2F3FB0
RGB	rgb(47, 63, 176)
HSL	hsl(233, 58%, 44%)
HSV	hsv(233, 73%, 69%)
CMYK	cmyk(73.3%, 64.2%, 0%, 31%)
CIE-LAB	lab(32.46, 33.16, -61.92)
CIE-LCH	lch(32.46, 70.24, 298.17°)
OKLab	oklab(43.1% 0.0017 -0.1789)
OKLCH	oklch(43.1% 0.179 270.5)
XYZ	xyz(10.7836, 7.2928, 41.9052)
Luminance	0.0729 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F3FB0 #B0A02F

analogous

#2F7FB0 #2F3FB0 #5F2FB0

triadic

#2F3FB0 #B02F3F #3FB02F

tetradic

#2F3FB0 #B02F7F #B0A02F #2FB05F

square

#2F3FB0 #B02F7F #B0A02F #2FB05F

split-complementary

#2F3FB0 #B05F2F #7FB02F

monochromatic

#151C4F #222E80 #2F3FB0 #4D5DCF #7D89DC

Accessibility & contrast

On white

8.54

#2F3FB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.46

#2F3FB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3FB0

8.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3FB0	#FFFFFF	#000000	##FFFFFF
##2F3FB0	1.00	8.54	2.46	8.54
#FFFFFF	8.54	1.00	21.00	1.00
#000000	2.46	21.00	1.00	21.00
##FFFFFF	8.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B4

Deuteranopia (green-blind)

#0046AE

Tritanopia (blue-blind)

#005C71

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2f3fb0;
/* rgb */ color: rgb(47, 63, 176);
/* oklch */ color: oklch(43.1% 0.179 270.5);

Tailwind

colors: {
  custom: {
    50: '#7a74c9',
    500: '#2f3fb0',
    950: '#000000',
  },
}

SCSS

$custom: #2f3fb0;
$custom-light: #7a74c9;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3fb0",
  "rgb": {
    "r": 47,
    "g": 63,
    "b": 176
  },
  "hsl": {
    "h": 232.558,
    "s": 57.848,
    "l": 43.725
  },
  "oklch": {
    "l": 0.43098,
    "c": 0.17895,
    "h": 270.5
  },
  "luminance": 0.07294
}

Semantic roles & 50–950 ramp

primary

#2F3FB0

secondary

#C5BB76

accent

#CE47E1

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F3FB0

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

Preview Lab → · Contrast checker → · Palette generator →