#166D8E#166D8E

#166D8E is a mid, moderate cyan. Relative luminance 0.131; OKLCH L 50.2% C 0.093 H 229.6°. Best body text is #FFFFFF at 5.81:1 contrast (WCAG AA passes).

Color values

HEX	#166D8E
RGB	rgb(22, 109, 142)
HSL	hsl(197, 73%, 32%)
HSV	hsv(197, 85%, 56%)
CMYK	cmyk(84.5%, 23.2%, 0%, 44.3%)
CIE-LAB	lab(42.85, -12.40, -25.02)
CIE-LCH	lch(42.85, 27.92, 243.64°)
OKLab	oklab(50.2% -0.06 -0.0704)
OKLCH	oklch(50.2% 0.093 229.6)
XYZ	xyz(10.6800, 13.0595, 27.5438)
Luminance	0.1306 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#166D8E #8E3716

analogous

#168E73 #166D8E #16318E

triadic

#166D8E #8E166D #6D8E16

tetradic

#166D8E #73168E #8E3716 #318E16

square

#166D8E #73168E #8E3716 #318E16

split-complementary

#166D8E #8E1631 #8E7316

monochromatic

#061C24 #0E4459 #166D8E #1E96C3 #3DB4E1

Accessibility & contrast

On white

5.81

#166D8E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#166D8E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #166D8E

5.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##166D8E	#FFFFFF	#000000	##FFFFFF
##166D8E	1.00	5.81	3.61	5.81
#FFFFFF	5.81	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C6B90

Deuteranopia (green-blind)

#4C608E

Tritanopia (blue-blind)

#007678

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #166d8e;
/* rgb */ color: rgb(22, 109, 142);
/* oklch */ color: oklch(50.2% 0.093 229.6);

Tailwind

colors: {
  custom: {
    50: '#6a96af',
    500: '#166d8e',
    950: '#000000',
  },
}

SCSS

$custom: #166d8e;
$custom-light: #6a96af;
$custom-dark: #000000;

JSON

{
  "hex": "#166d8e",
  "rgb": {
    "r": 22,
    "g": 109,
    "b": 142
  },
  "hsl": {
    "h": 196.5,
    "s": 73.171,
    "l": 32.157
  },
  "oklch": {
    "l": 0.50197,
    "c": 0.09254,
    "h": 229.6
  },
  "luminance": 0.13061
}

Semantic roles & 50–950 ramp

primary

#166D8E

secondary

#C1633F

accent

#6B38F0

background

#F6F9FA

surface

#ECF2F4

border

#C7CCCE

text

#080D10

muted

#7A7E7F

Preview Lab

Preview with #166D8E

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

Preview Lab → · Contrast checker → · Palette generator →