#178C9E#178C9E

#178C9E is a mid, moderate teal. Relative luminance 0.214; OKLCH L 58.9% C 0.098 H 211.3°. Best body text is #000000 at 5.28:1 contrast (WCAG AA passes).

Color values

HEX	#178C9E
RGB	rgb(23, 140, 158)
HSL	hsl(188, 75%, 35%)
HSV	hsv(188, 85%, 62%)
CMYK	cmyk(85.4%, 11.4%, 0%, 38%)
CIE-LAB	lab(53.39, -23.59, -18.19)
CIE-LCH	lch(53.39, 29.79, 217.63°)
OKLab	oklab(58.89% -0.0835 -0.0508)
OKLCH	oklch(58.89% 0.098 211.3)
XYZ	xyz(15.9003, 21.4049, 35.6347)
Luminance	0.2141 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178C9E #9E2917

analogous

#179E6C #178C9E #17489E

triadic

#178C9E #9E178C #8C9E17

tetradic

#178C9E #6C179E #9E2917 #489E17

square

#178C9E #6C179E #9E2917 #489E17

split-complementary

#178C9E #9E1748 #9E6C17

monochromatic

#072D33 #0F5D69 #178C9E #1FBBD3 #4BD0E5

Accessibility & contrast

On white

3.98

#178C9E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.28

#178C9E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178C9E

5.28:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178C9E	#FFFFFF	#000000	##000000
##178C9E	1.00	3.98	5.28	5.28
#FFFFFF	3.98	1.00	21.00	21.00
#000000	5.28	21.00	1.00	1.00
##000000	5.28	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E879F

Deuteranopia (green-blind)

#6C7A9E

Tritanopia (blue-blind)

#009391

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #178c9e;
/* rgb */ color: rgb(23, 140, 158);
/* oklch */ color: oklch(58.9% 0.098 211.3);

Tailwind

colors: {
  custom: {
    50: '#70aeba',
    500: '#178c9e',
    950: '#000000',
  },
}

SCSS

$custom: #178c9e;
$custom-light: #70aeba;
$custom-dark: #000000;

JSON

{
  "hex": "#178c9e",
  "rgb": {
    "r": 23,
    "g": 140,
    "b": 158
  },
  "hsl": {
    "h": 188,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.58892,
    "c": 0.09769,
    "h": 211.3
  },
  "luminance": 0.21407
}

Semantic roles & 50–950 ramp

primary

#178C9E

secondary

#C65B4A

accent

#4F37F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178C9E

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

Preview Lab → · Contrast checker → · Palette generator →