#178B9E#178B9E

#178B9E is a mid, moderate teal. Relative luminance 0.211; OKLCH L 58.6% C 0.098 H 212.3°. Best body text is #000000 at 5.22:1 contrast (WCAG AA passes).

Color values

HEX	#178B9E
RGB	rgb(23, 139, 158)
HSL	hsl(188, 75%, 35%)
HSV	hsv(188, 85%, 62%)
CMYK	cmyk(85.4%, 12%, 0%, 38%)
CIE-LAB	lab(53.07, -23.07, -18.67)
CIE-LCH	lch(53.07, 29.68, 218.98°)
OKLab	oklab(58.64% -0.0825 -0.0521)
OKLCH	oklch(58.64% 0.098 212.3)
XYZ	xyz(15.7548, 21.1140, 35.5862)
Luminance	0.2112 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178B9E #9E2A17

analogous

#179E6D #178B9E #17489E

triadic

#178B9E #9E178B #8B9E17

tetradic

#178B9E #6D179E #9E2A17 #489E17

square

#178B9E #6D179E #9E2A17 #489E17

split-complementary

#178B9E #9E1748 #9E6D17

monochromatic

#072D33 #0F5C69 #178B9E #1FBAD3 #4BCFE5

Accessibility & contrast

On white

4.02

#178B9E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.22

#178B9E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178B9E

5.22:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178B9E	#FFFFFF	#000000	##000000
##178B9E	1.00	4.02	5.22	5.22
#FFFFFF	4.02	1.00	21.00	21.00
#000000	5.22	21.00	1.00	1.00
##000000	5.22	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C869F

Deuteranopia (green-blind)

#6B799E

Tritanopia (blue-blind)

#009391

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #178b9e;
/* rgb */ color: rgb(23, 139, 158);
/* oklch */ color: oklch(58.6% 0.098 212.3);

Tailwind

colors: {
  custom: {
    50: '#70adba',
    500: '#178b9e',
    950: '#000000',
  },
}

SCSS

$custom: #178b9e;
$custom-light: #70adba;
$custom-dark: #000000;

JSON

{
  "hex": "#178b9e",
  "rgb": {
    "r": 23,
    "g": 139,
    "b": 158
  },
  "hsl": {
    "h": 188.444,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.58637,
    "c": 0.09758,
    "h": 212.3
  },
  "luminance": 0.21116
}

Semantic roles & 50–950 ramp

primary

#178B9E

secondary

#C65C4A

accent

#5137F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178B9E

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

Preview Lab → · Contrast checker → · Palette generator →