#172E40#172E40

#172E40 is a dark, muted cyan. Relative luminance 0.025; OKLCH L 29.1% C 0.044 H 243.7°. Best body text is #FFFFFF at 13.99:1 contrast (WCAG AA passes).

Color values

HEX	#172E40
RGB	rgb(23, 46, 64)
HSL	hsl(206, 47%, 17%)
HSV	hsv(206, 64%, 25%)
CMYK	cmyk(64.1%, 28.1%, 0%, 74.9%)
CIE-LAB	lab(17.95, -2.64, -14.10)
CIE-LCH	lch(17.95, 14.35, 259.40°)
OKLab	oklab(29.14% -0.0195 -0.0395)
OKLCH	oklch(29.14% 0.044 243.7)
XYZ	xyz(2.2554, 2.5061, 5.2144)
Luminance	0.0251 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E40 #402917

analogous

#17403E #172E40 #171A40

triadic

#172E40 #40172E #2E4017

tetradic

#172E40 #3E1740 #402917 #1A4017

square

#172E40 #3E1740 #402917 #1A4017

split-complementary

#172E40 #40171A #403E17

monochromatic

#081017 #081017 #172E40 #274E6D #376F9A

Accessibility & contrast

On white

13.99

#172E40 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#172E40 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E40

13.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E40	#FFFFFF	#000000	##FFFFFF
##172E40	1.00	13.99	1.50	13.99
#FFFFFF	13.99	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.99	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#262E41

Deuteranopia (green-blind)

#212A40

Tritanopia (blue-blind)

#003234

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #172e40;
/* rgb */ color: rgb(23, 46, 64);
/* oklch */ color: oklch(29.1% 0.044 243.7);

Tailwind

colors: {
  custom: {
    50: '#586675',
    500: '#172e40',
    950: '#000000',
  },
}

SCSS

$custom: #172e40;
$custom-light: #586675;
$custom-dark: #000000;

JSON

{
  "hex": "#172e40",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 64
  },
  "hsl": {
    "h": 206.341,
    "s": 47.126,
    "l": 17.059
  },
  "oklch": {
    "l": 0.29136,
    "c": 0.04405,
    "h": 243.7
  },
  "luminance": 0.02506
}

Semantic roles & 50–950 ramp

primary

#172E40

secondary

#77563C

accent

#8C51D7

background

#F5F6F7

surface

#E9EBED

border

#C5C6C8

text

#030608

muted

#787A7B

Preview Lab

Preview with #172E40

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

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