#178D9D#178D9D

#178D9D is a mid, moderate teal. Relative luminance 0.217; OKLCH L 59.1% C 0.097 H 209.5°. Best body text is #000000 at 5.33:1 contrast (WCAG AA passes).

Color values

HEX	#178D9D
RGB	rgb(23, 141, 157)
HSL	hsl(187, 74%, 35%)
HSV	hsv(187, 85%, 62%)
CMYK	cmyk(85.4%, 10.2%, 0%, 38.4%)
CIE-LAB	lab(53.67, -24.44, -17.19)
CIE-LCH	lch(53.67, 29.88, 215.11°)
OKLab	oklab(59.11% -0.0849 -0.0479)
OKLCH	oklch(59.11% 0.097 209.5)
XYZ	xyz(15.9613, 21.6642, 35.2321)
Luminance	0.2167 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178D9D #9D2717

analogous

#179D6A #178D9D #174A9D

triadic

#178D9D #9D178D #8D9D17

tetradic

#178D9D #6A179D #9D2717 #4A9D17

square

#178D9D #6A179D #9D2717 #4A9D17

split-complementary

#178D9D #9D174A #9D6A17

monochromatic

#072D32 #0F5D68 #178D9D #1FBDD2 #4AD2E4

Accessibility & contrast

On white

3.94

#178D9D on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.33

#178D9D on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178D9D

5.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178D9D	#FFFFFF	#000000	##000000
##178D9D	1.00	3.94	5.33	5.33
#FFFFFF	3.94	1.00	21.00	21.00
#000000	5.33	21.00	1.00	1.00
##000000	5.33	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F879E

Deuteranopia (green-blind)

#6E7B9D

Tritanopia (blue-blind)

#009492

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #178d9d;
/* rgb */ color: rgb(23, 141, 157);
/* oklch */ color: oklch(59.1% 0.097 209.5);

Tailwind

colors: {
  custom: {
    50: '#70aeba',
    500: '#178d9d',
    950: '#000000',
  },
}

SCSS

$custom: #178d9d;
$custom-light: #70aeba;
$custom-dark: #000000;

JSON

{
  "hex": "#178d9d",
  "rgb": {
    "r": 23,
    "g": 141,
    "b": 157
  },
  "hsl": {
    "h": 187.164,
    "s": 74.444,
    "l": 35.294
  },
  "oklch": {
    "l": 0.59105,
    "c": 0.09746,
    "h": 209.5
  },
  "luminance": 0.21666
}

Semantic roles & 50–950 ramp

primary

#178D9D

secondary

#C6594A

accent

#4D37F1

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091011

muted

#7B7F80

Preview Lab

Preview with #178D9D

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

Preview Lab → · Contrast checker → · Palette generator →