#333AAF#333AAF

#333AAF is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.4% C 0.182 H 273.0°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#333AAF
RGB	rgb(51, 58, 175)
HSL	hsl(237, 55%, 44%)
HSV	hsv(237, 71%, 69%)
CMYK	cmyk(70.9%, 66.9%, 0%, 31.4%)
CIE-LAB	lab(31.40, 36.45, -63.05)
CIE-LCH	lch(31.40, 72.83, 300.03°)
OKLab	oklab(42.36% 0.0094 -0.1822)
OKLCH	oklch(42.36% 0.182 273)
XYZ	xyz(10.6136, 6.8240, 41.3070)
Luminance	0.0683 (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

#333AAF #AFA833

analogous

#3378AF #333AAF #6A33AF

triadic

#333AAF #AF333A #3AAF33

tetradic

#333AAF #AF3378 #AFA833 #33AF6A

square

#333AAF #AF3378 #AFA833 #33AF6A

split-complementary

#333AAF #AF6A33 #78AF33

monochromatic

#171B50 #252A80 #333AAF #5259CD #8287DB

Accessibility & contrast

On white

8.88

#333AAF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#333AAF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #333AAF

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##333AAF	#FFFFFF	#000000	##FFFFFF
##333AAF	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B3

Deuteranopia (green-blind)

#0044AD

Tritanopia (blue-blind)

#00596F

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #333aaf;
/* rgb */ color: rgb(51, 58, 175);
/* oklch */ color: oklch(42.4% 0.182 273.0);

Tailwind

colors: {
  custom: {
    50: '#7c70c8',
    500: '#333aaf',
    950: '#000000',
  },
}

SCSS

$custom: #333aaf;
$custom-light: #7c70c8;
$custom-dark: #000000;

JSON

{
  "hex": "#333aaf",
  "rgb": {
    "r": 51,
    "g": 58,
    "b": 175
  },
  "hsl": {
    "h": 236.613,
    "s": 54.867,
    "l": 44.314
  },
  "oklch": {
    "l": 0.42355,
    "c": 0.18244,
    "h": 273
  },
  "luminance": 0.06825
}

Semantic roles & 50–950 ramp

primary

#333AAF

secondary

#C4C07A

accent

#D64ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #333AAF

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

Preview Lab → · Contrast checker → · Palette generator →