#1648B3#1648B3

#1648B3 is a dark, vivid blue. Relative luminance 0.081; OKLCH L 44.1% C 0.178 H 262.7°. Best body text is #FFFFFF at 8.04:1 contrast (WCAG AA passes).

Color values

HEX	#1648B3
RGB	rgb(22, 72, 179)
HSL	hsl(221, 78%, 39%)
HSV	hsv(221, 88%, 70%)
CMYK	cmyk(87.7%, 59.8%, 0%, 29.8%)
CIE-LAB	lab(34.10, 26.07, -61.06)
CIE-LCH	lch(34.10, 66.39, 293.12°)
OKLab	oklab(44.14% -0.0228 -0.1767)
OKLCH	oklch(44.14% 0.178 262.7)
XYZ	xyz(10.7820, 8.0586, 43.6263)
Luminance	0.0806 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1648B3 #B38116

analogous

#1696B3 #1648B3 #3316B3

triadic

#1648B3 #B31648 #48B316

tetradic

#1648B3 #B31696 #B38116 #16B333

square

#1648B3 #B31696 #B38116 #16B333

split-complementary

#1648B3 #B33316 #96B316

monochromatic

#091C46 #0F327C #1648B3 #2260E4 #5987EB

Accessibility & contrast

On white

8.04

#1648B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.61

#1648B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1648B3

8.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1648B3	#FFFFFF	#000000	##FFFFFF
##1648B3	1.00	8.04	2.61	8.04
#FFFFFF	8.04	1.00	21.00	1.00
#000000	2.61	21.00	1.00	21.00
##FFFFFF	8.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0058B7

Deuteranopia (green-blind)

#0049B1

Tritanopia (blue-blind)

#006476

Achromatopsia (no color)

#505050

Design tokens & code

CSS

--color: #1648b3;
/* rgb */ color: rgb(22, 72, 179);
/* oklch */ color: oklch(44.1% 0.178 262.7);

Tailwind

colors: {
  custom: {
    50: '#737acb',
    500: '#1648b3',
    950: '#000000',
  },
}

SCSS

$custom: #1648b3;
$custom-light: #737acb;
$custom-dark: #000000;

JSON

{
  "hex": "#1648b3",
  "rgb": {
    "r": 22,
    "g": 72,
    "b": 179
  },
  "hsl": {
    "h": 220.892,
    "s": 78.109,
    "l": 39.412
  },
  "oklch": {
    "l": 0.44136,
    "c": 0.17817,
    "h": 262.7
  },
  "luminance": 0.0806
}

Semantic roles & 50–950 ramp

primary

#1648B3

secondary

#CEA857

accent

#B733F5

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0913

muted

#7C7B82

Preview Lab

Preview with #1648B3

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

Preview Lab → · Contrast checker → · Palette generator →