#3733A3#3733A3

#3733A3 is a dark, vivid blue. Relative luminance 0.058; OKLCH L 40.3% C 0.174 H 276.8°. Best body text is #FFFFFF at 9.70:1 contrast (WCAG AA passes).

Color values

HEX	#3733A3
RGB	rgb(55, 51, 163)
HSL	hsl(242, 52%, 42%)
HSV	hsv(242, 69%, 64%)
CMYK	cmyk(66.3%, 68.7%, 0%, 36.1%)
CIE-LAB	lab(28.96, 37.16, -59.84)
CIE-LCH	lch(28.96, 70.44, 301.84°)
OKLab	oklab(40.32% 0.0206 -0.1727)
OKLCH	oklch(40.32% 0.174 276.8)
XYZ	xyz(9.3681, 5.8234, 35.2736)
Luminance	0.0582 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3733A3 #9FA333

analogous

#3367A3 #3733A3 #6F33A3

triadic

#3733A3 #A33733 #33A337

tetradic

#3733A3 #A33367 #9FA333 #33A36F

square

#3733A3 #A33367 #9FA333 #33A36F

split-complementary

#3733A3 #A36F33 #67A333

monochromatic

#181646 #272474 #3733A3 #514CC7 #7E7BD6

Accessibility & contrast

On white

9.70

#3733A3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#3733A3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3733A3

9.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3733A3	#FFFFFF	#000000	##FFFFFF
##3733A3	1.00	9.70	2.16	9.70
#FFFFFF	9.70	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0049A6

Deuteranopia (green-blind)

#003FA1

Tritanopia (blue-blind)

#005167

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3733a3;
/* rgb */ color: rgb(55, 51, 163);
/* oklch */ color: oklch(40.3% 0.174 276.8);

Tailwind

colors: {
  custom: {
    50: '#7c6bbf',
    500: '#3733a3',
    950: '#000000',
  },
}

SCSS

$custom: #3733a3;
$custom-light: #7c6bbf;
$custom-dark: #000000;

JSON

{
  "hex": "#3733a3",
  "rgb": {
    "r": 55,
    "g": 51,
    "b": 163
  },
  "hsl": {
    "h": 242.143,
    "s": 52.336,
    "l": 41.961
  },
  "oklch": {
    "l": 0.4032,
    "c": 0.17391,
    "h": 276.8
  },
  "luminance": 0.05824
}

Semantic roles & 50–950 ramp

primary

#3733A3

secondary

#BCBE73

accent

#DC4CD7

background

#F8F6FB

surface

#EFEBF7

border

#CAC6D0

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3733A3

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

Preview Lab → · Contrast checker → · Palette generator →