#3729B6#3729B6

#3729B6 is a dark, highly saturated blue. Relative luminance 0.058; OKLCH L 40.8% C 0.208 H 276.4°. Best body text is #FFFFFF at 9.74:1 contrast (WCAG AA passes).

Color values

HEX	#3729B6
RGB	rgb(55, 41, 182)
HSL	hsl(246, 63%, 44%)
HSV	hsv(246, 77%, 71%)
CMYK	cmyk(69.8%, 77.5%, 0%, 28.6%)
CIE-LAB	lab(28.84, 48.99, -71.44)
CIE-LCH	lch(28.84, 86.62, 304.44°)
OKLab	oklab(40.8% 0.023 -0.2065)
OKLCH	oklch(40.8% 0.208 276.4)
XYZ	xyz(10.8092, 5.7745, 44.7918)
Luminance	0.0578 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3729B6 #A8B629

analogous

#2961B6 #3729B6 #7D29B6

triadic

#3729B6 #B63729 #29B637

tetradic

#3729B6 #B62961 #A8B629 #29B67D

square

#3729B6 #B62961 #A8B629 #29B67D

split-complementary

#3729B6 #B67D29 #61B629

monochromatic

#191252 #281E84 #3729B6 #5547D5 #8379E1

Accessibility & contrast

On white

9.74

#3729B6 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.16

#3729B6 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3729B6

9.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3729B6	#FFFFFF	#000000	##FFFFFF
##3729B6	1.00	9.74	2.16	9.74
#FFFFFF	9.74	1.00	21.00	1.00
#000000	2.16	21.00	1.00	21.00
##FFFFFF	9.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004ABA

Deuteranopia (green-blind)

#003EB4

Tritanopia (blue-blind)

#00536F

Achromatopsia (no color)

#444444

Design tokens & code

CSS

--color: #3729b6;
/* rgb */ color: rgb(55, 41, 182);
/* oklch */ color: oklch(40.8% 0.208 276.4);

Tailwind

colors: {
  custom: {
    50: '#8166cd',
    500: '#3729b6',
    950: '#000000',
  },
}

SCSS

$custom: #3729b6;
$custom-light: #8166cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3729b6",
  "rgb": {
    "r": 55,
    "g": 41,
    "b": 182
  },
  "hsl": {
    "h": 245.957,
    "s": 63.229,
    "l": 43.725
  },
  "oklch": {
    "l": 0.40799,
    "c": 0.20778,
    "h": 276.4
  },
  "luminance": 0.05776
}

Semantic roles & 50–950 ramp

primary

#3729B6

secondary

#C0C972

accent

#E642D6

background

#F8F6FC

surface

#F0EBF9

border

#CBC6D2

text

#0C0614

muted

#7D7A82

Preview Lab

Preview with #3729B6

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

Preview Lab → · Contrast checker → · Palette generator →