#3733AD#3733AD

#3733AD is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.3% C 0.187 H 275.9°. Best body text is #FFFFFF at 9.38:1 contrast (WCAG AA passes).

Color values

HEX	#3733AD
RGB	rgb(55, 51, 173)
HSL	hsl(242, 54%, 44%)
HSV	hsv(242, 71%, 68%)
CMYK	cmyk(68.2%, 70.5%, 0%, 32.2%)
CIE-LAB	lab(29.90, 40.52, -64.31)
CIE-LCH	lch(29.90, 76.02, 302.22°)
OKLab	oklab(41.28% 0.0191 -0.1858)
OKLCH	oklch(41.28% 0.187 275.9)
XYZ	xyz(10.2997, 6.1961, 40.1802)
Luminance	0.0620 (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

#3733AD #A9AD33

analogous

#336CAD #3733AD #7433AD

triadic

#3733AD #AD3733 #33AD37

tetradic

#3733AD #AD336C #A9AD33 #33AD74

square

#3733AD #AD336C #A9AD33 #33AD74

split-complementary

#3733AD #AD7433 #6CAD33

monochromatic

#19174E #28257E #3733AD #5551CC #8481DA

Accessibility & contrast

On white

9.38

#3733AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.24

#3733AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733AD

9.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733AD	#FFFFFF	#000000	##FFFFFF
##3733AD	1.00	9.38	2.24	9.38
#FFFFFF	9.38	1.00	21.00	1.00
#000000	2.24	21.00	1.00	21.00
##FFFFFF	9.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CB1

Deuteranopia (green-blind)

#0041AB

Tritanopia (blue-blind)

#00546C

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3733ad;
/* rgb */ color: rgb(55, 51, 173);
/* oklch */ color: oklch(41.3% 0.187 275.9);

Tailwind

colors: {
  custom: {
    50: '#7e6cc7',
    500: '#3733ad',
    950: '#000000',
  },
}

SCSS

$custom: #3733ad;
$custom-light: #7e6cc7;
$custom-dark: #000000;

JSON

{
  "hex": "#3733ad",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 173
  },
  "hsl": {
    "h": 241.967,
    "s": 54.464,
    "l": 43.922
  },
  "oklch": {
    "l": 0.41282,
    "c": 0.18676,
    "h": 275.9
  },
  "luminance": 0.06197
}

Semantic roles & 50–950 ramp

primary

#3733AD

secondary

#C0C379

accent

#DE4AD9

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3733AD

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

Preview Lab → · Contrast checker → · Palette generator →