#175A7B#175A7B

#175A7B is a dark, moderate cyan. Relative luminance 0.089; OKLCH L 44.3% C 0.084 H 235.3°. Best body text is #FFFFFF at 7.54:1 contrast (WCAG AA passes).

Color values

HEX	#175A7B
RGB	rgb(23, 90, 123)
HSL	hsl(200, 68%, 29%)
HSV	hsv(200, 81%, 48%)
CMYK	cmyk(81.3%, 26.8%, 0%, 51.8%)
CIE-LAB	lab(35.84, -8.19, -24.43)
CIE-LCH	lch(35.84, 25.76, 251.47°)
OKLab	oklab(44.31% -0.0478 -0.0689)
OKLCH	oklch(44.31% 0.084 235.3)
XYZ	xyz(7.5832, 8.9236, 20.0578)
Luminance	0.0892 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#175A7B #7B3817

analogous

#177B6A #175A7B #17287B

triadic

#175A7B #7B175A #5A7B17

tetradic

#175A7B #6A177B #7B3817 #287B17

square

#175A7B #6A177B #7B3817 #287B17

split-complementary

#175A7B #7B1728 #7B6A17

monochromatic

#05131A #0D3447 #175A7B #2180AF #33A2D9

Accessibility & contrast

On white

7.54

#175A7B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.78

#175A7B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #175A7B

7.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##175A7B	#FFFFFF	#000000	##FFFFFF
##175A7B	1.00	7.54	2.78	7.54
#FFFFFF	7.54	1.00	21.00	1.00
#000000	2.78	21.00	1.00	21.00
##FFFFFF	7.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A597D

Deuteranopia (green-blind)

#3D507A

Tritanopia (blue-blind)

#006365

Achromatopsia (no color)

#545454

Design tokens & code

CSS

--color: #175a7b;
/* rgb */ color: rgb(23, 90, 123);
/* oklch */ color: oklch(44.3% 0.084 235.3);

Tailwind

colors: {
  custom: {
    50: '#6588a1',
    500: '#175a7b',
    950: '#000000',
  },
}

SCSS

$custom: #175a7b;
$custom-light: #6588a1;
$custom-dark: #000000;

JSON

{
  "hex": "#175a7b",
  "rgb": {
    "r": 23,
    "g": 90,
    "b": 123
  },
  "hsl": {
    "h": 199.8,
    "s": 68.493,
    "l": 28.627
  },
  "oklch": {
    "l": 0.4431,
    "c": 0.08389,
    "h": 235.3
  },
  "luminance": 0.08925
}

Semantic roles & 50–950 ramp

primary

#175A7B

secondary

#B0643E

accent

#763CEB

background

#F6F8F9

surface

#EBEFF2

border

#C6CACC

text

#070B0F

muted

#7A7C7E

Preview Lab

Preview with #175A7B

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

Preview Lab → · Contrast checker → · Palette generator →