#3733A5#3733A5

#3733A5 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.5% C 0.177 H 276.6°. Best body text is #FFFFFF at 9.64:1 contrast (WCAG AA passes).

Color values

HEX	#3733A5
RGB	rgb(55, 51, 165)
HSL	hsl(242, 53%, 42%)
HSV	hsv(242, 69%, 65%)
CMYK	cmyk(66.7%, 69.1%, 0%, 35.3%)
CIE-LAB	lab(29.15, 37.83, -60.74)
CIE-LCH	lch(29.15, 71.56, 301.92°)
OKLab	oklab(40.51% 0.0203 -0.1753)
OKLCH	oklch(40.51% 0.177 276.6)
XYZ	xyz(9.5487, 5.8957, 36.2248)
Luminance	0.0590 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.37

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3733A5 #A1A533

analogous

#3368A5 #3733A5 #7033A5

triadic

#3733A5 #A53733 #33A537

tetradic

#3733A5 #A53368 #A1A533 #33A570

square

#3733A5 #A53368 #A1A533 #33A570

split-complementary

#3733A5 #A57033 #68A533

monochromatic

#181648 #272576 #3733A5 #514DC8 #7F7CD6

Accessibility & contrast

On white

9.64

#3733A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.18

#3733A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733A5

9.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733A5	#FFFFFF	#000000	##FFFFFF
##3733A5	1.00	9.64	2.18	9.64
#FFFFFF	9.64	1.00	21.00	1.00
#000000	2.18	21.00	1.00	21.00
##FFFFFF	9.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA8

Deuteranopia (green-blind)

#0040A3

Tritanopia (blue-blind)

#005268

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3733a5;
/* rgb */ color: rgb(55, 51, 165);
/* oklch */ color: oklch(40.5% 0.177 276.6);

Tailwind

colors: {
  custom: {
    50: '#7c6bc1',
    500: '#3733a5',
    950: '#000000',
  },
}

SCSS

$custom: #3733a5;
$custom-light: #7c6bc1;
$custom-dark: #000000;

JSON

{
  "hex": "#3733a5",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 165
  },
  "hsl": {
    "h": 242.105,
    "s": 52.778,
    "l": 42.353
  },
  "oklch": {
    "l": 0.4051,
    "c": 0.17651,
    "h": 276.6
  },
  "luminance": 0.05896
}

Semantic roles & 50–950 ramp

primary

#3733A5

secondary

#BDBF75

accent

#DC4CD7

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3733A5

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

Preview Lab → · Contrast checker → · Palette generator →