#166F81#166F81

#166F81 is a mid, moderate cyan. Relative luminance 0.131; OKLCH L 50.1% C 0.083 H 215.3°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#166F81
RGB	rgb(22, 111, 129)
HSL	hsl(190, 71%, 30%)
HSV	hsv(190, 83%, 51%)
CMYK	cmyk(82.9%, 14%, 0%, 49.4%)
CIE-LAB	lab(42.95, -18.23, -17.08)
CIE-LCH	lch(42.95, 24.98, 223.13°)
OKLab	oklab(50.09% -0.0673 -0.0477)
OKLCH	oklch(50.09% 0.083 215.3)
XYZ	xyz(9.9761, 13.1232, 22.7719)
Luminance	0.1312 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#166F81 #812816

analogous

#16815D #166F81 #163A81

triadic

#166F81 #81166F #6F8116

tetradic

#166F81 #5D1681 #812816 #3A8116

square

#166F81 #5D1681 #812816 #3A8116

split-complementary

#166F81 #81163A #815D16

monochromatic

#04161A #0D424D #166F81 #1F9CB5 #35C0DD

Accessibility & contrast

On white

5.79

#166F81 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.62

#166F81 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #166F81

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##166F81	#FFFFFF	#000000	##FFFFFF
##166F81	1.00	5.79	3.62	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.62	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#636B82

Deuteranopia (green-blind)

#546181

Tritanopia (blue-blind)

#007675

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #166f81;
/* rgb */ color: rgb(22, 111, 129);
/* oklch */ color: oklch(50.1% 0.083 215.3);

Tailwind

colors: {
  custom: {
    50: '#6898a5',
    500: '#166f81',
    950: '#000000',
  },
}

SCSS

$custom: #166f81;
$custom-light: #6898a5;
$custom-dark: #000000;

JSON

{
  "hex": "#166f81",
  "rgb": {
    "r": 22,
    "g": 111,
    "b": 129
  },
  "hsl": {
    "h": 190.093,
    "s": 70.861,
    "l": 29.608
  },
  "oklch": {
    "l": 0.50091,
    "c": 0.0825,
    "h": 215.3
  },
  "luminance": 0.13124
}

Semantic roles & 50–950 ramp

primary

#166F81

secondary

#B6513D

accent

#583AEE

background

#F6F9FA

surface

#ECF2F4

border

#C7CCCE

text

#070D0F

muted

#7A7E7F

Preview Lab

Preview with #166F81

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

Preview Lab → · Contrast checker → · Palette generator →