#166D8D#166D8D

#166D8D is a mid, moderate cyan. Relative luminance 0.130; OKLCH L 50.1% C 0.092 H 228.8°. Best body text is #FFFFFF at 5.82:1 contrast (WCAG AA passes).

Color values

HEX	#166D8D
RGB	rgb(22, 109, 141)
HSL	hsl(196, 73%, 32%)
HSV	hsv(196, 84%, 55%)
CMYK	cmyk(84.4%, 22.7%, 0%, 44.7%)
CIE-LAB	lab(42.81, -12.77, -24.49)
CIE-LCH	lch(42.81, 27.62, 242.46°)
OKLab	oklab(50.15% -0.0604 -0.0689)
OKLCH	oklch(50.15% 0.092 228.8)
XYZ	xyz(10.6052, 13.0296, 27.1502)
Luminance	0.1303 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#166D8D #8D3616

analogous

#168D71 #166D8D #16328D

triadic

#166D8D #8D166D #6D8D16

tetradic

#166D8D #71168D #8D3616 #328D16

square

#166D8D #71168D #8D3616 #328D16

split-complementary

#166D8D #8D1632 #8D7116

monochromatic

#051B23 #0E4458 #166D8D #1E96C2 #3DB5E1

Accessibility & contrast

On white

5.82

#166D8D on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.61

#166D8D on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #166D8D

5.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##166D8D	#FFFFFF	#000000	##FFFFFF
##166D8D	1.00	5.82	3.61	5.82
#FFFFFF	5.82	1.00	21.00	1.00
#000000	3.61	21.00	1.00	21.00
##FFFFFF	5.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C6B8F

Deuteranopia (green-blind)

#4D608D

Tritanopia (blue-blind)

#007678

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #166d8d;
/* rgb */ color: rgb(22, 109, 141);
/* oklch */ color: oklch(50.1% 0.092 228.8);

Tailwind

colors: {
  custom: {
    50: '#6a96ae',
    500: '#166d8d',
    950: '#000000',
  },
}

SCSS

$custom: #166d8d;
$custom-light: #6a96ae;
$custom-dark: #000000;

JSON

{
  "hex": "#166d8d",
  "rgb": {
    "r": 22,
    "g": 109,
    "b": 141
  },
  "hsl": {
    "h": 196.134,
    "s": 73.006,
    "l": 31.961
  },
  "oklch": {
    "l": 0.50146,
    "c": 0.09164,
    "h": 228.8
  },
  "luminance": 0.13031
}

Semantic roles & 50–950 ramp

primary

#166D8D

secondary

#C1613E

accent

#6938F0

background

#F6F9FA

surface

#ECF2F4

border

#C7CCCE

text

#080D10

muted

#7A7E7F

Preview Lab

Preview with #166D8D

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

Preview Lab → · Contrast checker → · Palette generator →