#3647AD#3647AD

#3647AD is a dark, vivid blue. Relative luminance 0.083; OKLCH L 44.7% C 0.163 H 271.0°. Best body text is #FFFFFF at 7.89:1 contrast (WCAG AA passes).

Color values

HEX	#3647AD
RGB	rgb(54, 71, 173)
HSL	hsl(231, 52%, 45%)
HSV	hsv(231, 69%, 68%)
CMYK	cmyk(68.8%, 59%, 0%, 32.2%)
CIE-LAB	lab(34.61, 27.80, -56.61)
CIE-LCH	lch(34.61, 63.07, 296.16°)
OKLab	oklab(44.71% 0.003 -0.1631)
OKLCH	oklch(44.71% 0.163 271)
XYZ	xyz(11.3148, 8.3068, 40.5341)
Luminance	0.0831 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3647AD #AD9C36

analogous

#3682AD #3647AD #6136AD

triadic

#3647AD #AD3647 #47AD36

tetradic

#3647AD #AD3682 #AD9C36 #36AD61

square

#3647AD #AD3682 #AD9C36 #36AD61

split-complementary

#3647AD #AD6136 #82AD36

monochromatic

#192150 #27347E #3647AD #5667CA #8591D9

Accessibility & contrast

On white

7.89

#3647AD on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#3647AD on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3647AD

7.89:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3647AD	#FFFFFF	#000000	##FFFFFF
##3647AD	1.00	7.89	2.66	7.89
#FFFFFF	7.89	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.89	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B0

Deuteranopia (green-blind)

#004CAB

Tritanopia (blue-blind)

#006073

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #3647ad;
/* rgb */ color: rgb(54, 71, 173);
/* oklch */ color: oklch(44.7% 0.163 271.0);

Tailwind

colors: {
  custom: {
    50: '#7c7ac6',
    500: '#3647ad',
    950: '#000000',
  },
}

SCSS

$custom: #3647ad;
$custom-light: #7c7ac6;
$custom-dark: #000000;

JSON

{
  "hex": "#3647ad",
  "rgb": {
    "r": 54,
    "g": 71,
    "b": 173
  },
  "hsl": {
    "h": 231.429,
    "s": 52.423,
    "l": 44.51
  },
  "oklch": {
    "l": 0.44713,
    "c": 0.16314,
    "h": 271
  },
  "luminance": 0.08308
}

Semantic roles & 50–950 ramp

primary

#3647AD

secondary

#C2B87C

accent

#C74CDC

background

#F8F7FC

surface

#EFEDF8

border

#CAC8D1

text

#0B0913

muted

#7C7B82

Preview Lab

Preview with #3647AD

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

Preview Lab → · Contrast checker → · Palette generator →