#175B6B#175B6B

#175B6B is a dark, moderate cyan. Relative luminance 0.087; OKLCH L 43.8% C 0.070 H 217.3°. Best body text is #FFFFFF at 7.65:1 contrast (WCAG AA passes).

Color values

HEX	#175B6B
RGB	rgb(23, 91, 107)
HSL	hsl(191, 65%, 25%)
HSV	hsv(191, 79%, 42%)
CMYK	cmyk(78.5%, 15%, 0%, 58%)
CIE-LAB	lab(35.45, -14.74, -15.13)
CIE-LCH	lch(35.45, 21.12, 225.75°)
OKLab	oklab(43.76% -0.0554 -0.0422)
OKLCH	oklch(43.76% 0.07 217.3)
XYZ	xyz(6.7472, 8.7251, 15.2356)
Luminance	0.0873 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#175B6B #6B2717

analogous

#176B51 #175B6B #17316B

triadic

#175B6B #6B175B #5B6B17

tetradic

#175B6B #51176B #6B2717 #316B17

square

#175B6B #51176B #6B2717 #316B17

split-complementary

#175B6B #6B1731 #6B5117

monochromatic

#051519 #0C3039 #175B6B #22869D #2DB1D0

Accessibility & contrast

On white

7.65

#175B6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.75

#175B6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #175B6B

7.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##175B6B	#FFFFFF	#000000	##FFFFFF
##175B6B	1.00	7.65	2.75	7.65
#FFFFFF	7.65	1.00	21.00	1.00
#000000	2.75	21.00	1.00	21.00
##FFFFFF	7.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#51586C

Deuteranopia (green-blind)

#45506B

Tritanopia (blue-blind)

#006160

Achromatopsia (no color)

#535353

Design tokens & code

CSS

--color: #175b6b;
/* rgb */ color: rgb(23, 91, 107);
/* oklch */ color: oklch(43.8% 0.070 217.3);

Tailwind

colors: {
  custom: {
    50: '#638995',
    500: '#175b6b',
    950: '#000000',
  },
}

SCSS

$custom: #175b6b;
$custom-light: #638995;
$custom-dark: #000000;

JSON

{
  "hex": "#175b6b",
  "rgb": {
    "r": 23,
    "g": 91,
    "b": 107
  },
  "hsl": {
    "h": 191.429,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.43763,
    "c": 0.06964,
    "h": 217.3
  },
  "luminance": 0.08726
}

Semantic roles & 50–950 ramp

primary

#175B6B

secondary

#A1503D

accent

#6040E8

background

#F6F8F9

surface

#EBF0F1

border

#C6CBCB

text

#060B0D

muted

#7A7C7E

Preview Lab

Preview with #175B6B

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

Preview Lab → · Contrast checker → · Palette generator →