#166D81#166D81

#166D81 is a mid, moderate cyan. Relative luminance 0.127; OKLCH L 49.6% C 0.083 H 217.8°. Best body text is #FFFFFF at 5.93:1 contrast (WCAG AA passes).

Color values

HEX	#166D81
RGB	rgb(22, 109, 129)
HSL	hsl(191, 71%, 30%)
HSV	hsv(191, 83%, 51%)
CMYK	cmyk(82.9%, 15.5%, 0%, 49.4%)
CIE-LAB	lab(42.29, -17.13, -18.08)
CIE-LCH	lch(42.29, 24.91, 226.55°)
OKLab	oklab(49.57% -0.0653 -0.0506)
OKLCH	oklch(49.57% 0.083 217.8)
XYZ	xyz(9.7603, 12.6916, 22.6999)
Luminance	0.1269 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#166D81 #812A16

analogous

#168160 #166D81 #163881

triadic

#166D81 #81166D #6D8116

tetradic

#166D81 #601681 #812A16 #388116

square

#166D81 #601681 #812A16 #388116

split-complementary

#166D81 #811638 #816016

monochromatic

#04161A #0D414D #166D81 #1F99B5 #35BDDD

Accessibility & contrast

On white

5.93

#166D81 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.54

#166D81 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #166D81

5.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##166D81	#FFFFFF	#000000	##FFFFFF
##166D81	1.00	5.93	3.54	5.93
#FFFFFF	5.93	1.00	21.00	1.00
#000000	3.54	21.00	1.00	21.00
##FFFFFF	5.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#606A82

Deuteranopia (green-blind)

#525F81

Tritanopia (blue-blind)

#007473

Achromatopsia (no color)

#646464

Design tokens & code

CSS

--color: #166d81;
/* rgb */ color: rgb(22, 109, 129);
/* oklch */ color: oklch(49.6% 0.083 217.8);

Tailwind

colors: {
  custom: {
    50: '#6897a5',
    500: '#166d81',
    950: '#000000',
  },
}

SCSS

$custom: #166d81;
$custom-light: #6897a5;
$custom-dark: #000000;

JSON

{
  "hex": "#166d81",
  "rgb": {
    "r": 22,
    "g": 109,
    "b": 129
  },
  "hsl": {
    "h": 191.215,
    "s": 70.861,
    "l": 29.608
  },
  "oklch": {
    "l": 0.49565,
    "c": 0.08256,
    "h": 217.8
  },
  "luminance": 0.12693
}

Semantic roles & 50–950 ramp

primary

#166D81

secondary

#B6543D

accent

#5C3AEE

background

#F6F9FA

surface

#ECF2F4

border

#C7CCCE

text

#070D0F

muted

#7A7E7F

Preview Lab

Preview with #166D81

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

Preview Lab → · Contrast checker → · Palette generator →