#178E9D#178E9D

#178E9D is a mid, moderate teal. Relative luminance 0.220; OKLCH L 59.4% C 0.098 H 208.5°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#178E9D
RGB	rgb(23, 142, 157)
HSL	hsl(187, 74%, 35%)
HSV	hsv(187, 85%, 62%)
CMYK	cmyk(85.4%, 9.6%, 0%, 38.4%)
CIE-LAB	lab(53.98, -24.95, -16.71)
CIE-LCH	lch(53.98, 30.03, 213.80°)
OKLab	oklab(59.36% -0.0858 -0.0466)
OKLCH	oklch(59.36% 0.098 208.5)
XYZ	xyz(16.1094, 21.9604, 35.2815)
Luminance	0.2196 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178E9D #9D2617

analogous

#179D69 #178E9D #174B9D

triadic

#178E9D #9D178E #8E9D17

tetradic

#178E9D #69179D #9D2617 #4B9D17

square

#178E9D #69179D #9D2617 #4B9D17

split-complementary

#178E9D #9D174B #9D6917

monochromatic

#072D32 #0F5E68 #178E9D #1FBED2 #4AD3E4

Accessibility & contrast

On white

3.89

#178E9D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#178E9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178E9D

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178E9D	#FFFFFF	#000000	##000000
##178E9D	1.00	3.89	5.39	5.39
#FFFFFF	3.89	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#80889E

Deuteranopia (green-blind)

#6F7C9D

Tritanopia (blue-blind)

#009592

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #178e9d;
/* rgb */ color: rgb(23, 142, 157);
/* oklch */ color: oklch(59.4% 0.098 208.5);

Tailwind

colors: {
  custom: {
    50: '#70afba',
    500: '#178e9d',
    950: '#000000',
  },
}

SCSS

$custom: #178e9d;
$custom-light: #70afba;
$custom-dark: #000000;

JSON

{
  "hex": "#178e9d",
  "rgb": {
    "r": 23,
    "g": 142,
    "b": 157
  },
  "hsl": {
    "h": 186.716,
    "s": 74.444,
    "l": 35.294
  },
  "oklch": {
    "l": 0.59361,
    "c": 0.09766,
    "h": 208.5
  },
  "luminance": 0.21962
}

Semantic roles & 50–950 ramp

primary

#178E9D

secondary

#C6584A

accent

#4C37F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178E9D

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

Preview Lab → · Contrast checker → · Palette generator →