#333B99#333B99

#333B99 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.5% C 0.152 H 273.8°. Best body text is #FFFFFF at 9.43:1 contrast (WCAG AA passes).

Color values

HEX	#333B99
RGB	rgb(51, 59, 153)
HSL	hsl(235, 50%, 40%)
HSV	hsv(235, 67%, 60%)
CMYK	cmyk(66.7%, 61.4%, 0%, 40%)
CIE-LAB	lab(29.74, 27.98, -52.51)
CIE-LCH	lch(29.74, 59.50, 298.05°)
OKLab	oklab(40.55% 0.01 -0.1513)
OKLCH	oklch(40.55% 0.152 273.8)
XYZ	xyz(8.6771, 6.1309, 30.8569)
Luminance	0.0613 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333B99 #999133

analogous

#336E99 #333B99 #5E3399

triadic

#333B99 #99333B #3B9933

tetradic

#333B99 #99336E #999133 #33995E

square

#333B99 #99336E #999133 #33995E

split-complementary

#333B99 #995E33 #6E9933

monochromatic

#14183D #24296B #333B99 #4751C2 #757DD1

Accessibility & contrast

On white

9.43

#333B99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.23

#333B99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333B99

9.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333B99	#FFFFFF	#000000	##FFFFFF
##333B99	1.00	9.43	2.23	9.43
#FFFFFF	9.43	1.00	21.00	1.00
#000000	2.23	21.00	1.00	21.00
##FFFFFF	9.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9C

Deuteranopia (green-blind)

#004297

Tritanopia (blue-blind)

#005264

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #333b99;
/* rgb */ color: rgb(51, 59, 153);
/* oklch */ color: oklch(40.5% 0.152 273.8);

Tailwind

colors: {
  custom: {
    50: '#7771b8',
    500: '#333b99',
    950: '#000000',
  },
}

SCSS

$custom: #333b99;
$custom-light: #7771b8;
$custom-dark: #000000;

JSON

{
  "hex": "#333b99",
  "rgb": {
    "r": 51,
    "g": 59,
    "b": 153
  },
  "hsl": {
    "h": 235.294,
    "s": 50,
    "l": 40
  },
  "oklch": {
    "l": 0.40547,
    "c": 0.15159,
    "h": 273.8
  },
  "luminance": 0.06132
}

Semantic roles & 50–950 ramp

primary

#333B99

secondary

#B9B46E

accent

#CF4EDA

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #333B99

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

Preview Lab → · Contrast checker → · Palette generator →