#333F99#333F99

#333F99 is a dark, vivid blue. Relative luminance 0.066; OKLCH L 41.3% C 0.146 H 272.5°. Best body text is #FFFFFF at 9.08:1 contrast (WCAG AA passes).

Color values

HEX	#333F99
RGB	rgb(51, 63, 153)
HSL	hsl(233, 50%, 40%)
HSV	hsv(233, 67%, 60%)
CMYK	cmyk(66.7%, 58.8%, 0%, 40%)
CIE-LAB	lab(30.78, 25.34, -50.82)
CIE-LCH	lch(30.78, 56.78, 296.50°)
OKLab	oklab(41.32% 0.0064 -0.1462)
OKLCH	oklch(41.32% 0.146 272.5)
XYZ	xyz(8.8906, 6.5579, 30.9281)
Luminance	0.0656 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333F99 #998D33

analogous

#337299 #333F99 #5A3399

triadic

#333F99 #99333F #3F9933

tetradic

#333F99 #993372 #998D33 #33995A

square

#333F99 #993372 #998D33 #33995A

split-complementary

#333F99 #995A33 #729933

monochromatic

#14193D #242C6B #333F99 #4756C2 #7580D1

Accessibility & contrast

On white

9.08

#333F99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.31

#333F99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333F99

9.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333F99	#FFFFFF	#000000	##FFFFFF
##333F99	1.00	9.08	2.31	9.08
#FFFFFF	9.08	1.00	21.00	1.00
#000000	2.31	21.00	1.00	21.00
##FFFFFF	9.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004D9C

Deuteranopia (green-blind)

#004497

Tritanopia (blue-blind)

#005565

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #333f99;
/* rgb */ color: rgb(51, 63, 153);
/* oklch */ color: oklch(41.3% 0.146 272.5);

Tailwind

colors: {
  custom: {
    50: '#7774b8',
    500: '#333f99',
    950: '#000000',
  },
}

SCSS

$custom: #333f99;
$custom-light: #7774b8;
$custom-dark: #000000;

JSON

{
  "hex": "#333f99",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 153
  },
  "hsl": {
    "h": 232.941,
    "s": 50,
    "l": 40
  },
  "oklch": {
    "l": 0.41317,
    "c": 0.14639,
    "h": 272.5
  },
  "luminance": 0.06559
}

Semantic roles & 50–950 ramp

primary

#333F99

secondary

#B9B16E

accent

#C94EDA

background

#F7F7FB

surface

#EEEDF6

border

#C9C8D0

text

#0A0811

muted

#7C7B80

Preview Lab

Preview with #333F99

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

Preview Lab → · Contrast checker → · Palette generator →