#333FAA#333FAA

#333FAA is a dark, vivid blue. Relative luminance 0.072; OKLCH L 42.8% C 0.170 H 272.1°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#333FAA
RGB	rgb(51, 63, 170)
HSL	hsl(234, 54%, 43%)
HSV	hsv(234, 70%, 67%)
CMYK	cmyk(70%, 62.9%, 0%, 33.3%)
CIE-LAB	lab(32.17, 31.49, -58.81)
CIE-LCH	lch(32.17, 66.71, 298.17°)
OKLab	oklab(42.78% 0.0062 -0.1697)
OKLCH	oklch(42.78% 0.17 272.1)
XYZ	xyz(10.3960, 7.1601, 38.8566)
Luminance	0.0716 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333FAA #AA9E33

analogous

#337AAA #333FAA #6333AA

triadic

#333FAA #AA333F #3FAA33

tetradic

#333FAA #AA337A #AA9E33 #33AA63

square

#333FAA #AA337A #AA9E33 #33AA63

split-complementary

#333FAA #AA6333 #7AAA33

monochromatic

#171C4C #252E7B #333FAA #505CCA #7F88D9

Accessibility & contrast

On white

8.63

#333FAA on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#333FAA on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FAA

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FAA	#FFFFFF	#000000	##FFFFFF
##333FAA	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051AD

Deuteranopia (green-blind)

#0046A8

Tritanopia (blue-blind)

#005A6E

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #333faa;
/* rgb */ color: rgb(51, 63, 170);
/* oklch */ color: oklch(42.8% 0.170 272.1);

Tailwind

colors: {
  custom: {
    50: '#7b74c4',
    500: '#333faa',
    950: '#000000',
  },
}

SCSS

$custom: #333faa;
$custom-light: #7b74c4;
$custom-dark: #000000;

JSON

{
  "hex": "#333faa",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 170
  },
  "hsl": {
    "h": 233.95,
    "s": 53.846,
    "l": 43.333
  },
  "oklch": {
    "l": 0.4278,
    "c": 0.16985,
    "h": 272.1
  },
  "luminance": 0.07161
}

Semantic roles & 50–950 ramp

primary

#333FAA

secondary

#C2BA77

accent

#CE4BDD

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333FAA

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

Preview Lab → · Contrast checker → · Palette generator →