#172C4C#172C4C

#172C4C is a dark, moderate blue. Relative luminance 0.025; OKLCH L 29.4% C 0.065 H 258.6°. Best body text is #FFFFFF at 13.99:1 contrast (WCAG AA passes).

Color values

HEX	#172C4C
RGB	rgb(23, 44, 76)
HSL	hsl(216, 54%, 19%)
HSV	hsv(216, 70%, 30%)
CMYK	cmyk(69.7%, 42.1%, 0%, 70.2%)
CIE-LAB	lab(17.94, 3.54, -22.30)
CIE-LCH	lch(17.94, 22.58, 279.02°)
OKLab	oklab(29.36% -0.0128 -0.0633)
OKLCH	oklch(29.36% 0.065 258.6)
XYZ	xyz(2.5581, 2.5051, 7.1848)
Luminance	0.0250 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C4C #4C3717

analogous

#17474C #172C4C #1D174C

triadic

#172C4C #4C172C #2C4C17

tetradic

#172C4C #4C1747 #4C3717 #174C1D

square

#172C4C #4C1747 #4C3717 #174C1D

split-complementary

#172C4C #4C1D17 #474C17

monochromatic

#070E17 #09111D #172C4C #25477B #3362AA

Accessibility & contrast

On white

13.99

#172C4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#172C4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C4C

13.99:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C4C	#FFFFFF	#000000	##FFFFFF
##172C4C	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)

#1E2F4D

Deuteranopia (green-blind)

#172A4B

Tritanopia (blue-blind)

#003338

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #172c4c;
/* rgb */ color: rgb(23, 44, 76);
/* oklch */ color: oklch(29.4% 0.065 258.6);

Tailwind

colors: {
  custom: {
    50: '#5a647e',
    500: '#172c4c',
    950: '#000000',
  },
}

SCSS

$custom: #172c4c;
$custom-light: #5a647e;
$custom-dark: #000000;

JSON

{
  "hex": "#172c4c",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 76
  },
  "hsl": {
    "h": 216.226,
    "s": 53.535,
    "l": 19.412
  },
  "oklch": {
    "l": 0.29357,
    "c": 0.06463,
    "h": 258.6
  },
  "luminance": 0.02505
}

Semantic roles & 50–950 ramp

primary

#172C4C

secondary

#83673C

accent

#A34BDD

background

#F5F5F7

surface

#E9EAEE

border

#C5C6C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #172C4C

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

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