#178DA1#178DA1

#178DA1 is a mid, moderate teal. Relative luminance 0.218; OKLCH L 59.3% C 0.099 H 212.9°. Best body text is #000000 at 5.36:1 contrast (WCAG AA passes).

Color values

HEX	#178DA1
RGB	rgb(23, 141, 161)
HSL	hsl(189, 75%, 36%)
HSV	hsv(189, 86%, 63%)
CMYK	cmyk(85.7%, 12.4%, 0%, 36.9%)
CIE-LAB	lab(53.82, -23.10, -19.27)
CIE-LCH	lch(53.82, 30.08, 219.83°)
OKLab	oklab(59.27% -0.0832 -0.0538)
OKLCH	oklch(59.27% 0.099 212.9)
XYZ	xyz(16.3084, 21.8030, 37.0602)
Luminance	0.2180 (WCAG relative)
Temperature	cool
Family	teal

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#178DA1 #A12B17

analogous

#17A170 #178DA1 #1748A1

triadic

#178DA1 #A1178D #8DA117

tetradic

#178DA1 #7017A1 #A12B17 #48A117

square

#178DA1 #7017A1 #A12B17 #48A117

split-complementary

#178DA1 #A11748 #A17017

monochromatic

#082F36 #0F5E6B #178DA1 #1FBCD7 #4DCFE6

Accessibility & contrast

On white

3.92

#178DA1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.36

#178DA1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #178DA1

5.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##178DA1	#FFFFFF	#000000	##000000
##178DA1	1.00	3.92	5.36	5.36
#FFFFFF	3.92	1.00	21.00	21.00
#000000	5.36	21.00	1.00	1.00
##000000	5.36	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7E88A2

Deuteranopia (green-blind)

#6C7BA1

Tritanopia (blue-blind)

#009593

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #178da1;
/* rgb */ color: rgb(23, 141, 161);
/* oklch */ color: oklch(59.3% 0.099 212.9);

Tailwind

colors: {
  custom: {
    50: '#71aebc',
    500: '#178da1',
    950: '#000000',
  },
}

SCSS

$custom: #178da1;
$custom-light: #71aebc;
$custom-dark: #000000;

JSON

{
  "hex": "#178da1",
  "rgb": {
    "r": 23,
    "g": 141,
    "b": 161
  },
  "hsl": {
    "h": 188.696,
    "s": 75,
    "l": 36.078
  },
  "oklch": {
    "l": 0.59274,
    "c": 0.09905,
    "h": 212.9
  },
  "luminance": 0.21805
}

Semantic roles & 50–950 ramp

primary

#178DA1

secondary

#C75E4C

accent

#5136F2

background

#F7FAFB

surface

#EDF4F6

border

#C8CED0

text

#091012

muted

#7B7F81

Preview Lab

Preview with #178DA1

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

Preview Lab → · Contrast checker → · Palette generator →