#172A3A#172A3A

#172A3A is a dark, muted cyan. Relative luminance 0.021; OKLCH L 27.7% C 0.039 H 245.2°. Best body text is #FFFFFF at 14.70:1 contrast (WCAG AA passes).

Color values

HEX	#172A3A
RGB	rgb(23, 42, 58)
HSL	hsl(207, 43%, 16%)
HSV	hsv(207, 60%, 23%)
CMYK	cmyk(60.3%, 27.6%, 0%, 77.3%)
CIE-LAB	lab(16.22, -2.13, -12.62)
CIE-LCH	lch(16.22, 12.80, 260.41°)
OKLab	oklab(27.67% -0.0163 -0.0353)
OKLCH	oklch(27.67% 0.039 245.2)
XYZ	xyz(1.9448, 2.1434, 4.3134)
Luminance	0.0214 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A3A #3A2717

analogous

#173A38 #172A3A #17183A

triadic

#172A3A #3A172A #2A3A17

tetradic

#172A3A #38173A #3A2717 #183A17

square

#172A3A #38173A #3A2717 #183A17

split-complementary

#172A3A #3A1718 #3A3817

monochromatic

#091016 #091016 #172A3A #284A66 #3A6992

Accessibility & contrast

On white

14.70

#172A3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.43

#172A3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A3A

14.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A3A	#FFFFFF	#000000	##FFFFFF
##172A3A	1.00	14.70	1.43	14.70
#FFFFFF	14.70	1.00	21.00	1.00
#000000	1.43	21.00	1.00	21.00
##FFFFFF	14.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#232A3B

Deuteranopia (green-blind)

#1F273A

Tritanopia (blue-blind)

#052E2F

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #172a3a;
/* rgb */ color: rgb(23, 42, 58);
/* oklch */ color: oklch(27.7% 0.039 245.2);

Tailwind

colors: {
  custom: {
    50: '#576370',
    500: '#172a3a',
    950: '#000000',
  },
}

SCSS

$custom: #172a3a;
$custom-light: #576370;
$custom-dark: #000000;

JSON

{
  "hex": "#172a3a",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 58
  },
  "hsl": {
    "h": 207.429,
    "s": 43.21,
    "l": 15.882
  },
  "oklch": {
    "l": 0.27674,
    "c": 0.03884,
    "h": 245.2
  },
  "luminance": 0.02144
}

Semantic roles & 50–950 ramp

primary

#172A3A

secondary

#71543C

accent

#8E55D3

background

#F5F5F6

surface

#E9EAEC

border

#C5C6C7

text

#030507

muted

#78797A

Preview Lab

Preview with #172A3A

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

Preview Lab → · Contrast checker → · Palette generator →