#2F43B9#2F43B9

#2F43B9 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.6% C 0.186 H 269.6°. Best body text is #FFFFFF at 8.00:1 contrast (WCAG AA passes).

Color values

HEX	#2F43B9
RGB	rgb(47, 67, 185)
HSL	hsl(231, 59%, 45%)
HSV	hsv(231, 75%, 73%)
CMYK	cmyk(74.6%, 63.8%, 0%, 27.5%)
CIE-LAB	lab(34.23, 33.85, -64.36)
CIE-LCH	lch(34.23, 72.72, 297.74°)
OKLab	oklab(44.64% -0.0013 -0.186)
OKLCH	oklch(44.64% 0.186 269.6)
XYZ	xyz(11.9334, 8.1202, 46.8280)
Luminance	0.0812 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.80

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F43B9 #B9A52F

analogous

#2F88B9 #2F43B9 #602FB9

triadic

#2F43B9 #B92F43 #43B92F

tetradic

#2F43B9 #B92F88 #B9A52F #2FB960

square

#2F43B9 #B92F88 #B9A52F #2FB960

split-complementary

#2F43B9 #B9602F #88B92F

monochromatic

#162057 #233188 #2F43B9 #5265D3 #8390DF

Accessibility & contrast

On white

8.00

#2F43B9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#2F43B9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F43B9

8.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F43B9	#FFFFFF	#000000	##FFFFFF
##2F43B9	1.00	8.00	2.62	8.00
#FFFFFF	8.00	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BD

Deuteranopia (green-blind)

#004AB7

Tritanopia (blue-blind)

#006278

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #2f43b9;
/* rgb */ color: rgb(47, 67, 185);
/* oklch */ color: oklch(44.6% 0.186 269.6);

Tailwind

colors: {
  custom: {
    50: '#7c77cf',
    500: '#2f43b9',
    950: '#000000',
  },
}

SCSS

$custom: #2f43b9;
$custom-light: #7c77cf;
$custom-dark: #000000;

JSON

{
  "hex": "#2f43b9",
  "rgb": {
    "r": 47,
    "g": 67,
    "b": 185
  },
  "hsl": {
    "h": 231.304,
    "s": 59.483,
    "l": 45.49
  },
  "oklch": {
    "l": 0.44639,
    "c": 0.18605,
    "h": 269.6
  },
  "luminance": 0.08121
}

Semantic roles & 50–950 ramp

primary

#2F43B9

secondary

#C9BD7B

accent

#CC45E3

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2F43B9

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

Preview Lab → · Contrast checker → · Palette generator →