#166A81#166A81

#166A81 is a mid, moderate cyan. Relative luminance 0.121; OKLCH L 48.8% C 0.083 H 221.4°. Best body text is #FFFFFF at 6.15:1 contrast (WCAG AA passes).

Color values

HEX	#166A81
RGB	rgb(22, 106, 129)
HSL	hsl(193, 71%, 30%)
HSV	hsv(193, 83%, 51%)
CMYK	cmyk(82.9%, 17.8%, 0%, 49.4%)
CIE-LAB	lab(41.32, -15.45, -19.59)
CIE-LCH	lch(41.32, 24.95, 231.74°)
OKLab	oklab(48.78% -0.0622 -0.0549)
OKLCH	oklch(48.78% 0.083 221.4)
XYZ	xyz(9.4457, 12.0624, 22.5951)
Luminance	0.1206 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#166A81 #812D16

analogous

#168163 #166A81 #163581

triadic

#166A81 #81166A #6A8116

tetradic

#166A81 #631681 #812D16 #358116

square

#166A81 #631681 #812D16 #358116

split-complementary

#166A81 #811635 #816316

monochromatic

#04151A #0D3F4D #166A81 #1F95B5 #35B8DD

Accessibility & contrast

On white

6.15

#166A81 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#166A81 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #166A81

6.15:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##166A81	#FFFFFF	#000000	##FFFFFF
##166A81	1.00	6.15	3.41	6.15
#FFFFFF	6.15	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.15	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5C6782

Deuteranopia (green-blind)

#4E5D81

Tritanopia (blue-blind)

#007171

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #166a81;
/* rgb */ color: rgb(22, 106, 129);
/* oklch */ color: oklch(48.8% 0.083 221.4);

Tailwind

colors: {
  custom: {
    50: '#6894a5',
    500: '#166a81',
    950: '#000000',
  },
}

SCSS

$custom: #166a81;
$custom-light: #6894a5;
$custom-dark: #000000;

JSON

{
  "hex": "#166a81",
  "rgb": {
    "r": 22,
    "g": 106,
    "b": 129
  },
  "hsl": {
    "h": 192.897,
    "s": 70.861,
    "l": 29.608
  },
  "oklch": {
    "l": 0.48777,
    "c": 0.08294,
    "h": 221.4
  },
  "luminance": 0.12064
}

Semantic roles & 50–950 ramp

primary

#166A81

secondary

#B6573D

accent

#613AEE

background

#F6F9FA

surface

#ECF1F4

border

#C7CBCE

text

#070D0F

muted

#7A7E7F

Preview Lab

Preview with #166A81

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

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