#1647B3#1647B3

#1647B3 is a dark, vivid blue. Relative luminance 0.079; OKLCH L 43.9% C 0.179 H 262.9°. Best body text is #FFFFFF at 8.12:1 contrast (WCAG AA passes).

Color values

HEX	#1647B3
RGB	rgb(22, 71, 179)
HSL	hsl(221, 78%, 39%)
HSV	hsv(221, 88%, 70%)
CMYK	cmyk(87.7%, 60.3%, 0%, 29.8%)
CIE-LAB	lab(33.84, 26.74, -61.49)
CIE-LCH	lch(33.84, 67.06, 293.51°)
OKLab	oklab(43.94% -0.0222 -0.178)
OKLCH	oklch(43.94% 0.179 262.9)
XYZ	xyz(10.7179, 7.9304, 43.6049)
Luminance	0.0793 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1647B3 #B38216

analogous

#1696B3 #1647B3 #3416B3

triadic

#1647B3 #B31647 #47B316

tetradic

#1647B3 #B31696 #B38216 #16B334

square

#1647B3 #B31696 #B38216 #16B334

split-complementary

#1647B3 #B33416 #96B316

monochromatic

#091C46 #0F317C #1647B3 #225FE4 #5986EB

Accessibility & contrast

On white

8.12

#1647B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.59

#1647B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1647B3

8.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1647B3	#FFFFFF	#000000	##FFFFFF
##1647B3	1.00	8.12	2.59	8.12
#FFFFFF	8.12	1.00	21.00	1.00
#000000	2.59	21.00	1.00	21.00
##FFFFFF	8.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0057B7

Deuteranopia (green-blind)

#0049B1

Tritanopia (blue-blind)

#006376

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1647b3;
/* rgb */ color: rgb(22, 71, 179);
/* oklch */ color: oklch(43.9% 0.179 262.9);

Tailwind

colors: {
  custom: {
    50: '#7379cb',
    500: '#1647b3',
    950: '#000000',
  },
}

SCSS

$custom: #1647b3;
$custom-light: #7379cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1647b3",
  "rgb": {
    "r": 22,
    "g": 71,
    "b": 179
  },
  "hsl": {
    "h": 221.274,
    "s": 78.109,
    "l": 39.412
  },
  "oklch": {
    "l": 0.43936,
    "c": 0.1794,
    "h": 262.9
  },
  "luminance": 0.07932
}

Semantic roles & 50–950 ramp

primary

#1647B3

secondary

#CEA957

accent

#B833F5

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1647B3

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

Preview Lab → · Contrast checker → · Palette generator →