#333DB9#333DB9

#333DB9 is a dark, vivid blue. Relative luminance 0.075; OKLCH L 43.8% C 0.192 H 271.9°. Best body text is #FFFFFF at 8.37:1 contrast (WCAG AA passes).

Color values

HEX	#333DB9
RGB	rgb(51, 61, 185)
HSL	hsl(236, 57%, 46%)
HSV	hsv(236, 72%, 73%)
CMYK	cmyk(72.4%, 67%, 0%, 27.5%)
CIE-LAB	lab(33.01, 38.09, -66.35)
CIE-LCH	lch(33.01, 76.51, 299.86°)
OKLab	oklab(43.8% 0.0065 -0.1918)
OKLCH	oklch(43.8% 0.192 271.9)
XYZ	xyz(11.7880, 7.5429, 46.7242)
Luminance	0.0754 (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

#333DB9 #B9AF33

analogous

#3380B9 #333DB9 #6C33B9

triadic

#333DB9 #B9333D #3DB933

tetradic

#333DB9 #B93380 #B9AF33 #33B96C

square

#333DB9 #B93380 #B9AF33 #33B96C

split-complementary

#333DB9 #B96C33 #80B933

monochromatic

#191D59 #262D89 #333DB9 #5861D1 #888FDE

Accessibility & contrast

On white

8.37

#333DB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#333DB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333DB9

8.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333DB9	#FFFFFF	#000000	##FFFFFF
##333DB9	1.00	8.37	2.51	8.37
#FFFFFF	8.37	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0054BD

Deuteranopia (green-blind)

#0047B7

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #333db9;
/* rgb */ color: rgb(51, 61, 185);
/* oklch */ color: oklch(43.8% 0.192 271.9);

Tailwind

colors: {
  custom: {
    50: '#7e73cf',
    500: '#333db9',
    950: '#000000',
  },
}

SCSS

$custom: #333db9;
$custom-light: #7e73cf;
$custom-dark: #000000;

JSON

{
  "hex": "#333db9",
  "rgb": {
    "r": 51,
    "g": 61,
    "b": 185
  },
  "hsl": {
    "h": 235.522,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.43804,
    "c": 0.19194,
    "h": 271.9
  },
  "luminance": 0.07544
}

Semantic roles & 50–950 ramp

primary

#333DB9

secondary

#C8C380

accent

#D548E0

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #333DB9

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

Preview Lab → · Contrast checker → · Palette generator →