#333CB4#333CB4

#333CB4 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.2% C 0.187 H 272.3°. Best body text is #FFFFFF at 8.58:1 contrast (WCAG AA passes).

Color values

HEX	#333CB4
RGB	rgb(51, 60, 180)
HSL	hsl(236, 56%, 45%)
HSV	hsv(236, 72%, 71%)
CMYK	cmyk(71.7%, 66.7%, 0%, 29.4%)
CIE-LAB	lab(32.32, 36.96, -64.52)
CIE-LCH	lch(32.32, 74.35, 299.80°)
OKLab	oklab(43.17% 0.0076 -0.1865)
OKLCH	oklch(43.17% 0.187 272.3)
XYZ	xyz(11.2165, 7.2297, 43.9755)
Luminance	0.0723 (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

#333CB4 #B4AB33

analogous

#337CB4 #333CB4 #6A33B4

triadic

#333CB4 #B4333C #3CB433

tetradic

#333CB4 #B4337C #B4AB33 #33B46A

square

#333CB4 #B4337C #B4AB33 #33B46A

split-complementary

#333CB4 #B46A33 #7CB433

monochromatic

#181C55 #252C84 #333CB4 #555ECF #858BDC

Accessibility & contrast

On white

8.58

#333CB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.45

#333CB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333CB4

8.58:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333CB4	#FFFFFF	#000000	##FFFFFF
##333CB4	1.00	8.58	2.45	8.58
#FFFFFF	8.58	1.00	21.00	1.00
#000000	2.45	21.00	1.00	21.00
##FFFFFF	8.58	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B8

Deuteranopia (green-blind)

#0046B2

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #333cb4;
/* rgb */ color: rgb(51, 60, 180);
/* oklch */ color: oklch(43.2% 0.187 272.3);

Tailwind

colors: {
  custom: {
    50: '#7d72cc',
    500: '#333cb4',
    950: '#000000',
  },
}

SCSS

$custom: #333cb4;
$custom-light: #7d72cc;
$custom-dark: #000000;

JSON

{
  "hex": "#333cb4",
  "rgb": {
    "r": 51,
    "g": 60,
    "b": 180
  },
  "hsl": {
    "h": 235.814,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.43165,
    "c": 0.18663,
    "h": 272.3
  },
  "luminance": 0.07231
}

Semantic roles & 50–950 ramp

primary

#333CB4

secondary

#C6C17D

accent

#D549DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333CB4

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

Preview Lab → · Contrast checker → · Palette generator →