#163B78#163B78

#163B78 is a dark, moderate blue. Relative luminance 0.047; OKLCH L 36.3% C 0.113 H 260.0°. Best body text is #FFFFFF at 10.88:1 contrast (WCAG AA passes).

Color values

HEX	#163B78
RGB	rgb(22, 59, 120)
HSL	hsl(217, 69%, 28%)
HSV	hsv(217, 82%, 47%)
CMYK	cmyk(81.7%, 50.8%, 0%, 52.9%)
CIE-LAB	lab(25.73, 10.98, -38.60)
CIE-LCH	lch(25.73, 40.13, 285.87°)
OKLab	oklab(36.32% -0.0196 -0.111)
OKLCH	oklch(36.32% 0.113 260)
XYZ	xyz(5.2838, 4.6539, 18.3855)
Luminance	0.0466 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#163B78 #785316

analogous

#166C78 #163B78 #221678

triadic

#163B78 #78163B #3B7816

tetradic

#163B78 #78166C #785316 #167822

square

#163B78 #78166C #785316 #167822

split-complementary

#163B78 #782216 #6C7816

monochromatic

#050D1A #0D2244 #163B78 #1F54AC #2F6FD9

Accessibility & contrast

On white

10.88

#163B78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.93

#163B78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #163B78

10.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##163B78	#FFFFFF	#000000	##FFFFFF
##163B78	1.00	10.88	1.93	10.88
#FFFFFF	10.88	1.00	21.00	1.00
#000000	1.93	21.00	1.00	21.00
##FFFFFF	10.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17427A

Deuteranopia (green-blind)

#003977

Tritanopia (blue-blind)

#004A53

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #163b78;
/* rgb */ color: rgb(22, 59, 120);
/* oklch */ color: oklch(36.3% 0.113 260.0);

Tailwind

colors: {
  custom: {
    50: '#64709f',
    500: '#163b78',
    950: '#000000',
  },
}

SCSS

$custom: #163b78;
$custom-light: #64709f;
$custom-dark: #000000;

JSON

{
  "hex": "#163b78",
  "rgb": {
    "r": 22,
    "g": 59,
    "b": 120
  },
  "hsl": {
    "h": 217.347,
    "s": 69.014,
    "l": 27.843
  },
  "oklch": {
    "l": 0.36323,
    "c": 0.11272,
    "h": 260
  },
  "luminance": 0.04655
}

Semantic roles & 50–950 ramp

primary

#163B78

secondary

#AD833C

accent

#A93CEC

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #163B78

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

Preview Lab → · Contrast checker → · Palette generator →