#172B3A#172B3A

#172B3A is a dark, muted cyan. Relative luminance 0.022; OKLCH L 28.0% C 0.038 H 242.3°. Best body text is #FFFFFF at 14.55:1 contrast (WCAG AA passes).

Color values

HEX	#172B3A
RGB	rgb(23, 43, 58)
HSL	hsl(206, 43%, 16%)
HSV	hsv(206, 60%, 23%)
CMYK	cmyk(60.3%, 25.9%, 0%, 77.3%)
CIE-LAB	lab(16.58, -2.83, -12.07)
CIE-LCH	lch(16.58, 12.40, 256.80°)
OKLab	oklab(27.96% -0.0177 -0.0337)
OKLCH	oklch(27.96% 0.038 242.3)
XYZ	xyz(1.9807, 2.2152, 4.3254)
Luminance	0.0221 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B3A #3A2617

analogous

#173A37 #172B3A #17193A

triadic

#172B3A #3A172B #2B3A17

tetradic

#172B3A #37173A #3A2617 #193A17

square

#172B3A #37173A #3A2617 #193A17

split-complementary

#172B3A #3A1719 #3A3717

monochromatic

#091016 #091016 #172B3A #284B66 #3A6C92

Accessibility & contrast

On white

14.55

#172B3A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#172B3A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B3A

14.55:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B3A	#FFFFFF	#000000	##FFFFFF
##172B3A	1.00	14.55	1.44	14.55
#FFFFFF	14.55	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.55	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#242B3B

Deuteranopia (green-blind)

#20273A

Tritanopia (blue-blind)

#042F30

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #172b3a;
/* rgb */ color: rgb(23, 43, 58);
/* oklch */ color: oklch(28.0% 0.038 242.3);

Tailwind

colors: {
  custom: {
    50: '#576470',
    500: '#172b3a',
    950: '#000000',
  },
}

SCSS

$custom: #172b3a;
$custom-light: #576470;
$custom-dark: #000000;

JSON

{
  "hex": "#172b3a",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 58
  },
  "hsl": {
    "h": 205.714,
    "s": 43.21,
    "l": 15.882
  },
  "oklch": {
    "l": 0.27955,
    "c": 0.03806,
    "h": 242.3
  },
  "luminance": 0.02215
}

Semantic roles & 50–950 ramp

primary

#172B3A

secondary

#71533C

accent

#8B55D3

background

#F5F5F6

surface

#E9EAEC

border

#C5C6C7

text

#030507

muted

#78797A

Preview Lab

Preview with #172B3A

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

Preview Lab → · Contrast checker → · Palette generator →