#2F42B3#2F42B3

#2F42B3 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 43.9% C 0.179 H 269.9°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#2F42B3
RGB	rgb(47, 66, 179)
HSL	hsl(231, 58%, 44%)
HSV	hsv(231, 74%, 70%)
CMYK	cmyk(73.7%, 63.1%, 0%, 29.8%)
CIE-LAB	lab(33.47, 32.31, -62.06)
CIE-LCH	lch(33.47, 69.97, 297.50°)
OKLab	oklab(43.92% -0.0005 -0.1793)
OKLCH	oklch(43.92% 0.179 269.9)
XYZ	xyz(11.2544, 7.7543, 43.5427)
Luminance	0.0775 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F42B3 #B3A02F

analogous

#2F84B3 #2F42B3 #5E2FB3

triadic

#2F42B3 #B32F42 #42B32F

tetradic

#2F42B3 #B32F84 #B3A02F #2FB35E

square

#2F42B3 #B32F84 #B3A02F #2FB35E

split-complementary

#2F42B3 #B35E2F #84B32F

monochromatic

#161E52 #223083 #2F42B3 #4F61D1 #7F8DDD

Accessibility & contrast

On white

8.23

#2F42B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#2F42B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F42B3

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F42B3	#FFFFFF	#000000	##FFFFFF
##2F42B3	1.00	8.23	2.55	8.23
#FFFFFF	8.23	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B7

Deuteranopia (green-blind)

#0049B1

Tritanopia (blue-blind)

#005F74

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2f42b3;
/* rgb */ color: rgb(47, 66, 179);
/* oklch */ color: oklch(43.9% 0.179 269.9);

Tailwind

colors: {
  custom: {
    50: '#7b76cb',
    500: '#2f42b3',
    950: '#000000',
  },
}

SCSS

$custom: #2f42b3;
$custom-light: #7b76cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2f42b3",
  "rgb": {
    "r": 47,
    "g": 66,
    "b": 179
  },
  "hsl": {
    "h": 231.364,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.43915,
    "c": 0.17934,
    "h": 269.9
  },
  "luminance": 0.07755
}

Semantic roles & 50–950 ramp

primary

#2F42B3

secondary

#C6BB78

accent

#CB46E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F42B3

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

Preview Lab → · Contrast checker → · Palette generator →