#2F3FB4#2F3FB4

#2F3FB4 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.5% C 0.184 H 270.5°. Best body text is #FFFFFF at 8.43:1 contrast (WCAG AA passes).

Color values

HEX	#2F3FB4
RGB	rgb(47, 63, 180)
HSL	hsl(233, 59%, 45%)
HSV	hsv(233, 74%, 71%)
CMYK	cmyk(73.9%, 65%, 0%, 29.4%)
CIE-LAB	lab(32.82, 34.60, -63.72)
CIE-LCH	lch(32.82, 72.51, 298.50°)
OKLab	oklab(43.47% 0.0015 -0.1842)
OKLCH	oklch(43.47% 0.184 270.5)
XYZ	xyz(11.1852, 7.4535, 44.0203)
Luminance	0.0746 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F3FB4 #B4A42F

analogous

#2F82B4 #2F3FB4 #622FB4

triadic

#2F3FB4 #B42F3F #3FB42F

tetradic

#2F3FB4 #B42F82 #B4A42F #2FB462

square

#2F3FB4 #B42F82 #B4A42F #2FB462

split-complementary

#2F3FB4 #B4622F #82B42F

monochromatic

#161D53 #222E83 #2F3FB4 #4F5FD1 #808BDE

Accessibility & contrast

On white

8.43

#2F3FB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#2F3FB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3FB4

8.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3FB4	#FFFFFF	#000000	##FFFFFF
##2F3FB4	1.00	8.43	2.49	8.43
#FFFFFF	8.43	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054B8

Deuteranopia (green-blind)

#0047B2

Tritanopia (blue-blind)

#005E74

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2f3fb4;
/* rgb */ color: rgb(47, 63, 180);
/* oklch */ color: oklch(43.5% 0.184 270.5);

Tailwind

colors: {
  custom: {
    50: '#7b74cb',
    500: '#2f3fb4',
    950: '#000000',
  },
}

SCSS

$custom: #2f3fb4;
$custom-light: #7b74cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3fb4",
  "rgb": {
    "r": 47,
    "g": 63,
    "b": 180
  },
  "hsl": {
    "h": 232.782,
    "s": 58.59,
    "l": 44.51
  },
  "oklch": {
    "l": 0.43466,
    "c": 0.18422,
    "h": 270.5
  },
  "luminance": 0.07455
}

Semantic roles & 50–950 ramp

primary

#2F3FB4

secondary

#C7BD78

accent

#CF46E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F3FB4

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

Preview Lab → · Contrast checker → · Palette generator →