#178D9E#178D9E

#178D9E is a mid, moderate teal. Relative luminance 0.217; OKLCH L 59.1% C 0.098 H 210.3°. Best body text is #000000 at 5.34:1 contrast (WCAG AA passes).

Color values

HEX	#178D9E
RGB	rgb(23, 141, 158)
HSL	hsl(188, 75%, 35%)
HSV	hsv(188, 85%, 62%)
CMYK	cmyk(85.4%, 10.8%, 0%, 38%)
CIE-LAB	lab(53.71, -24.11, -17.71)
CIE-LCH	lch(53.71, 29.91, 216.30°)
OKLab	oklab(59.15% -0.0844 -0.0494)
OKLCH	oklch(59.15% 0.098 210.3)
XYZ	xyz(16.0471, 21.6985, 35.6836)
Luminance	0.2170 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178D9E #9E2817

analogous

#179E6C #178D9E #17499E

triadic

#178D9E #9E178D #8D9E17

tetradic

#178D9E #6C179E #9E2817 #499E17

square

#178D9E #6C179E #9E2817 #499E17

split-complementary

#178D9E #9E1749 #9E6C17

monochromatic

#072E33 #0F5D69 #178D9E #1FBDD3 #4BD1E5

Accessibility & contrast

On white

3.93

#178D9E on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.34

#178D9E on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178D9E

5.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178D9E	#FFFFFF	#000000	##000000
##178D9E	1.00	3.93	5.34	5.34
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.34	21.00	1.00	1.00
##000000	5.34	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F889F

Deuteranopia (green-blind)

#6E7B9E

Tritanopia (blue-blind)

#009492

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #178d9e;
/* rgb */ color: rgb(23, 141, 158);
/* oklch */ color: oklch(59.1% 0.098 210.3);

Tailwind

colors: {
  custom: {
    50: '#70aeba',
    500: '#178d9e',
    950: '#000000',
  },
}

SCSS

$custom: #178d9e;
$custom-light: #70aeba;
$custom-dark: #000000;

JSON

{
  "hex": "#178d9e",
  "rgb": {
    "r": 23,
    "g": 141,
    "b": 158
  },
  "hsl": {
    "h": 187.556,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.59147,
    "c": 0.09782,
    "h": 210.3
  },
  "luminance": 0.21701
}

Semantic roles & 50–950 ramp

primary

#178D9E

secondary

#C65A4A

accent

#4E37F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178D9E

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

Preview Lab → · Contrast checker → · Palette generator →