#333FB7#333FB7

#333FB7 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 44.0% C 0.187 H 271.7°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#333FB7
RGB	rgb(51, 63, 183)
HSL	hsl(235, 56%, 46%)
HSV	hsv(235, 72%, 72%)
CMYK	cmyk(72.1%, 65.6%, 0%, 28.2%)
CIE-LAB	lab(33.30, 36.13, -64.70)
CIE-LCH	lch(33.30, 74.10, 299.18°)
OKLab	oklab(43.96% 0.0054 -0.187)
OKLCH	oklch(43.96% 0.187 271.7)
XYZ	xyz(11.6871, 7.6765, 45.6564)
Luminance	0.0768 (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

#333FB7 #B7AB33

analogous

#3381B7 #333FB7 #6933B7

triadic

#333FB7 #B7333F #3FB733

tetradic

#333FB7 #B73381 #B7AB33 #33B769

square

#333FB7 #B73381 #B7AB33 #33B769

split-complementary

#333FB7 #B76933 #81B733

monochromatic

#181E57 #262F87 #333FB7 #5762D0 #878FDE

Accessibility & contrast

On white

8.28

#333FB7 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#333FB7 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FB7

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FB7	#FFFFFF	#000000	##FFFFFF
##333FB7	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BB

Deuteranopia (green-blind)

#0048B5

Tritanopia (blue-blind)

#005F75

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #333fb7;
/* rgb */ color: rgb(51, 63, 183);
/* oklch */ color: oklch(44.0% 0.187 271.7);

Tailwind

colors: {
  custom: {
    50: '#7e74ce',
    500: '#333fb7',
    950: '#000000',
  },
}

SCSS

$custom: #333fb7;
$custom-light: #7e74ce;
$custom-dark: #000000;

JSON

{
  "hex": "#333fb7",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 183
  },
  "hsl": {
    "h": 234.545,
    "s": 56.41,
    "l": 45.882
  },
  "oklch": {
    "l": 0.43959,
    "c": 0.18706,
    "h": 271.7
  },
  "luminance": 0.07678
}

Semantic roles & 50–950 ramp

primary

#333FB7

secondary

#C7C17F

accent

#D248E0

background

#F8F7FC

surface

#EFEDF9

border

#CAC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #333FB7

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

Preview Lab → · Contrast checker → · Palette generator →