#333CB9#333CB9

#333CB9 is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.6% C 0.193 H 272.1°. Best body text is #FFFFFF at 8.44:1 contrast (WCAG AA passes).

Color values

HEX	#333CB9
RGB	rgb(51, 60, 185)
HSL	hsl(236, 57%, 46%)
HSV	hsv(236, 72%, 73%)
CMYK	cmyk(72.4%, 67.6%, 0%, 27.5%)
CIE-LAB	lab(32.78, 38.71, -66.73)
CIE-LCH	lch(32.78, 77.14, 300.12°)
OKLab	oklab(43.64% 0.0072 -0.1929)
OKLCH	oklch(43.64% 0.193 272.1)
XYZ	xyz(11.7351, 7.4371, 46.7066)
Luminance	0.0744 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#333CB9 #B9B033

analogous

#337FB9 #333CB9 #6D33B9

triadic

#333CB9 #B9333C #3CB933

tetradic

#333CB9 #B9337F #B9B033 #33B96D

square

#333CB9 #B9337F #B9B033 #33B96D

split-complementary

#333CB9 #B96D33 #7FB933

monochromatic

#191D59 #262C89 #333CB9 #5860D1 #888EDE

Accessibility & contrast

On white

8.44

#333CB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.49

#333CB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333CB9

8.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333CB9	#FFFFFF	#000000	##FFFFFF
##333CB9	1.00	8.44	2.49	8.44
#FFFFFF	8.44	1.00	21.00	1.00
#000000	2.49	21.00	1.00	21.00
##FFFFFF	8.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BD

Deuteranopia (green-blind)

#0047B7

Tritanopia (blue-blind)

#005E75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #333cb9;
/* rgb */ color: rgb(51, 60, 185);
/* oklch */ color: oklch(43.6% 0.193 272.1);

Tailwind

colors: {
  custom: {
    50: '#7e72cf',
    500: '#333cb9',
    950: '#000000',
  },
}

SCSS

$custom: #333cb9;
$custom-light: #7e72cf;
$custom-dark: #000000;

JSON

{
  "hex": "#333cb9",
  "rgb": {
    "r": 51,
    "g": 60,
    "b": 185
  },
  "hsl": {
    "h": 235.97,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43637,
    "c": 0.19307,
    "h": 272.1
  },
  "luminance": 0.07438
}

Semantic roles & 50–950 ramp

primary

#333CB9

secondary

#C8C380

accent

#D648E0

background

#F8F6FC

surface

#F0ECF9

border

#CBC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #333CB9

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

Preview Lab → · Contrast checker → · Palette generator →