#333BB5#333BB5

#333BB5 is a dark, vivid blue. Relative luminance 0.072; OKLCH L 43.1% C 0.189 H 272.5°. Best body text is #FFFFFF at 8.63:1 contrast (WCAG AA passes).

Color values

HEX	#333BB5
RGB	rgb(51, 59, 181)
HSL	hsl(236, 56%, 45%)
HSV	hsv(236, 72%, 71%)
CMYK	cmyk(71.8%, 67.4%, 0%, 29%)
CIE-LAB	lab(32.18, 37.93, -65.34)
CIE-LCH	lch(32.18, 75.55, 300.13°)
OKLab	oklab(43.09% 0.0082 -0.1889)
OKLCH	oklch(43.09% 0.189 272.5)
XYZ	xyz(11.2669, 7.1668, 44.4967)
Luminance	0.0717 (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

#333BB5 #B5AD33

analogous

#337CB5 #333BB5 #6C33B5

triadic

#333BB5 #B5333B #3BB533

tetradic

#333BB5 #B5337C #B5AD33 #33B56C

square

#333BB5 #B5337C #B5AD33 #33B56C

split-complementary

#333BB5 #B56C33 #7CB533

monochromatic

#181C56 #262B85 #333BB5 #565DCF #868BDD

Accessibility & contrast

On white

8.63

#333BB5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#333BB5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333BB5

8.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333BB5	#FFFFFF	#000000	##FFFFFF
##333BB5	1.00	8.63	2.43	8.63
#FFFFFF	8.63	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B9

Deuteranopia (green-blind)

#0046B3

Tritanopia (blue-blind)

#005C73

Achromatopsia (no color)

#4C4C4C

Design tokens & code

CSS

--color: #333bb5;
/* rgb */ color: rgb(51, 59, 181);
/* oklch */ color: oklch(43.1% 0.189 272.5);

Tailwind

colors: {
  custom: {
    50: '#7d71cc',
    500: '#333bb5',
    950: '#000000',
  },
}

SCSS

$custom: #333bb5;
$custom-light: #7d71cc;
$custom-dark: #000000;

JSON

{
  "hex": "#333bb5",
  "rgb": {
    "r": 51,
    "g": 59,
    "b": 181
  },
  "hsl": {
    "h": 236.308,
    "s": 56.034,
    "l": 45.49
  },
  "oklch": {
    "l": 0.4309,
    "c": 0.18907,
    "h": 272.5
  },
  "luminance": 0.07168
}

Semantic roles & 50–950 ramp

primary

#333BB5

secondary

#C6C27D

accent

#D648DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0814

muted

#7C7B82

Preview Lab

Preview with #333BB5

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

Preview Lab → · Contrast checker → · Palette generator →