#173A4B#173A4B

#173A4B is a dark, muted cyan. Relative luminance 0.037; OKLCH L 33.1% C 0.050 H 232.2°. Best body text is #FFFFFF at 12.05:1 contrast (WCAG AA passes).

Color values

HEX	#173A4B
RGB	rgb(23, 58, 75)
HSL	hsl(200, 53%, 19%)
HSV	hsv(200, 69%, 29%)
CMYK	cmyk(69.3%, 22.7%, 0%, 70.6%)
CIE-LAB	lab(22.71, -6.49, -14.16)
CIE-LCH	lch(22.71, 15.58, 245.40°)
OKLab	oklab(33.09% -0.0308 -0.0396)
OKLCH	oklch(33.09% 0.05 232.2)
XYZ	xyz(3.1359, 3.7160, 7.2072)
Luminance	0.0372 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173A4B #4B2817

analogous

#174B42 #173A4B #17204B

triadic

#173A4B #4B173A #3A4B17

tetradic

#173A4B #42174B #4B2817 #204B17

square

#173A4B #42174B #4B2817 #204B17

split-complementary

#173A4B #4B1720 #4B4217

monochromatic

#071217 #09161C #173A4B #255E7A #3482A9

Accessibility & contrast

On white

12.05

#173A4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.74

#173A4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173A4B

12.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173A4B	#FFFFFF	#000000	##FFFFFF
##173A4B	1.00	12.05	1.74	12.05
#FFFFFF	12.05	1.00	21.00	1.00
#000000	1.74	21.00	1.00	21.00
##FFFFFF	12.05	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#32394C

Deuteranopia (green-blind)

#2A344B

Tritanopia (blue-blind)

#003F40

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #173a4b;
/* rgb */ color: rgb(23, 58, 75);
/* oklch */ color: oklch(33.1% 0.050 232.2);

Tailwind

colors: {
  custom: {
    50: '#5a707d',
    500: '#173a4b',
    950: '#000000',
  },
}

SCSS

$custom: #173a4b;
$custom-light: #5a707d;
$custom-dark: #000000;

JSON

{
  "hex": "#173a4b",
  "rgb": {
    "r": 23,
    "g": 58,
    "b": 75
  },
  "hsl": {
    "h": 199.615,
    "s": 53.061,
    "l": 19.216
  },
  "oklch": {
    "l": 0.33093,
    "c": 0.05017,
    "h": 232.2
  },
  "luminance": 0.03716
}

Semantic roles & 50–950 ramp

primary

#173A4B

secondary

#82533C

accent

#7B4BDC

background

#F5F6F7

surface

#E9ECEE

border

#C5C7C9

text

#040709

muted

#797A7B

Preview Lab

Preview with #173A4B

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

Preview Lab → · Contrast checker → · Palette generator →