#172C4B#172C4B

#172C4B is a dark, moderate blue. Relative luminance 0.025; OKLCH L 29.3% C 0.063 H 258.0°. Best body text is #FFFFFF at 14.01:1 contrast (WCAG AA passes).

Color values

HEX	#172C4B
RGB	rgb(23, 44, 75)
HSL	hsl(216, 53%, 19%)
HSV	hsv(216, 69%, 29%)
CMYK	cmyk(69.3%, 41.3%, 0%, 70.6%)
CIE-LAB	lab(17.88, 3.13, -21.72)
CIE-LCH	lch(17.88, 21.94, 278.21°)
OKLab	oklab(29.29% -0.0131 -0.0616)
OKLCH	oklch(29.29% 0.063 258)
XYZ	xyz(2.5236, 2.4913, 7.0031)
Luminance	0.0249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C4B #4B3617

analogous

#17464B #172C4B #1C174B

triadic

#172C4B #4B172C #2C4B17

tetradic

#172C4B #4B1746 #4B3617 #174B1C

square

#172C4B #4B1746 #4B3617 #174B1C

split-complementary

#172C4B #4B1C17 #464B17

monochromatic

#070E17 #09111C #172C4B #25477A #3463A9

Accessibility & contrast

On white

14.01

#172C4B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#172C4B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C4B

14.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C4B	#FFFFFF	#000000	##FFFFFF
##172C4B	1.00	14.01	1.50	14.01
#FFFFFF	14.01	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F2E4C

Deuteranopia (green-blind)

#172A4A

Tritanopia (blue-blind)

#003337

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #172c4b;
/* rgb */ color: rgb(23, 44, 75);
/* oklch */ color: oklch(29.3% 0.063 258.0);

Tailwind

colors: {
  custom: {
    50: '#5a647d',
    500: '#172c4b',
    950: '#000000',
  },
}

SCSS

$custom: #172c4b;
$custom-light: #5a647d;
$custom-dark: #000000;

JSON

{
  "hex": "#172c4b",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 75
  },
  "hsl": {
    "h": 215.769,
    "s": 53.061,
    "l": 19.216
  },
  "oklch": {
    "l": 0.29288,
    "c": 0.06302,
    "h": 258
  },
  "luminance": 0.02492
}

Semantic roles & 50–950 ramp

primary

#172C4B

secondary

#82663C

accent

#A24BDC

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#040509

muted

#797A7B

Preview Lab

Preview with #172C4B

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

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