#1645B3#1645B3

#1645B3 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.5% C 0.182 H 263.3°. Best body text is #FFFFFF at 8.28:1 contrast (WCAG AA passes).

Color values

HEX	#1645B3
RGB	rgb(22, 69, 179)
HSL	hsl(222, 78%, 39%)
HSV	hsv(222, 88%, 70%)
CMYK	cmyk(87.7%, 61.5%, 0%, 29.8%)
CIE-LAB	lab(33.31, 28.09, -62.36)
CIE-LCH	lch(33.31, 68.39, 294.25°)
OKLab	oklab(43.54% -0.0212 -0.1806)
OKLCH	oklch(43.54% 0.182 263.3)
XYZ	xyz(10.5928, 7.6801, 43.5632)
Luminance	0.0768 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1645B3 #B38416

analogous

#1694B3 #1645B3 #3616B3

triadic

#1645B3 #B31645 #45B316

tetradic

#1645B3 #B31694 #B38416 #16B336

square

#1645B3 #B31694 #B38416 #16B336

split-complementary

#1645B3 #B33616 #94B316

monochromatic

#091B46 #0F307C #1645B3 #225CE4 #5984EB

Accessibility & contrast

On white

8.28

#1645B3 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1645B3 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1645B3

8.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1645B3	#FFFFFF	#000000	##FFFFFF
##1645B3	1.00	8.28	2.54	8.28
#FFFFFF	8.28	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.28	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B7

Deuteranopia (green-blind)

#0047B1

Tritanopia (blue-blind)

#006275

Achromatopsia (no color)

#4E4E4E

Design tokens & code

CSS

--color: #1645b3;
/* rgb */ color: rgb(22, 69, 179);
/* oklch */ color: oklch(43.5% 0.182 263.3);

Tailwind

colors: {
  custom: {
    50: '#7378cb',
    500: '#1645b3',
    950: '#000000',
  },
}

SCSS

$custom: #1645b3;
$custom-light: #7378cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1645b3",
  "rgb": {
    "r": 22,
    "g": 69,
    "b": 179
  },
  "hsl": {
    "h": 222.038,
    "s": 78.109,
    "l": 39.412
  },
  "oklch": {
    "l": 0.4354,
    "c": 0.18182,
    "h": 263.3
  },
  "luminance": 0.07681
}

Semantic roles & 50–950 ramp

primary

#1645B3

secondary

#CEAA57

accent

#BB33F5

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1645B3

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

Preview Lab → · Contrast checker → · Palette generator →