#3337AB#3337AB

#3337AB is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.5% C 0.181 H 273.8°. Best body text is #FFFFFF at 9.23:1 contrast (WCAG AA passes).

Color values

HEX	#3337AB
RGB	rgb(51, 55, 171)
HSL	hsl(238, 54%, 44%)
HSV	hsv(238, 70%, 67%)
CMYK	cmyk(70.2%, 67.8%, 0%, 32.9%)
CIE-LAB	lab(30.34, 36.92, -62.40)
CIE-LCH	lch(30.34, 72.51, 300.61°)
OKLab	oklab(41.47% 0.0118 -0.1803)
OKLCH	oklch(41.47% 0.181 273.8)
XYZ	xyz(10.0797, 6.3755, 39.2196)
Luminance	0.0638 (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

#3337AB #ABA733

analogous

#3373AB #3337AB #6B33AB

triadic

#3337AB #AB3337 #37AB33

tetradic

#3337AB #AB3373 #ABA733 #33AB6B

square

#3337AB #AB3373 #ABA733 #33AB6B

split-complementary

#3337AB #AB6B33 #73AB33

monochromatic

#17194D #25287C #3337AB #5054CB #7F82D9

Accessibility & contrast

On white

9.23

#3337AB on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3337AB on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3337AB

9.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3337AB	#FFFFFF	#000000	##FFFFFF
##3337AB	1.00	9.23	2.28	9.23
#FFFFFF	9.23	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DAF

Deuteranopia (green-blind)

#0042A9

Tritanopia (blue-blind)

#00566C

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3337ab;
/* rgb */ color: rgb(51, 55, 171);
/* oklch */ color: oklch(41.5% 0.181 273.8);

Tailwind

colors: {
  custom: {
    50: '#7b6ec5',
    500: '#3337ab',
    950: '#000000',
  },
}

SCSS

$custom: #3337ab;
$custom-light: #7b6ec5;
$custom-dark: #000000;

JSON

{
  "hex": "#3337ab",
  "rgb": {
    "r": 51,
    "g": 55,
    "b": 171
  },
  "hsl": {
    "h": 238,
    "s": 54.054,
    "l": 43.529
  },
  "oklch": {
    "l": 0.41472,
    "c": 0.18069,
    "h": 273.8
  },
  "luminance": 0.06376
}

Semantic roles & 50–950 ramp

primary

#3337AB

secondary

#C2C078

accent

#D94ADD

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3337AB

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

Preview Lab → · Contrast checker → · Palette generator →