#177B90#177B90

#177B90 is a mid, moderate cyan. Relative luminance 0.164; OKLCH L 53.9% C 0.090 H 216.3°. Best body text is #FFFFFF at 4.92:1 contrast (WCAG AA passes).

Color values

HEX	#177B90
RGB	rgb(23, 123, 144)
HSL	hsl(190, 72%, 33%)
HSV	hsv(190, 84%, 56%)
CMYK	cmyk(84%, 14.6%, 0%, 43.5%)
CIE-LAB	lab(47.44, -19.41, -19.12)
CIE-LCH	lch(47.44, 27.24, 224.57°)
OKLab	oklab(53.92% -0.0727 -0.0534)
OKLCH	oklch(53.92% 0.09 216.3)
XYZ	xyz(12.4682, 16.3601, 28.8808)
Luminance	0.1636 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#177B90 #902C17

analogous

#179068 #177B90 #173F90

triadic

#177B90 #90177B #7B9017

tetradic

#177B90 #681790 #902C17 #3F9017

square

#177B90 #681790 #902C17 #3F9017

split-complementary

#177B90 #90173F #906817

monochromatic

#062126 #0F4E5B #177B90 #1FA8C5 #41C5E1

Accessibility & contrast

On white

4.92

#177B90 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.27

#177B90 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #177B90

4.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##177B90	#FFFFFF	#000000	##FFFFFF
##177B90	1.00	4.92	4.27	4.92
#FFFFFF	4.92	1.00	21.00	1.00
#000000	4.27	21.00	1.00	21.00
##FFFFFF	4.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6D7791

Deuteranopia (green-blind)

#5D6C90

Tritanopia (blue-blind)

#008282

Achromatopsia (no color)

#717171

Design tokens & code

CSS

--color: #177b90;
/* rgb */ color: rgb(23, 123, 144);
/* oklch */ color: oklch(53.9% 0.090 216.3);

Tailwind

colors: {
  custom: {
    50: '#6ca1b0',
    500: '#177b90',
    950: '#000000',
  },
}

SCSS

$custom: #177b90;
$custom-light: #6ca1b0;
$custom-dark: #000000;

JSON

{
  "hex": "#177b90",
  "rgb": {
    "r": 23,
    "g": 123,
    "b": 144
  },
  "hsl": {
    "h": 190.413,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.53915,
    "c": 0.09023,
    "h": 216.3
  },
  "luminance": 0.16362
}

Semantic roles & 50–950 ramp

primary

#177B90

secondary

#C15842

accent

#5839EF

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#080F10

muted

#7B7E7F

Preview Lab

Preview with #177B90

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

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