#177A90#177A90

#177A90 is a mid, moderate cyan. Relative luminance 0.161; OKLCH L 53.7% C 0.090 H 217.4°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#177A90
RGB	rgb(23, 122, 144)
HSL	hsl(191, 72%, 33%)
HSV	hsv(191, 84%, 56%)
CMYK	cmyk(84%, 15.3%, 0%, 43.5%)
CIE-LAB	lab(47.12, -18.87, -19.61)
CIE-LCH	lch(47.12, 27.21, 226.10°)
OKLab	oklab(53.66% -0.0717 -0.0548)
OKLCH	oklch(53.66% 0.09 217.4)
XYZ	xyz(12.3448, 16.1133, 28.8397)
Luminance	0.1611 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#177A90 #902D17

analogous

#179069 #177A90 #173E90

triadic

#177A90 #90177A #7A9017

tetradic

#177A90 #691790 #902D17 #3E9017

square

#177A90 #691790 #902D17 #3E9017

split-complementary

#177A90 #90173E #906917

monochromatic

#062126 #0F4D5B #177A90 #1FA7C5 #41C4E1

Accessibility & contrast

On white

4.97

#177A90 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#177A90 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #177A90

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##177A90	#FFFFFF	#000000	##FFFFFF
##177A90	1.00	4.97	4.22	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6C7691

Deuteranopia (green-blind)

#5C6B90

Tritanopia (blue-blind)

#008281

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #177a90;
/* rgb */ color: rgb(23, 122, 144);
/* oklch */ color: oklch(53.7% 0.090 217.4);

Tailwind

colors: {
  custom: {
    50: '#6ca0b0',
    500: '#177a90',
    950: '#000000',
  },
}

SCSS

$custom: #177a90;
$custom-light: #6ca0b0;
$custom-dark: #000000;

JSON

{
  "hex": "#177a90",
  "rgb": {
    "r": 23,
    "g": 122,
    "b": 144
  },
  "hsl": {
    "h": 190.909,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.53657,
    "c": 0.09027,
    "h": 217.4
  },
  "luminance": 0.16115
}

Semantic roles & 50–950 ramp

primary

#177A90

secondary

#C15942

accent

#5A39EF

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080E10

muted

#7B7E7F

Preview Lab

Preview with #177A90

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

Preview Lab → · Contrast checker → · Palette generator →