#173B45#173B45

#173B45 is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.1% C 0.045 H 218.7°. Best body text is #FFFFFF at 12.01:1 contrast (WCAG AA passes).

Color values

HEX	#173B45
RGB	rgb(23, 59, 69)
HSL	hsl(193, 50%, 18%)
HSV	hsv(193, 67%, 27%)
CMYK	cmyk(66.7%, 14.5%, 0%, 72.9%)
CIE-LAB	lab(22.79, -9.34, -10.03)
CIE-LCH	lch(22.79, 13.71, 227.04°)
OKLab	oklab(33.07% -0.0348 -0.0279)
OKLCH	oklch(33.07% 0.045 218.7)
XYZ	xyz(2.9911, 3.7395, 6.1932)
Luminance	0.0374 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B45 #452117

analogous

#174538 #173B45 #172445

triadic

#173B45 #45173B #3B4517

tetradic

#173B45 #381745 #452117 #244517

square

#173B45 #381745 #452117 #244517

split-complementary

#173B45 #451724 #453817

monochromatic

#081417 #081417 #173B45 #266273 #3689A1

Accessibility & contrast

On white

12.01

#173B45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.75

#173B45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B45

12.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B45	#FFFFFF	#000000	##FFFFFF
##173B45	1.00	12.01	1.75	12.01
#FFFFFF	12.01	1.00	21.00	1.00
#000000	1.75	21.00	1.00	21.00
##FFFFFF	12.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#353946

Deuteranopia (green-blind)

#2E3445

Tritanopia (blue-blind)

#003E3E

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #173b45;
/* rgb */ color: rgb(23, 59, 69);
/* oklch */ color: oklch(33.1% 0.045 218.7);

Tailwind

colors: {
  custom: {
    50: '#5a7178',
    500: '#173b45',
    950: '#000000',
  },
}

SCSS

$custom: #173b45;
$custom-light: #5a7178;
$custom-dark: #000000;

JSON

{
  "hex": "#173b45",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 69
  },
  "hsl": {
    "h": 193.043,
    "s": 50,
    "l": 18.039
  },
  "oklch": {
    "l": 0.33068,
    "c": 0.04455,
    "h": 218.7
  },
  "luminance": 0.0374
}

Semantic roles & 50–950 ramp

primary

#173B45

secondary

#7C4A3C

accent

#6D4EDA

background

#F5F6F7

surface

#E9ECED

border

#C5C7C8

text

#040709

muted

#797A7B

Preview Lab

Preview with #173B45

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

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