#173B65#173B65

#173B65 is a dark, moderate cyan. Relative luminance 0.043; OKLCH L 35.0% C 0.084 H 254.2°. Best body text is #FFFFFF at 11.35:1 contrast (WCAG AA passes).

Color values

HEX	#173B65
RGB	rgb(23, 59, 101)
HSL	hsl(212, 63%, 24%)
HSV	hsv(212, 77%, 40%)
CMYK	cmyk(77.2%, 41.6%, 0%, 60.4%)
CIE-LAB	lab(24.48, 3.20, -28.45)
CIE-LCH	lch(24.48, 28.63, 276.43°)
OKLab	oklab(34.96% -0.023 -0.0811)
OKLCH	oklch(34.96% 0.084 254.2)
XYZ	xyz(4.2654, 4.2492, 12.9048)
Luminance	0.0425 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B65 #654117

analogous

#176265 #173B65 #1A1765

triadic

#173B65 #65173B #3B6517

tetradic

#173B65 #651762 #654117 #17651A

square

#173B65 #651762 #654117 #17651A

split-complementary

#173B65 #651A17 #626517

monochromatic

#060F19 #0C1E33 #173B65 #225897 #2E75C9

Accessibility & contrast

On white

11.35

#173B65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.85

#173B65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B65

11.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B65	#FFFFFF	#000000	##FFFFFF
##173B65	1.00	11.35	1.85	11.35
#FFFFFF	11.35	1.00	21.00	1.00
#000000	1.85	21.00	1.00	21.00
##FFFFFF	11.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#273E67

Deuteranopia (green-blind)

#1B3764

Tritanopia (blue-blind)

#00454B

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173b65;
/* rgb */ color: rgb(23, 59, 101);
/* oklch */ color: oklch(35.0% 0.084 254.2);

Tailwind

colors: {
  custom: {
    50: '#607091',
    500: '#173b65',
    950: '#000000',
  },
}

SCSS

$custom: #173b65;
$custom-light: #607091;
$custom-dark: #000000;

JSON

{
  "hex": "#173b65",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 101
  },
  "hsl": {
    "h": 212.308,
    "s": 62.903,
    "l": 24.314
  },
  "oklch": {
    "l": 0.34956,
    "c": 0.08432,
    "h": 254.2
  },
  "luminance": 0.0425
}

Semantic roles & 50–950 ramp

primary

#173B65

secondary

#9B703C

accent

#9A42E6

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070D

muted

#797A7D

Preview Lab

Preview with #173B65

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

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