#2F42B8#2F42B8

#2F42B8 is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.4% C 0.186 H 269.8°. Best body text is #FFFFFF at 8.10:1 contrast (WCAG AA passes).

Color values

HEX	#2F42B8
RGB	rgb(47, 66, 184)
HSL	hsl(232, 59%, 45%)
HSV	hsv(232, 74%, 72%)
CMYK	cmyk(74.5%, 64.1%, 0%, 27.8%)
CIE-LAB	lab(33.90, 34.13, -64.31)
CIE-LCH	lch(33.90, 72.81, 297.95°)
OKLab	oklab(44.37% -0.0007 -0.1859)
OKLCH	oklch(44.37% 0.186 269.8)
XYZ	xyz(11.7693, 7.9602, 46.2543)
Luminance	0.0796 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 5.73

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F42B8 #B8A52F

analogous

#2F86B8 #2F42B8 #612FB8

triadic

#2F42B8 #B82F42 #42B82F

tetradic

#2F42B8 #B82F86 #B8A52F #2FB861

square

#2F42B8 #B82F86 #B8A52F #2FB861

split-complementary

#2F42B8 #B8612F #86B82F

monochromatic

#161F57 #233187 #2F42B8 #5263D3 #828FDF

Accessibility & contrast

On white

8.10

#2F42B8 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#2F42B8 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F42B8

8.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F42B8	#FFFFFF	#000000	##FFFFFF
##2F42B8	1.00	8.10	2.59	8.10
#FFFFFF	8.10	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056BC

Deuteranopia (green-blind)

#0049B6

Tritanopia (blue-blind)

#006177

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #2f42b8;
/* rgb */ color: rgb(47, 66, 184);
/* oklch */ color: oklch(44.4% 0.186 269.8);

Tailwind

colors: {
  custom: {
    50: '#7c76ce',
    500: '#2f42b8',
    950: '#000000',
  },
}

SCSS

$custom: #2f42b8;
$custom-light: #7c76ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2f42b8",
  "rgb": {
    "r": 47,
    "g": 66,
    "b": 184
  },
  "hsl": {
    "h": 231.679,
    "s": 59.307,
    "l": 45.294
  },
  "oklch": {
    "l": 0.44368,
    "c": 0.18592,
    "h": 269.8
  },
  "luminance": 0.07961
}

Semantic roles & 50–950 ramp

primary

#2F42B8

secondary

#C8BD7B

accent

#CD45E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #2F42B8

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

Preview Lab → · Contrast checker → · Palette generator →