#3337AD#3337AD

#3337AD is a dark, vivid blue. Relative luminance 0.065; OKLCH L 41.7% C 0.183 H 273.6°. Best body text is #FFFFFF at 9.17:1 contrast (WCAG AA passes).

Color values

HEX	#3337AD
RGB	rgb(51, 55, 173)
HSL	hsl(238, 54%, 44%)
HSV	hsv(238, 71%, 68%)
CMYK	cmyk(70.5%, 68.2%, 0%, 32.2%)
CIE-LAB	lab(30.53, 37.62, -63.30)
CIE-LCH	lch(30.53, 73.63, 300.72°)
OKLab	oklab(41.66% 0.0116 -0.1829)
OKLCH	oklch(41.66% 0.183 273.6)
XYZ	xyz(10.2717, 6.4523, 40.2312)
Luminance	0.0645 (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

#3337AD #ADA933

analogous

#3374AD #3337AD #6C33AD

triadic

#3337AD #AD3337 #37AD33

tetradic

#3337AD #AD3374 #ADA933 #33AD6C

square

#3337AD #AD3374 #ADA933 #33AD6C

split-complementary

#3337AD #AD6C33 #74AD33

monochromatic

#17194E #25287E #3337AD #5155CC #8184DA

Accessibility & contrast

On white

9.17

#3337AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.29

#3337AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3337AD

9.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3337AD	#FFFFFF	#000000	##FFFFFF
##3337AD	1.00	9.17	2.29	9.17
#FFFFFF	9.17	1.00	21.00	1.00
#000000	2.29	21.00	1.00	21.00
##FFFFFF	9.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004EB1

Deuteranopia (green-blind)

#0042AB

Tritanopia (blue-blind)

#00576D

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3337ad;
/* rgb */ color: rgb(51, 55, 173);
/* oklch */ color: oklch(41.7% 0.183 273.6);

Tailwind

colors: {
  custom: {
    50: '#7c6ec7',
    500: '#3337ad',
    950: '#000000',
  },
}

SCSS

$custom: #3337ad;
$custom-light: #7c6ec7;
$custom-dark: #000000;

JSON

{
  "hex": "#3337ad",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 173
  },
  "hsl": {
    "h": 238.033,
    "s": 54.464,
    "l": 43.922
  },
  "oklch": {
    "l": 0.41663,
    "c": 0.18329,
    "h": 273.6
  },
  "luminance": 0.06453
}

Semantic roles & 50–950 ramp

primary

#3337AD

secondary

#C3C079

accent

#D94ADE

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3337AD

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

Preview Lab → · Contrast checker → · Palette generator →