#333BB3#333BB3

#333BB3 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 42.9% C 0.186 H 272.6°. Best body text is #FFFFFF at 8.69:1 contrast (WCAG AA passes).

Color values

HEX	#333BB3
RGB	rgb(51, 59, 179)
HSL	hsl(236, 56%, 45%)
HSV	hsv(236, 72%, 70%)
CMYK	cmyk(71.5%, 67%, 0%, 29.8%)
CIE-LAB	lab(32.00, 37.23, -64.46)
CIE-LCH	lch(32.00, 74.44, 300.01°)
OKLab	oklab(42.9% 0.0084 -0.1863)
OKLCH	oklch(42.9% 0.186 272.6)
XYZ	xyz(11.0632, 7.0853, 43.4236)
Luminance	0.0709 (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

#333BB3 #B3AB33

analogous

#337BB3 #333BB3 #6B33B3

triadic

#333BB3 #B3333B #3BB333

tetradic

#333BB3 #B3337B #B3AB33 #33B36B

square

#333BB3 #B3337B #B3AB33 #33B36B

split-complementary

#333BB3 #B36B33 #7BB333

monochromatic

#181C54 #252B83 #333BB3 #555CCE #848ADC

Accessibility & contrast

On white

8.69

#333BB3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.42

#333BB3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333BB3

8.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333BB3	#FFFFFF	#000000	##FFFFFF
##333BB3	1.00	8.69	2.42	8.69
#FFFFFF	8.69	1.00	21.00	1.00
#000000	2.42	21.00	1.00	21.00
##FFFFFF	8.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0051B7

Deuteranopia (green-blind)

#0045B1

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #333bb3;
/* rgb */ color: rgb(51, 59, 179);
/* oklch */ color: oklch(42.9% 0.186 272.6);

Tailwind

colors: {
  custom: {
    50: '#7d71cb',
    500: '#333bb3',
    950: '#000000',
  },
}

SCSS

$custom: #333bb3;
$custom-light: #7d71cb;
$custom-dark: #000000;

JSON

{
  "hex": "#333bb3",
  "rgb": {
    "r": 51,
    "g": 59,
    "b": 179
  },
  "hsl": {
    "h": 236.25,
    "s": 55.652,
    "l": 45.098
  },
  "oklch": {
    "l": 0.42901,
    "c": 0.18648,
    "h": 272.6
  },
  "luminance": 0.07086
}

Semantic roles & 50–950 ramp

primary

#333BB3

secondary

#C6C17C

accent

#D649DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333BB3

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

Preview Lab → · Contrast checker → · Palette generator →