#2F33A5#2F33A5

#2F33A5 is a dark, vivid blue. Relative luminance 0.057; OKLCH L 40.0% C 0.178 H 273.4°. Best body text is #FFFFFF at 9.82:1 contrast (WCAG AA passes).

Color values

HEX	#2F33A5
RGB	rgb(47, 51, 165)
HSL	hsl(238, 56%, 42%)
HSV	hsv(238, 72%, 65%)
CMYK	cmyk(71.5%, 69.1%, 0%, 35.3%)
CIE-LAB	lab(28.61, 36.83, -61.64)
CIE-LCH	lch(28.61, 71.81, 300.86°)
OKLab	oklab(39.98% 0.0105 -0.1782)
OKLCH	oklch(39.98% 0.179 273.4)
XYZ	xyz(9.1454, 5.6877, 36.2059)
Luminance	0.0569 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F33A5 #A5A12F

analogous

#2F6EA5 #2F33A5 #662FA5

triadic

#2F33A5 #A52F33 #33A52F

tetradic

#2F33A5 #A52F6E #A5A12F #2FA566

square

#2F33A5 #A52F6E #A5A12F #2FA566

split-complementary

#2F33A5 #A5662F #6EA52F

monochromatic

#141646 #212475 #2F33A5 #474BCB #767AD8

Accessibility & contrast

On white

9.82

#2F33A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.14

#2F33A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #2F33A5

9.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F33A5	#FFFFFF	#000000	##FFFFFF
##2F33A5	1.00	9.82	2.14	9.82
#FFFFFF	9.82	1.00	21.00	1.00
#000000	2.14	21.00	1.00	21.00
##FFFFFF	9.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A8

Deuteranopia (green-blind)

#003EA3

Tritanopia (blue-blind)

#005268

Achromatopsia (no color)

#434343

Design tokens & code

CSS

--color: #2f33a5;
/* rgb */ color: rgb(47, 51, 165);
/* oklch */ color: oklch(40.0% 0.178 273.4);

Tailwind

colors: {
  custom: {
    50: '#796bc1',
    500: '#2f33a5',
    950: '#000000',
  },
}

SCSS

$custom: #2f33a5;
$custom-light: #796bc1;
$custom-dark: #000000;

JSON

{
  "hex": "#2f33a5",
  "rgb": {
    "r": 47,
    "g": 51,
    "b": 165
  },
  "hsl": {
    "h": 237.966,
    "s": 55.66,
    "l": 41.569
  },
  "oklch": {
    "l": 0.39982,
    "c": 0.1785,
    "h": 273.4
  },
  "luminance": 0.05689
}

Semantic roles & 50–950 ramp

primary

#2F33A5

secondary

#C0BD70

accent

#DA49DF

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #2F33A5

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

Preview Lab → · Contrast checker → · Palette generator →