#2F42A9#2F42A9

#2F42A9 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.0% C 0.166 H 269.9°. Best body text is #FFFFFF at 8.49:1 contrast (WCAG AA passes).

Color values

HEX	#2F42A9
RGB	rgb(47, 66, 169)
HSL	hsl(231, 56%, 42%)
HSV	hsv(231, 72%, 66%)
CMYK	cmyk(72.2%, 60.9%, 0%, 33.7%)
CIE-LAB	lab(32.62, 28.64, -57.48)
CIE-LCH	lch(32.62, 64.22, 296.49°)
OKLab	oklab(43.03% -0.0002 -0.1659)
OKLCH	oklch(43.03% 0.166 269.9)
XYZ	xyz(10.2795, 7.3643, 38.4081)
Luminance	0.0736 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F42A9 #A9962F

analogous

#2F7FA9 #2F42A9 #592FA9

triadic

#2F42A9 #A92F42 #42A92F

tetradic

#2F42A9 #A92F7F #A9962F #2FA959

square

#2F42A9 #A92F7F #A9962F #2FA959

split-complementary

#2F42A9 #A9592F #7FA92F

monochromatic

#141D49 #222F79 #2F42A9 #495DCC #7988DA

Accessibility & contrast

On white

8.49

#2F42A9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#2F42A9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F42A9

8.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F42A9	#FFFFFF	#000000	##FFFFFF
##2F42A9	1.00	8.49	2.47	8.49
#FFFFFF	8.49	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053AC

Deuteranopia (green-blind)

#0047A7

Tritanopia (blue-blind)

#005C6F

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #2f42a9;
/* rgb */ color: rgb(47, 66, 169);
/* oklch */ color: oklch(43.0% 0.166 269.9);

Tailwind

colors: {
  custom: {
    50: '#7976c3',
    500: '#2f42a9',
    950: '#000000',
  },
}

SCSS

$custom: #2f42a9;
$custom-light: #7976c3;
$custom-dark: #000000;

JSON

{
  "hex": "#2f42a9",
  "rgb": {
    "r": 47,
    "g": 66,
    "b": 169
  },
  "hsl": {
    "h": 230.656,
    "s": 56.481,
    "l": 42.353
  },
  "oklch": {
    "l": 0.4303,
    "c": 0.1659,
    "h": 269.9
  },
  "luminance": 0.07365
}

Semantic roles & 50–950 ramp

primary

#2F42A9

secondary

#C2B572

accent

#C848E0

background

#F7F7FC

surface

#EEEDF8

border

#C9C8D1

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #2F42A9

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

Preview Lab → · Contrast checker → · Palette generator →