#3733A6#3733A6

#3733A6 is a dark, vivid blue. Relative luminance 0.059; OKLCH L 40.6% C 0.178 H 276.5°. Best body text is #FFFFFF at 9.60:1 contrast (WCAG AA passes).

Color values

HEX	#3733A6
RGB	rgb(55, 51, 166)
HSL	hsl(242, 53%, 43%)
HSV	hsv(242, 69%, 65%)
CMYK	cmyk(66.9%, 69.3%, 0%, 34.9%)
CIE-LAB	lab(29.24, 38.17, -61.19)
CIE-LCH	lch(29.24, 72.12, 301.96°)
OKLab	oklab(40.61% 0.0201 -0.1767)
OKLCH	oklch(40.61% 0.178 276.5)
XYZ	xyz(9.6401, 5.9322, 36.7060)
Luminance	0.0593 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.26

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3733A6 #A2A633

analogous

#3368A6 #3733A6 #7133A6

triadic

#3733A6 #A63733 #33A637

tetradic

#3733A6 #A63368 #A2A633 #33A671

square

#3733A6 #A63368 #A2A633 #33A671

split-complementary

#3733A6 #A67133 #68A633

monochromatic

#181648 #272577 #3733A6 #524EC9 #807CD7

Accessibility & contrast

On white

9.60

#3733A6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.19

#3733A6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733A6

9.60:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733A6	#FFFFFF	#000000	##FFFFFF
##3733A6	1.00	9.60	2.19	9.60
#FFFFFF	9.60	1.00	21.00	1.00
#000000	2.19	21.00	1.00	21.00
##FFFFFF	9.60	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AAA

Deuteranopia (green-blind)

#0040A4

Tritanopia (blue-blind)

#005268

Achromatopsia (no color)

#454545

Design tokens & code

CSS

--color: #3733a6;
/* rgb */ color: rgb(55, 51, 166);
/* oklch */ color: oklch(40.6% 0.178 276.5);

Tailwind

colors: {
  custom: {
    50: '#7c6cc1',
    500: '#3733a6',
    950: '#000000',
  },
}

SCSS

$custom: #3733a6;
$custom-light: #7c6cc1;
$custom-dark: #000000;

JSON

{
  "hex": "#3733a6",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 166
  },
  "hsl": {
    "h": 242.087,
    "s": 52.995,
    "l": 42.549
  },
  "oklch": {
    "l": 0.40606,
    "c": 0.1778,
    "h": 276.5
  },
  "luminance": 0.05933
}

Semantic roles & 50–950 ramp

primary

#3733A6

secondary

#BDC075

accent

#DC4BD7

background

#F8F6FC

surface

#EFEBF8

border

#CAC6D1

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3733A6

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

Preview Lab → · Contrast checker → · Palette generator →