#178EA1#178EA1

#178EA1 is a mid, moderate teal. Relative luminance 0.221; OKLCH L 59.5% C 0.099 H 211.9°. Best body text is #000000 at 5.42:1 contrast (WCAG AA passes).

Color values

HEX	#178EA1
RGB	rgb(23, 142, 161)
HSL	hsl(188, 75%, 36%)
HSV	hsv(188, 86%, 63%)
CMYK	cmyk(85.7%, 11.8%, 0%, 36.9%)
CIE-LAB	lab(54.13, -23.62, -18.79)
CIE-LCH	lch(54.13, 30.18, 218.50°)
OKLab	oklab(59.53% -0.0841 -0.0524)
OKLCH	oklch(59.53% 0.099 211.9)
XYZ	xyz(16.4565, 22.0992, 37.1095)
Luminance	0.2210 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178EA1 #A12A17

analogous

#17A16F #178EA1 #1749A1

triadic

#178EA1 #A1178E #8EA117

tetradic

#178EA1 #6F17A1 #A12A17 #49A117

square

#178EA1 #6F17A1 #A12A17 #49A117

split-complementary

#178EA1 #A11749 #A16F17

monochromatic

#083036 #0F5F6B #178EA1 #1FBDD7 #4DD1E6

Accessibility & contrast

On white

3.87

#178EA1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.42

#178EA1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178EA1

5.42:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178EA1	#FFFFFF	#000000	##000000
##178EA1	1.00	3.87	5.42	5.42
#FFFFFF	3.87	1.00	21.00	21.00
#000000	5.42	21.00	1.00	1.00
##000000	5.42	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7F89A2

Deuteranopia (green-blind)

#6E7CA1

Tritanopia (blue-blind)

#009694

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #178ea1;
/* rgb */ color: rgb(23, 142, 161);
/* oklch */ color: oklch(59.5% 0.099 211.9);

Tailwind

colors: {
  custom: {
    50: '#71afbc',
    500: '#178ea1',
    950: '#000000',
  },
}

SCSS

$custom: #178ea1;
$custom-light: #71afbc;
$custom-dark: #000000;

JSON

{
  "hex": "#178ea1",
  "rgb": {
    "r": 23,
    "g": 142,
    "b": 161
  },
  "hsl": {
    "h": 188.261,
    "s": 75,
    "l": 36.078
  },
  "oklch": {
    "l": 0.59529,
    "c": 0.09914,
    "h": 211.9
  },
  "luminance": 0.22101
}

Semantic roles & 50–950 ramp

primary

#178EA1

secondary

#C75D4C

accent

#5036F2

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091012

muted

#7B7F81

Preview Lab

Preview with #178EA1

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

Preview Lab → · Contrast checker → · Palette generator →