#333FBF#333FBF

#333FBF is a dark, vivid blue. Relative luminance 0.080; OKLCH L 44.7% C 0.197 H 271.4°. Best body text is #FFFFFF at 8.06:1 contrast (WCAG AA passes).

Color values

HEX	#333FBF
RGB	rgb(51, 63, 191)
HSL	hsl(235, 58%, 47%)
HSV	hsv(235, 73%, 75%)
CMYK	cmyk(73.3%, 67%, 0%, 25.1%)
CIE-LAB	lab(34.02, 38.95, -68.23)
CIE-LCH	lch(34.02, 78.56, 299.72°)
OKLab	oklab(44.71% 0.0048 -0.1973)
OKLCH	oklch(44.71% 0.197 271.4)
XYZ	xyz(12.5435, 8.0191, 50.1669)
Luminance	0.0802 (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

#333FBF #BFB333

analogous

#3385BF #333FBF #6D33BF

triadic

#333FBF #BF333F #3FBF33

tetradic

#333FBF #BF3385 #BFB333 #33BF6D

square

#333FBF #BF3385 #BFB333 #33BF6D

split-complementary

#333FBF #BF6D33 #85BF33

monochromatic

#191F5E #262F8F #333FBF #5C66D3 #8C93E0

Accessibility & contrast

On white

8.06

#333FBF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.60

#333FBF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333FBF

8.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333FBF	#FFFFFF	#000000	##FFFFFF
##333FBF	1.00	8.06	2.60	8.06
#FFFFFF	8.06	1.00	21.00	1.00
#000000	2.60	21.00	1.00	21.00
##FFFFFF	8.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057C3

Deuteranopia (green-blind)

#0049BD

Tritanopia (blue-blind)

#006179

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #333fbf;
/* rgb */ color: rgb(51, 63, 191);
/* oklch */ color: oklch(44.7% 0.197 271.4);

Tailwind

colors: {
  custom: {
    50: '#7f74d3',
    500: '#333fbf',
    950: '#000000',
  },
}

SCSS

$custom: #333fbf;
$custom-light: #7f74d3;
$custom-dark: #000000;

JSON

{
  "hex": "#333fbf",
  "rgb": {
    "r": 51,
    "g": 63,
    "b": 191
  },
  "hsl": {
    "h": 234.857,
    "s": 57.851,
    "l": 47.451
  },
  "oklch": {
    "l": 0.44706,
    "c": 0.19737,
    "h": 271.4
  },
  "luminance": 0.0802
}

Semantic roles & 50–950 ramp

primary

#333FBF

secondary

#CBC483

accent

#D447E1

background

#F8F7FD

surface

#F0EDFA

border

#CBC8D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #333FBF

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

Preview Lab → · Contrast checker → · Palette generator →