#1643A1#1643A1

#1643A1 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 41.5% C 0.160 H 262.5°. Best body text is #FFFFFF at 8.93:1 contrast (WCAG AA passes).

Color values

HEX	#1643A1
RGB	rgb(22, 67, 161)
HSL	hsl(221, 76%, 36%)
HSV	hsv(221, 86%, 63%)
CMYK	cmyk(86.3%, 58.4%, 0%, 36.9%)
CIE-LAB	lab(31.25, 22.28, -54.96)
CIE-LCH	lch(31.25, 59.30, 292.06°)
OKLab	oklab(41.52% -0.0209 -0.1589)
OKLCH	oklch(41.52% 0.16 262.5)
XYZ	xyz(8.7687, 6.7570, 34.5534)
Luminance	0.0676 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#1643A1 #A17416

analogous

#1688A1 #1643A1 #2F16A1

triadic

#1643A1 #A11643 #43A116

tetradic

#1643A1 #A11688 #A17416 #16A12F

square

#1643A1 #A11688 #A17416 #16A12F

split-complementary

#1643A1 #A12F16 #88A116

monochromatic

#071635 #0F2D6B #1643A1 #1D59D7 #4B7DE6

Accessibility & contrast

On white

8.93

#1643A1 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.35

#1643A1 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #1643A1

8.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##1643A1	#FFFFFF	#000000	##FFFFFF
##1643A1	1.00	8.93	2.35	8.93
#FFFFFF	8.93	1.00	21.00	1.00
#000000	2.35	21.00	1.00	21.00
##FFFFFF	8.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050A4

Deuteranopia (green-blind)

#00439F

Tritanopia (blue-blind)

#005B6B

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #1643a1;
/* rgb */ color: rgb(22, 67, 161);
/* oklch */ color: oklch(41.5% 0.160 262.5);

Tailwind

colors: {
  custom: {
    50: '#6f76be',
    500: '#1643a1',
    950: '#000000',
  },
}

SCSS

$custom: #1643a1;
$custom-light: #6f76be;
$custom-dark: #000000;

JSON

{
  "hex": "#1643a1",
  "rgb": {
    "r": 22,
    "g": 67,
    "b": 161
  },
  "hsl": {
    "h": 220.576,
    "s": 75.956,
    "l": 35.882
  },
  "oklch": {
    "l": 0.41524,
    "c": 0.16029,
    "h": 262.5
  },
  "luminance": 0.06758
}

Semantic roles & 50–950 ramp

primary

#1643A1

secondary

#C89F4B

accent

#B535F3

background

#F7F7FB

surface

#EDEDF7

border

#C8C8D0

text

#090812

muted

#7B7B81

Preview Lab

Preview with #1643A1

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

Preview Lab → · Contrast checker → · Palette generator →