#3733B2#3733B2

#3733B2 is a dark, vivid blue. Relative luminance 0.064; OKLCH L 41.8% C 0.193 H 275.4°. Best body text is #FFFFFF at 9.22:1 contrast (WCAG AA passes).

Color values

HEX	#3733B2
RGB	rgb(55, 51, 178)
HSL	hsl(242, 55%, 45%)
HSV	hsv(242, 71%, 70%)
CMYK	cmyk(69.1%, 71.3%, 0%, 30.2%)
CIE-LAB	lab(30.38, 42.19, -66.51)
CIE-LCH	lch(30.38, 78.76, 302.39°)
OKLab	oklab(41.77% 0.0183 -0.1922)
OKLCH	oklch(41.77% 0.193 275.4)
XYZ	xyz(10.7926, 6.3932, 42.7761)
Luminance	0.0639 (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

#3733B2 #AEB233

analogous

#336EB2 #3733B2 #7733B2

triadic

#3733B2 #B23733 #33B237

tetradic

#3733B2 #B2336E #AEB233 #33B277

square

#3733B2 #B2336E #AEB233 #33B277

split-complementary

#3733B2 #B27733 #6EB233

monochromatic

#1A1853 #282582 #3733B2 #5854CE #8684DC

Accessibility & contrast

On white

9.22

#3733B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.28

#3733B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733B2

9.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733B2	#FFFFFF	#000000	##FFFFFF
##3733B2	1.00	9.22	2.28	9.22
#FFFFFF	9.22	1.00	21.00	1.00
#000000	2.28	21.00	1.00	21.00
##FFFFFF	9.22	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004DB6

Deuteranopia (green-blind)

#0042B0

Tritanopia (blue-blind)

#00566F

Achromatopsia (no color)

#484848

Design tokens & code

CSS

--color: #3733b2;
/* rgb */ color: rgb(55, 51, 178);
/* oklch */ color: oklch(41.8% 0.193 275.4);

Tailwind

colors: {
  custom: {
    50: '#7f6cca',
    500: '#3733b2',
    950: '#000000',
  },
}

SCSS

$custom: #3733b2;
$custom-light: #7f6cca;
$custom-dark: #000000;

JSON

{
  "hex": "#3733b2",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 178
  },
  "hsl": {
    "h": 241.89,
    "s": 55.459,
    "l": 44.902
  },
  "oklch": {
    "l": 0.41773,
    "c": 0.19306,
    "h": 275.4
  },
  "luminance": 0.06394
}

Semantic roles & 50–950 ramp

primary

#3733B2

secondary

#C3C57C

accent

#DF49DA

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3733B2

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

Preview Lab → · Contrast checker → · Palette generator →