#333C99#333C99

#333C99 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 40.7% C 0.150 H 273.5°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#333C99
RGB	rgb(51, 60, 153)
HSL	hsl(235, 50%, 40%)
HSV	hsv(235, 67%, 60%)
CMYK	cmyk(66.7%, 60.8%, 0%, 40%)
CIE-LAB	lab(30.00, 27.32, -52.09)
CIE-LCH	lch(30.00, 58.82, 297.68°)
OKLab	oklab(40.74% 0.0091 -0.15)
OKLCH	oklch(40.74% 0.15 273.5)
XYZ	xyz(8.7290, 6.2347, 30.8742)
Luminance	0.0624 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333C99 #999033

analogous

#336F99 #333C99 #5D3399

triadic

#333C99 #99333C #3C9933

tetradic

#333C99 #99336F #999033 #33995D

square

#333C99 #99336F #999033 #33995D

split-complementary

#333C99 #995D33 #6F9933

monochromatic

#14183D #242A6B #333C99 #4752C2 #757DD1

Accessibility & contrast

On white

9.35

#333C99 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#333C99 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333C99

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333C99	#FFFFFF	#000000	##FFFFFF
##333C99	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004B9C

Deuteranopia (green-blind)

#004297

Tritanopia (blue-blind)

#005364

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #333c99;
/* rgb */ color: rgb(51, 60, 153);
/* oklch */ color: oklch(40.7% 0.150 273.5);

Tailwind

colors: {
  custom: {
    50: '#7771b8',
    500: '#333c99',
    950: '#000000',
  },
}

SCSS

$custom: #333c99;
$custom-light: #7771b8;
$custom-dark: #000000;

JSON

{
  "hex": "#333c99",
  "rgb": {
    "r": 51,
    "g": 60,
    "b": 153
  },
  "hsl": {
    "h": 234.706,
    "s": 50,
    "l": 40
  },
  "oklch": {
    "l": 0.40737,
    "c": 0.1503,
    "h": 273.5
  },
  "luminance": 0.06235
}

Semantic roles & 50–950 ramp

primary

#333C99

secondary

#B9B36E

accent

#CD4EDA

background

#F7F6FB

surface

#EEECF6

border

#C9C7D0

text

#0A0711

muted

#7C7A80

Preview Lab

Preview with #333C99

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

Preview Lab → · Contrast checker → · Palette generator →