#2F43B8#2F43B8

#2F43B8 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.5% C 0.185 H 269.6°. Best body text is #FFFFFF at 8.03:1 contrast (WCAG AA passes).

Color values

HEX	#2F43B8
RGB	rgb(47, 67, 184)
HSL	hsl(231, 59%, 45%)
HSV	hsv(231, 74%, 72%)
CMYK	cmyk(74.5%, 63.6%, 0%, 27.8%)
CIE-LAB	lab(34.15, 33.49, -63.91)
CIE-LCH	lch(34.15, 72.15, 297.65°)
OKLab	oklab(44.55% -0.0013 -0.1847)
OKLCH	oklch(44.55% 0.185 269.6)
XYZ	xyz(11.8282, 8.0781, 46.2740)
Luminance	0.0808 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.89

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F43B8 #B8A42F

analogous

#2F87B8 #2F43B8 #602FB8

triadic

#2F43B8 #B82F43 #43B82F

tetradic

#2F43B8 #B82F87 #B8A42F #2FB860

square

#2F43B8 #B82F87 #B8A42F #2FB860

split-complementary

#2F43B8 #B8602F #87B82F

monochromatic

#161F57 #233187 #2F43B8 #5264D3 #8290DF

Accessibility & contrast

On white

8.03

#2F43B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.62

#2F43B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F43B8

8.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F43B8	#FFFFFF	#000000	##FFFFFF
##2F43B8	1.00	8.03	2.62	8.03
#FFFFFF	8.03	1.00	21.00	1.00
#000000	2.62	21.00	1.00	21.00
##FFFFFF	8.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057BC

Deuteranopia (green-blind)

#004AB6

Tritanopia (blue-blind)

#006177

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #2f43b8;
/* rgb */ color: rgb(47, 67, 184);
/* oklch */ color: oklch(44.5% 0.185 269.6);

Tailwind

colors: {
  custom: {
    50: '#7c77ce',
    500: '#2f43b8',
    950: '#000000',
  },
}

SCSS

$custom: #2f43b8;
$custom-light: #7c77ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2f43b8",
  "rgb": {
    "r": 47,
    "g": 67,
    "b": 184
  },
  "hsl": {
    "h": 231.241,
    "s": 59.307,
    "l": 45.294
  },
  "oklch": {
    "l": 0.44549,
    "c": 0.18474,
    "h": 269.6
  },
  "luminance": 0.08079
}

Semantic roles & 50–950 ramp

primary

#2F43B8

secondary

#C8BD7B

accent

#CC45E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2F43B8

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

Preview Lab → · Contrast checker → · Palette generator →