#3733A4#3733A4

#3733A4 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.4% C 0.175 H 276.7°. Best body text is #FFFFFF at 9.67:1 contrast (WCAG AA passes).

Color values

HEX	#3733A4
RGB	rgb(55, 51, 164)
HSL	hsl(242, 53%, 42%)
HSV	hsv(242, 69%, 64%)
CMYK	cmyk(66.5%, 68.9%, 0%, 35.7%)
CIE-LAB	lab(29.05, 37.50, -60.29)
CIE-LCH	lch(29.05, 71.00, 301.88°)
OKLab	oklab(40.42% 0.0204 -0.174)
OKLCH	oklch(40.42% 0.175 276.7)
XYZ	xyz(9.4580, 5.8594, 35.7473)
Luminance	0.0586 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3733A4 #A0A433

analogous

#3368A4 #3733A4 #7033A4

triadic

#3733A4 #A43733 #33A437

tetradic

#3733A4 #A43368 #A0A433 #33A470

square

#3733A4 #A43368 #A0A433 #33A470

split-complementary

#3733A4 #A47033 #68A433

monochromatic

#181647 #272475 #3733A4 #514DC8 #7F7BD6

Accessibility & contrast

On white

9.67

#3733A4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.17

#3733A4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733A4

9.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733A4	#FFFFFF	#000000	##FFFFFF
##3733A4	1.00	9.67	2.17	9.67
#FFFFFF	9.67	1.00	21.00	1.00
#000000	2.17	21.00	1.00	21.00
##FFFFFF	9.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A7

Deuteranopia (green-blind)

#0040A2

Tritanopia (blue-blind)

#005167

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3733a4;
/* rgb */ color: rgb(55, 51, 164);
/* oklch */ color: oklch(40.4% 0.175 276.7);

Tailwind

colors: {
  custom: {
    50: '#7c6bc0',
    500: '#3733a4',
    950: '#000000',
  },
}

SCSS

$custom: #3733a4;
$custom-light: #7c6bc0;
$custom-dark: #000000;

JSON

{
  "hex": "#3733a4",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 164
  },
  "hsl": {
    "h": 242.124,
    "s": 52.558,
    "l": 42.157
  },
  "oklch": {
    "l": 0.40415,
    "c": 0.17521,
    "h": 276.7
  },
  "luminance": 0.0586
}

Semantic roles & 50–950 ramp

primary

#3733A4

secondary

#BCBF74

accent

#DC4CD7

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3733A4

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

Preview Lab → · Contrast checker → · Palette generator →