#1645B4#1645B4

#1645B4 is a dark, vivid blue. Relative luminance 0.077; OKLCH L 43.6% C 0.183 H 263.3°. Best body text is #FFFFFF at 8.25:1 contrast (WCAG AA passes).

Color values

HEX	#1645B4
RGB	rgb(22, 69, 180)
HSL	hsl(222, 78%, 40%)
HSV	hsv(222, 88%, 71%)
CMYK	cmyk(87.8%, 61.7%, 0%, 29.4%)
CIE-LAB	lab(33.39, 28.48, -62.81)
CIE-LCH	lch(33.39, 68.96, 294.39°)
OKLab	oklab(43.63% -0.0212 -0.1819)
OKLCH	oklch(43.63% 0.183 263.3)
XYZ	xyz(10.6943, 7.7207, 44.0978)
Luminance	0.0772 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1645B4 #B48516

analogous

#1694B4 #1645B4 #3616B4

triadic

#1645B4 #B41645 #45B416

tetradic

#1645B4 #B41694 #B48516 #16B436

square

#1645B4 #B41694 #B48516 #16B436

split-complementary

#1645B4 #B43616 #94B416

monochromatic

#091B47 #0F307D #1645B4 #235DE4 #5A85EB

Accessibility & contrast

On white

8.25

#1645B4 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.54

#1645B4 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1645B4

8.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1645B4	#FFFFFF	#000000	##FFFFFF
##1645B4	1.00	8.25	2.54	8.25
#FFFFFF	8.25	1.00	21.00	1.00
#000000	2.54	21.00	1.00	21.00
##FFFFFF	8.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0056B8

Deuteranopia (green-blind)

#0048B2

Tritanopia (blue-blind)

#006276

Achromatopsia (no color)

#4F4F4F

Design tokens & code

CSS

--color: #1645b4;
/* rgb */ color: rgb(22, 69, 180);
/* oklch */ color: oklch(43.6% 0.183 263.3);

Tailwind

colors: {
  custom: {
    50: '#7478cb',
    500: '#1645b4',
    950: '#000000',
  },
}

SCSS

$custom: #1645b4;
$custom-light: #7478cb;
$custom-dark: #000000;

JSON

{
  "hex": "#1645b4",
  "rgb": {
    "r": 22,
    "g": 69,
    "b": 180
  },
  "hsl": {
    "h": 222.152,
    "s": 78.218,
    "l": 39.608
  },
  "oklch": {
    "l": 0.43631,
    "c": 0.18313,
    "h": 263.3
  },
  "luminance": 0.07722
}

Semantic roles & 50–950 ramp

primary

#1645B4

secondary

#CEAB58

accent

#BB33F5

background

#F7F7FC

surface

#EEEDF9

border

#C9C8D2

text

#0A0813

muted

#7C7B82

Preview Lab

Preview with #1645B4

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

Preview Lab → · Contrast checker → · Palette generator →