#2F3FB3#2F3FB3

#2F3FB3 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.4% C 0.183 H 270.5°. Best body text is #FFFFFF at 8.46:1 contrast (WCAG AA passes).

Color values

HEX	#2F3FB3
RGB	rgb(47, 63, 179)
HSL	hsl(233, 58%, 44%)
HSV	hsv(233, 74%, 70%)
CMYK	cmyk(73.7%, 64.8%, 0%, 29.8%)
CIE-LAB	lab(32.73, 34.24, -63.27)
CIE-LCH	lch(32.73, 71.94, 298.42°)
OKLab	oklab(43.37% 0.0015 -0.1829)
OKLCH	oklch(43.37% 0.183 270.5)
XYZ	xyz(11.0837, 7.4129, 43.4858)
Luminance	0.0741 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F3FB3 #B3A32F

analogous

#2F81B3 #2F3FB3 #612FB3

triadic

#2F3FB3 #B32F3F #3FB32F

tetradic

#2F3FB3 #B32F81 #B3A32F #2FB361

square

#2F3FB3 #B32F81 #B3A32F #2FB361

split-complementary

#2F3FB3 #B3612F #81B32F

monochromatic

#161D52 #222E83 #2F3FB3 #4F5ED1 #7F8ADD

Accessibility & contrast

On white

8.46

#2F3FB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#2F3FB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F3FB3

8.46:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F3FB3	#FFFFFF	#000000	##FFFFFF
##2F3FB3	1.00	8.46	2.48	8.46
#FFFFFF	8.46	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.46	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053B7

Deuteranopia (green-blind)

#0047B1

Tritanopia (blue-blind)

#005D73

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2f3fb3;
/* rgb */ color: rgb(47, 63, 179);
/* oklch */ color: oklch(43.4% 0.183 270.5);

Tailwind

colors: {
  custom: {
    50: '#7b74cb',
    500: '#2f3fb3',
    950: '#000000',
  },
}

SCSS

$custom: #2f3fb3;
$custom-light: #7b74cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2f3fb3",
  "rgb": {
    "r": 47,
    "g": 63,
    "b": 179
  },
  "hsl": {
    "h": 232.727,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43374,
    "c": 0.1829,
    "h": 270.5
  },
  "luminance": 0.07414
}

Semantic roles & 50–950 ramp

primary

#2F3FB3

secondary

#C6BD78

accent

#CF46E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F3FB3

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

Preview Lab → · Contrast checker → · Palette generator →