#333CB5#333CB5

#333CB5 is a dark, vivid blue. Relative luminance 0.073; OKLCH L 43.3% C 0.188 H 272.3°. Best body text is #FFFFFF at 8.56:1 contrast (WCAG AA passes).

Color values

HEX	#333CB5
RGB	rgb(51, 60, 181)
HSL	hsl(236, 56%, 45%)
HSV	hsv(236, 72%, 71%)
CMYK	cmyk(71.8%, 66.9%, 0%, 29%)
CIE-LAB	lab(32.42, 37.31, -64.96)
CIE-LCH	lch(32.42, 74.91, 299.87°)
OKLab	oklab(43.26% 0.0075 -0.1878)
OKLCH	oklch(43.26% 0.188 272.3)
XYZ	xyz(11.3188, 7.2706, 44.5140)
Luminance	0.0727 (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

#333CB5 #B5AC33

analogous

#337DB5 #333CB5 #6B33B5

triadic

#333CB5 #B5333C #3CB533

tetradic

#333CB5 #B5337D #B5AC33 #33B56B

square

#333CB5 #B5337D #B5AC33 #33B56B

split-complementary

#333CB5 #B56B33 #7DB533

monochromatic

#181C56 #262C85 #333CB5 #565ECF #868CDD

Accessibility & contrast

On white

8.56

#333CB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#333CB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333CB5

8.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333CB5	#FFFFFF	#000000	##FFFFFF
##333CB5	1.00	8.56	2.45	8.56
#FFFFFF	8.56	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B9

Deuteranopia (green-blind)

#0046B3

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #333cb5;
/* rgb */ color: rgb(51, 60, 181);
/* oklch */ color: oklch(43.3% 0.188 272.3);

Tailwind

colors: {
  custom: {
    50: '#7d72cc',
    500: '#333cb5',
    950: '#000000',
  },
}

SCSS

$custom: #333cb5;
$custom-light: #7d72cc;
$custom-dark: #000000;

JSON

{
  "hex": "#333cb5",
  "rgb": {
    "r": 51,
    "g": 60,
    "b": 181
  },
  "hsl": {
    "h": 235.846,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.43259,
    "c": 0.18792,
    "h": 272.3
  },
  "luminance": 0.07272
}

Semantic roles & 50–950 ramp

primary

#333CB5

secondary

#C6C17D

accent

#D548DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #333CB5

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

Preview Lab → · Contrast checker → · Palette generator →