#166E81#166E81

#166E81 is a mid, moderate cyan. Relative luminance 0.129; OKLCH L 49.8% C 0.083 H 216.6°. Best body text is #FFFFFF at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#166E81
RGB	rgb(22, 110, 129)
HSL	hsl(191, 71%, 30%)
HSV	hsv(191, 83%, 51%)
CMYK	cmyk(82.9%, 14.7%, 0%, 49.4%)
CIE-LAB	lab(42.62, -17.68, -17.58)
CIE-LCH	lch(42.62, 24.94, 224.84°)
OKLab	oklab(49.83% -0.0663 -0.0491)
OKLCH	oklch(49.83% 0.083 216.6)
XYZ	xyz(9.8676, 12.9062, 22.7357)
Luminance	0.1291 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#166E81 #812916

analogous

#16815F #166E81 #163981

triadic

#166E81 #81166E #6E8116

tetradic

#166E81 #5F1681 #812916 #398116

square

#166E81 #5F1681 #812916 #398116

split-complementary

#166E81 #811639 #815F16

monochromatic

#04161A #0D414D #166E81 #1F9BB5 #35BFDD

Accessibility & contrast

On white

5.86

#166E81 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.58

#166E81 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #166E81

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##166E81	#FFFFFF	#000000	##FFFFFF
##166E81	1.00	5.86	3.58	5.86
#FFFFFF	5.86	1.00	21.00	1.00
#000000	3.58	21.00	1.00	21.00
##FFFFFF	5.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#616A82

Deuteranopia (green-blind)

#536081

Tritanopia (blue-blind)

#007574

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #166e81;
/* rgb */ color: rgb(22, 110, 129);
/* oklch */ color: oklch(49.8% 0.083 216.6);

Tailwind

colors: {
  custom: {
    50: '#6897a5',
    500: '#166e81',
    950: '#000000',
  },
}

SCSS

$custom: #166e81;
$custom-light: #6897a5;
$custom-dark: #000000;

JSON

{
  "hex": "#166e81",
  "rgb": {
    "r": 22,
    "g": 110,
    "b": 129
  },
  "hsl": {
    "h": 190.654,
    "s": 70.861,
    "l": 29.608
  },
  "oklch": {
    "l": 0.49828,
    "c": 0.08251,
    "h": 216.6
  },
  "luminance": 0.12907
}

Semantic roles & 50–950 ramp

primary

#166E81

secondary

#B6533D

accent

#5A3AEE

background

#F6F9FA

surface

#ECF2F4

border

#C7CCCE

text

#070D0F

muted

#7A7E7F

Preview Lab

Preview with #166E81

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

Preview Lab → · Contrast checker → · Palette generator →