#172E4B#172E4B

#172E4B is a dark, moderate cyan. Relative luminance 0.026; OKLCH L 29.8% C 0.061 H 255.1°. Best body text is #FFFFFF at 13.74:1 contrast (WCAG AA passes).

Color values

HEX	#172E4B
RGB	rgb(23, 46, 75)
HSL	hsl(213, 53%, 19%)
HSV	hsv(213, 69%, 29%)
CMYK	cmyk(69.3%, 38.7%, 0%, 70.6%)
CIE-LAB	lab(18.56, 1.70, -20.65)
CIE-LCH	lch(18.56, 20.72, 274.70°)
OKLab	oklab(29.82% -0.0156 -0.0585)
OKLCH	oklch(29.82% 0.061 255.1)
XYZ	xyz(2.5999, 2.6439, 7.0286)
Luminance	0.0264 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E4B #4B3417

analogous

#17484B #172E4B #1A174B

triadic

#172E4B #4B172E #2E4B17

tetradic

#172E4B #4B1748 #4B3417 #174B1A

square

#172E4B #4B1748 #4B3417 #174B1A

split-complementary

#172E4B #4B1A17 #484B17

monochromatic

#070E17 #09111C #172E4B #254B7A #3467A9

Accessibility & contrast

On white

13.74

#172E4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#172E4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E4B

13.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E4B	#FFFFFF	#000000	##FFFFFF
##172E4B	1.00	13.74	1.53	13.74
#FFFFFF	13.74	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.74	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#22304C

Deuteranopia (green-blind)

#1A2B4A

Tritanopia (blue-blind)

#003539

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172e4b;
/* rgb */ color: rgb(23, 46, 75);
/* oklch */ color: oklch(29.8% 0.061 255.1);

Tailwind

colors: {
  custom: {
    50: '#5a667d',
    500: '#172e4b',
    950: '#000000',
  },
}

SCSS

$custom: #172e4b;
$custom-light: #5a667d;
$custom-dark: #000000;

JSON

{
  "hex": "#172e4b",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 75
  },
  "hsl": {
    "h": 213.462,
    "s": 53.061,
    "l": 19.216
  },
  "oklch": {
    "l": 0.29817,
    "c": 0.06053,
    "h": 255.1
  },
  "luminance": 0.02644
}

Semantic roles & 50–950 ramp

primary

#172E4B

secondary

#82633C

accent

#9C4BDC

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#040509

muted

#797A7B

Preview Lab

Preview with #172E4B

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

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