#172A4C#172A4C

#172A4C is a dark, moderate blue. Relative luminance 0.024; OKLCH L 28.8% C 0.067 H 261.2°. Best body text is #FFFFFF at 14.27:1 contrast (WCAG AA passes).

Color values

HEX	#172A4C
RGB	rgb(23, 42, 76)
HSL	hsl(218, 54%, 19%)
HSV	hsv(218, 70%, 30%)
CMYK	cmyk(69.7%, 44.7%, 0%, 70.2%)
CIE-LAB	lab(17.27, 4.99, -23.36)
CIE-LCH	lch(17.27, 23.89, 282.07°)
OKLab	oklab(28.84% -0.0103 -0.0665)
OKLCH	oklch(28.84% 0.067 261.2)
XYZ	xyz(2.4854, 2.3597, 7.1606)
Luminance	0.0236 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172A4C #4C3917

analogous

#17454C #172A4C #1F174C

triadic

#172A4C #4C172A #2A4C17

tetradic

#172A4C #4C1745 #4C3917 #174C1F

square

#172A4C #4C1745 #4C3917 #174C1F

split-complementary

#172A4C #4C1F17 #454C17

monochromatic

#070D17 #09101D #172A4C #25447B #335EAA

Accessibility & contrast

On white

14.27

#172A4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.47

#172A4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172A4C

14.27:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172A4C	#FFFFFF	#000000	##FFFFFF
##172A4C	1.00	14.27	1.47	14.27
#FFFFFF	14.27	1.00	21.00	1.00
#000000	1.47	21.00	1.00	21.00
##FFFFFF	14.27	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B2D4D

Deuteranopia (green-blind)

#13284B

Tritanopia (blue-blind)

#003237

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #172a4c;
/* rgb */ color: rgb(23, 42, 76);
/* oklch */ color: oklch(28.8% 0.067 261.2);

Tailwind

colors: {
  custom: {
    50: '#5a637e',
    500: '#172a4c',
    950: '#000000',
  },
}

SCSS

$custom: #172a4c;
$custom-light: #5a637e;
$custom-dark: #000000;

JSON

{
  "hex": "#172a4c",
  "rgb": {
    "r": 23,
    "g": 42,
    "b": 76
  },
  "hsl": {
    "h": 218.491,
    "s": 53.535,
    "l": 19.412
  },
  "oklch": {
    "l": 0.28838,
    "c": 0.06729,
    "h": 261.2
  },
  "luminance": 0.0236
}

Semantic roles & 50–950 ramp

primary

#172A4C

secondary

#836A3C

accent

#A94BDD

background

#F5F5F7

surface

#E9EAEE

border

#C5C6C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #172A4C

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

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