#2F42A5#2F42A5

#2F42A5 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.7% C 0.160 H 269.9°. Best body text is #FFFFFF at 8.59:1 contrast (WCAG AA passes).

Color values

HEX	#2F42A5
RGB	rgb(47, 66, 165)
HSL	hsl(230, 56%, 42%)
HSV	hsv(230, 72%, 65%)
CMYK	cmyk(71.5%, 60%, 0%, 35.3%)
CIE-LAB	lab(32.29, 27.16, -55.62)
CIE-LCH	lch(32.29, 61.90, 296.03°)
OKLab	oklab(42.68% -0.0002 -0.1604)
OKLCH	oklch(42.68% 0.16 269.9)
XYZ	xyz(9.9097, 7.2164, 36.4607)
Luminance	0.0722 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F42A5 #A5922F

analogous

#2F7DA5 #2F42A5 #572FA5

triadic

#2F42A5 #A52F42 #42A52F

tetradic

#2F42A5 #A52F7D #A5922F #2FA557

square

#2F42A5 #A52F7D #A5922F #2FA557

split-complementary

#2F42A5 #A5572F #7DA52F

monochromatic

#141C46 #212F75 #2F42A5 #475CCB #7686D8

Accessibility & contrast

On white

8.59

#2F42A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.44

#2F42A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F42A5

8.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F42A5	#FFFFFF	#000000	##FFFFFF
##2F42A5	1.00	8.59	2.44	8.59
#FFFFFF	8.59	1.00	21.00	1.00
#000000	2.44	21.00	1.00	21.00
##FFFFFF	8.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052A8

Deuteranopia (green-blind)

#0047A3

Tritanopia (blue-blind)

#005B6D

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #2f42a5;
/* rgb */ color: rgb(47, 66, 165);
/* oklch */ color: oklch(42.7% 0.160 269.9);

Tailwind

colors: {
  custom: {
    50: '#7876c0',
    500: '#2f42a5',
    950: '#000000',
  },
}

SCSS

$custom: #2f42a5;
$custom-light: #7876c0;
$custom-dark: #000000;

JSON

{
  "hex": "#2f42a5",
  "rgb": {
    "r": 47,
    "g": 66,
    "b": 165
  },
  "hsl": {
    "h": 230.339,
    "s": 55.66,
    "l": 41.569
  },
  "oklch": {
    "l": 0.42684,
    "c": 0.16042,
    "h": 269.9
  },
  "luminance": 0.07217
}

Semantic roles & 50–950 ramp

primary

#2F42A5

secondary

#C0B370

accent

#C749DF

background

#F7F7FB

surface

#EEEDF7

border

#C9C8D0

text

#0A0812

muted

#7C7B81

Preview Lab

Preview with #2F42A5

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

Preview Lab → · Contrast checker → · Palette generator →