#1644B3#1644B3

#1644B3 is a dark, vivid blue. Relative luminance 0.076; OKLCH L 43.3% C 0.183 H 263.5°. Best body text is #FFFFFF at 8.36:1 contrast (WCAG AA passes).

Color values

HEX	#1644B3
RGB	rgb(22, 68, 179)
HSL	hsl(222, 78%, 39%)
HSV	hsv(222, 88%, 70%)
CMYK	cmyk(87.7%, 62%, 0%, 29.8%)
CIE-LAB	lab(33.05, 28.75, -62.79)
CIE-LCH	lch(33.05, 69.06, 294.60°)
OKLab	oklab(43.34% -0.0207 -0.1819)
OKLCH	oklch(43.34% 0.183 263.5)
XYZ	xyz(10.5318, 7.5581, 43.5429)
Luminance	0.0756 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1644B3 #B38516

analogous

#1693B3 #1644B3 #3616B3

triadic

#1644B3 #B31644 #44B316

tetradic

#1644B3 #B31693 #B38516 #16B336

square

#1644B3 #B31693 #B38516 #16B336

split-complementary

#1644B3 #B33616 #93B316

monochromatic

#091B46 #0F2F7C #1644B3 #225BE4 #5984EB

Accessibility & contrast

On white

8.36

#1644B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.51

#1644B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1644B3

8.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1644B3	#FFFFFF	#000000	##FFFFFF
##1644B3	1.00	8.36	2.51	8.36
#FFFFFF	8.36	1.00	21.00	1.00
#000000	2.51	21.00	1.00	21.00
##FFFFFF	8.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0055B7

Deuteranopia (green-blind)

#0047B1

Tritanopia (blue-blind)

#006175

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1644b3;
/* rgb */ color: rgb(22, 68, 179);
/* oklch */ color: oklch(43.3% 0.183 263.5);

Tailwind

colors: {
  custom: {
    50: '#7477cb',
    500: '#1644b3',
    950: '#000000',
  },
}

SCSS

$custom: #1644b3;
$custom-light: #7477cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1644b3",
  "rgb": {
    "r": 22,
    "g": 68,
    "b": 179
  },
  "hsl": {
    "h": 222.42,
    "s": 78.109,
    "l": 39.412
  },
  "oklch": {
    "l": 0.43344,
    "c": 0.18303,
    "h": 263.5
  },
  "luminance": 0.07559
}

Semantic roles & 50–950 ramp

primary

#1644B3

secondary

#CEAB57

accent

#BC33F5

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1644B3

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

Preview Lab → · Contrast checker → · Palette generator →