#333FBC#333FBC

#333FBC is a dark, vivid blue. Relative luminance 0.079; OKLCH L 44.4% C 0.194 H 271.5°. Best body text is #FFFFFF at 8.15:1 contrast (WCAG AA passes).

Color values

HEX	#333FBC
RGB	rgb(51, 63, 188)
HSL	hsl(235, 57%, 47%)
HSV	hsv(235, 73%, 74%)
CMYK	cmyk(72.9%, 66.5%, 0%, 26.3%)
CIE-LAB	lab(33.75, 37.90, -66.91)
CIE-LCH	lch(33.75, 76.90, 299.53°)
OKLab	oklab(44.42% 0.005 -0.1935)
OKLCH	oklch(44.42% 0.194 271.5)
XYZ	xyz(12.2168, 7.8884, 48.4460)
Luminance	0.0789 (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

#333FBC #BCB033

analogous

#3383BC #333FBC #6C33BC

triadic

#333FBC #BC333F #3FBC33

tetradic

#333FBC #BC3383 #BCB033 #33BC6C

square

#333FBC #BC3383 #BCB033 #33BC6C

split-complementary

#333FBC #BC6C33 #83BC33

monochromatic

#191F5C #262F8C #333FBC #5A65D2 #8A92DF

Accessibility & contrast

On white

8.15

#333FBC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.58

#333FBC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FBC

8.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FBC	#FFFFFF	#000000	##FFFFFF
##333FBC	1.00	8.15	2.58	8.15
#FFFFFF	8.15	1.00	21.00	1.00
#000000	2.58	21.00	1.00	21.00
##FFFFFF	8.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056C0

Deuteranopia (green-blind)

#0049BA

Tritanopia (blue-blind)

#006078

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #333fbc;
/* rgb */ color: rgb(51, 63, 188);
/* oklch */ color: oklch(44.4% 0.194 271.5);

Tailwind

colors: {
  custom: {
    50: '#7f74d1',
    500: '#333fbc',
    950: '#000000',
  },
}

SCSS

$custom: #333fbc;
$custom-light: #7f74d1;
$custom-dark: #000000;

JSON

{
  "hex": "#333fbc",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 188
  },
  "hsl": {
    "h": 234.745,
    "s": 57.322,
    "l": 46.863
  },
  "oklch": {
    "l": 0.44424,
    "c": 0.19353,
    "h": 271.5
  },
  "luminance": 0.0789
}

Semantic roles & 50–950 ramp

primary

#333FBC

secondary

#C9C381

accent

#D347E1

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #333FBC

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

Preview Lab → · Contrast checker → · Palette generator →