#333BBB#333BBB

#333BBB is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.7% C 0.197 H 272.2°. Best body text is #FFFFFF at 8.45:1 contrast (WCAG AA passes).

Color values

HEX	#333BBB
RGB	rgb(51, 59, 187)
HSL	hsl(236, 57%, 47%)
HSV	hsv(236, 73%, 73%)
CMYK	cmyk(72.7%, 68.4%, 0%, 26.7%)
CIE-LAB	lab(32.74, 40.01, -67.98)
CIE-LCH	lch(32.74, 78.88, 300.48°)
OKLab	oklab(43.66% 0.0075 -0.1966)
OKLCH	oklch(43.66% 0.197 272.2)
XYZ	xyz(11.8958, 7.4184, 47.8090)
Luminance	0.0742 (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

#333BBB #BBB333

analogous

#337FBB #333BBB #6F33BB

triadic

#333BBB #BB333B #3BBB33

tetradic

#333BBB #BB337F #BBB333 #33BB6F

square

#333BBB #BB337F #BBB333 #33BB6F

split-complementary

#333BBB #BB6F33 #7FBB33

monochromatic

#191D5B #262C8B #333BBB #5960D2 #898EDF

Accessibility & contrast

On white

8.45

#333BBB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.48

#333BBB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333BBB

8.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333BBB	#FFFFFF	#000000	##FFFFFF
##333BBB	1.00	8.45	2.48	8.45
#FFFFFF	8.45	1.00	21.00	1.00
#000000	2.48	21.00	1.00	21.00
##FFFFFF	8.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0053BF

Deuteranopia (green-blind)

#0047B9

Tritanopia (blue-blind)

#005E76

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #333bbb;
/* rgb */ color: rgb(51, 59, 187);
/* oklch */ color: oklch(43.7% 0.197 272.2);

Tailwind

colors: {
  custom: {
    50: '#7f71d1',
    500: '#333bbb',
    950: '#000000',
  },
}

SCSS

$custom: #333bbb;
$custom-light: #7f71d1;
$custom-dark: #000000;

JSON

{
  "hex": "#333bbb",
  "rgb": {
    "r": 51,
    "g": 59,
    "b": 187
  },
  "hsl": {
    "h": 236.471,
    "s": 57.143,
    "l": 46.667
  },
  "oklch": {
    "l": 0.43664,
    "c": 0.19673,
    "h": 272.2
  },
  "luminance": 0.0742
}

Semantic roles & 50–950 ramp

primary

#333BBB

secondary

#C9C581

accent

#D747E0

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0814

muted

#7D7B83

Preview Lab

Preview with #333BBB

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

Preview Lab → · Contrast checker → · Palette generator →