#2F42B5#2F42B5

#2F42B5 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.1% C 0.182 H 269.8°. Best body text is #FFFFFF at 8.18:1 contrast (WCAG AA passes).

Color values

HEX	#2F42B5
RGB	rgb(47, 66, 181)
HSL	hsl(231, 59%, 45%)
HSV	hsv(231, 74%, 71%)
CMYK	cmyk(74%, 63.5%, 0%, 29%)
CIE-LAB	lab(33.64, 33.04, -62.97)
CIE-LCH	lch(33.64, 71.11, 297.69°)
OKLab	oklab(44.1% -0.0005 -0.182)
OKLCH	oklch(44.1% 0.182 269.8)
XYZ	xyz(11.4581, 7.8358, 44.6157)
Luminance	0.0784 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F42B5 #B5A22F

analogous

#2F85B5 #2F42B5 #5F2FB5

triadic

#2F42B5 #B52F42 #42B52F

tetradic

#2F42B5 #B52F85 #B5A22F #2FB55F

square

#2F42B5 #B52F85 #B5A22F #2FB55F

split-complementary

#2F42B5 #B55F2F #85B52F

monochromatic

#161F54 #223084 #2F42B5 #5062D1 #808EDE

Accessibility & contrast

On white

8.18

#2F42B5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.57

#2F42B5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F42B5

8.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F42B5	#FFFFFF	#000000	##FFFFFF
##2F42B5	1.00	8.18	2.57	8.18
#FFFFFF	8.18	1.00	21.00	1.00
#000000	2.57	21.00	1.00	21.00
##FFFFFF	8.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B9

Deuteranopia (green-blind)

#0049B3

Tritanopia (blue-blind)

#006075

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #2f42b5;
/* rgb */ color: rgb(47, 66, 181);
/* oklch */ color: oklch(44.1% 0.182 269.8);

Tailwind

colors: {
  custom: {
    50: '#7b76cc',
    500: '#2f42b5',
    950: '#000000',
  },
}

SCSS

$custom: #2f42b5;
$custom-light: #7b76cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2f42b5",
  "rgb": {
    "r": 47,
    "g": 66,
    "b": 181
  },
  "hsl": {
    "h": 231.493,
    "s": 58.772,
    "l": 44.706
  },
  "oklch": {
    "l": 0.44096,
    "c": 0.18198,
    "h": 269.8
  },
  "luminance": 0.07837
}

Semantic roles & 50–950 ramp

primary

#2F42B5

secondary

#C7BC79

accent

#CC46E2

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #2F42B5

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

Preview Lab → · Contrast checker → · Palette generator →