#333BB4#333BB4

#333BB4 is a dark, vivid blue. Relative luminance 0.071; OKLCH L 43.0% C 0.188 H 272.5°. Best body text is #FFFFFF at 8.66:1 contrast (WCAG AA passes).

Color values

HEX	#333BB4
RGB	rgb(51, 59, 180)
HSL	hsl(236, 56%, 45%)
HSV	hsv(236, 72%, 71%)
CMYK	cmyk(71.7%, 67.2%, 0%, 29.4%)
CIE-LAB	lab(32.09, 37.58, -64.90)
CIE-LCH	lch(32.09, 74.99, 300.07°)
OKLab	oklab(43% 0.0083 -0.1876)
OKLCH	oklch(43% 0.188 272.5)
XYZ	xyz(11.1647, 7.1259, 43.9582)
Luminance	0.0713 (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

#333BB4 #B4AC33

analogous

#337BB4 #333BB4 #6B33B4

triadic

#333BB4 #B4333B #3BB433

tetradic

#333BB4 #B4337B #B4AC33 #33B46B

square

#333BB4 #B4337B #B4AC33 #33B46B

split-complementary

#333BB4 #B46B33 #7BB433

monochromatic

#181C55 #252B84 #333BB4 #555DCF #858ADC

Accessibility & contrast

On white

8.66

#333BB4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.43

#333BB4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333BB4

8.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333BB4	#FFFFFF	#000000	##FFFFFF
##333BB4	1.00	8.66	2.43	8.66
#FFFFFF	8.66	1.00	21.00	1.00
#000000	2.43	21.00	1.00	21.00
##FFFFFF	8.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052B8

Deuteranopia (green-blind)

#0045B2

Tritanopia (blue-blind)

#005B72

Achromatopsia (no color)

#4B4B4B

Design tokens & code

CSS

--color: #333bb4;
/* rgb */ color: rgb(51, 59, 180);
/* oklch */ color: oklch(43.0% 0.188 272.5);

Tailwind

colors: {
  custom: {
    50: '#7d71cc',
    500: '#333bb4',
    950: '#000000',
  },
}

SCSS

$custom: #333bb4;
$custom-light: #7d71cc;
$custom-dark: #000000;

JSON

{
  "hex": "#333bb4",
  "rgb": {
    "r": 51,
    "g": 59,
    "b": 180
  },
  "hsl": {
    "h": 236.279,
    "s": 55.844,
    "l": 45.294
  },
  "oklch": {
    "l": 0.42996,
    "c": 0.18777,
    "h": 272.5
  },
  "luminance": 0.07127
}

Semantic roles & 50–950 ramp

primary

#333BB4

secondary

#C6C17D

accent

#D649DF

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0813

muted

#7C7B82

Preview Lab

Preview with #333BB4

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

Preview Lab → · Contrast checker → · Palette generator →