#333CB0#333CB0

#333CB0 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.8% C 0.181 H 272.5°. Best body text is #FFFFFF at 8.70:1 contrast (WCAG AA passes).

Color values

HEX	#333CB0
RGB	rgb(51, 60, 176)
HSL	hsl(236, 55%, 45%)
HSV	hsv(236, 71%, 69%)
CMYK	cmyk(71%, 65.9%, 0%, 31%)
CIE-LAB	lab(31.96, 35.55, -62.73)
CIE-LCH	lch(31.96, 72.10, 299.54°)
OKLab	oklab(42.79% 0.008 -0.1812)
OKLCH	oklch(42.79% 0.181 272.5)
XYZ	xyz(10.8149, 7.0691, 41.8604)
Luminance	0.0707 (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

#333CB0 #B0A733

analogous

#337BB0 #333CB0 #6933B0

triadic

#333CB0 #B0333C #3CB033

tetradic

#333CB0 #B0337B #B0A733 #33B069

square

#333CB0 #B0337B #B0A733 #33B069

split-complementary

#333CB0 #B06933 #7BB033

monochromatic

#181C51 #252C81 #333CB0 #535CCD #8289DB

Accessibility & contrast

On white

8.70

#333CB0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.41

#333CB0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333CB0

8.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333CB0	#FFFFFF	#000000	##FFFFFF
##333CB0	1.00	8.70	2.41	8.70
#FFFFFF	8.70	1.00	21.00	1.00
#000000	2.41	21.00	1.00	21.00
##FFFFFF	8.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B4

Deuteranopia (green-blind)

#0045AE

Tritanopia (blue-blind)

#005B70

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #333cb0;
/* rgb */ color: rgb(51, 60, 176);
/* oklch */ color: oklch(42.8% 0.181 272.5);

Tailwind

colors: {
  custom: {
    50: '#7c72c9',
    500: '#333cb0',
    950: '#000000',
  },
}

SCSS

$custom: #333cb0;
$custom-light: #7c72c9;
$custom-dark: #000000;

JSON

{
  "hex": "#333cb0",
  "rgb": {
    "r": 51,
    "g": 60,
    "b": 176
  },
  "hsl": {
    "h": 235.68,
    "s": 55.066,
    "l": 44.51
  },
  "oklch": {
    "l": 0.42791,
    "c": 0.18141,
    "h": 272.5
  },
  "luminance": 0.0707
}

Semantic roles & 50–950 ramp

primary

#333CB0

secondary

#C4BF7B

accent

#D449DE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333CB0

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

Preview Lab → · Contrast checker → · Palette generator →