#333FB9#333FB9

#333FB9 is a dark, vivid blue. Relative luminance 0.078; OKLCH L 44.1% C 0.190 H 271.6°. Best body text is #FFFFFF at 8.23:1 contrast (WCAG AA passes).

Color values

HEX	#333FB9
RGB	rgb(51, 63, 185)
HSL	hsl(235, 57%, 46%)
HSV	hsv(235, 72%, 73%)
CMYK	cmyk(72.4%, 65.9%, 0%, 27.5%)
CIE-LAB	lab(33.48, 36.84, -65.58)
CIE-LCH	lch(33.48, 75.22, 299.32°)
OKLab	oklab(44.14% 0.0053 -0.1896)
OKLCH	oklch(44.14% 0.19 271.6)
XYZ	xyz(11.8967, 7.7604, 46.7605)
Luminance	0.0776 (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

#333FB9 #B9AD33

analogous

#3382B9 #333FB9 #6A33B9

triadic

#333FB9 #B9333F #3FB933

tetradic

#333FB9 #B93382 #B9AD33 #33B96A

square

#333FB9 #B93382 #B9AD33 #33B96A

split-complementary

#333FB9 #B96A33 #82B933

monochromatic

#191E59 #262F89 #333FB9 #5863D1 #8890DE

Accessibility & contrast

On white

8.23

#333FB9 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.55

#333FB9 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FB9

8.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FB9	#FFFFFF	#000000	##FFFFFF
##333FB9	1.00	8.23	2.55	8.23
#FFFFFF	8.23	1.00	21.00	1.00
#000000	2.55	21.00	1.00	21.00
##FFFFFF	8.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055BD

Deuteranopia (green-blind)

#0048B7

Tritanopia (blue-blind)

#005F76

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #333fb9;
/* rgb */ color: rgb(51, 63, 185);
/* oklch */ color: oklch(44.1% 0.190 271.6);

Tailwind

colors: {
  custom: {
    50: '#7e74cf',
    500: '#333fb9',
    950: '#000000',
  },
}

SCSS

$custom: #333fb9;
$custom-light: #7e74cf;
$custom-dark: #000000;

JSON

{
  "hex": "#333fb9",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 185
  },
  "hsl": {
    "h": 234.627,
    "s": 56.78,
    "l": 46.275
  },
  "oklch": {
    "l": 0.44144,
    "c": 0.18965,
    "h": 271.6
  },
  "luminance": 0.07762
}

Semantic roles & 50–950 ramp

primary

#333FB9

secondary

#C8C280

accent

#D248E0

background

#F8F7FC

surface

#F0EDF9

border

#CBC8D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #333FB9

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

Preview Lab → · Contrast checker → · Palette generator →