#172C53#172C53

#172C53 is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.9% C 0.076 H 261.6°. Best body text is #FFFFFF at 13.80:1 contrast (WCAG AA passes).

Color values

HEX	#172C53
RGB	rgb(23, 44, 83)
HSL	hsl(219, 57%, 21%)
HSV	hsv(219, 72%, 33%)
CMYK	cmyk(72.3%, 47%, 0%, 67.5%)
CIE-LAB	lab(18.40, 6.42, -26.29)
CIE-LCH	lch(18.40, 27.06, 283.72°)
OKLab	oklab(29.86% -0.0111 -0.0751)
OKLCH	oklch(29.86% 0.076 261.6)
XYZ	xyz(2.8148, 2.6078, 8.5369)
Luminance	0.0261 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C53 #533E17

analogous

#174A53 #172C53 #201753

triadic

#172C53 #53172C #2C5317

tetradic

#172C53 #53174A #533E17 #175320

square

#172C53 #53174A #533E17 #175320

split-complementary

#172C53 #532017 #4A5317

monochromatic

#070D18 #0A1323 #172C53 #244583 #325FB3

Accessibility & contrast

On white

13.80

#172C53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#172C53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C53

13.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C53	#FFFFFF	#000000	##FFFFFF
##172C53	1.00	13.80	1.52	13.80
#FFFFFF	13.80	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A3055

Deuteranopia (green-blind)

#102A52

Tritanopia (blue-blind)

#00353B

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172c53;
/* rgb */ color: rgb(23, 44, 83);
/* oklch */ color: oklch(29.9% 0.076 261.6);

Tailwind

colors: {
  custom: {
    50: '#5c6483',
    500: '#172c53',
    950: '#000000',
  },
}

SCSS

$custom: #172c53;
$custom-light: #5c6483;
$custom-dark: #000000;

JSON

{
  "hex": "#172c53",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 83
  },
  "hsl": {
    "h": 219,
    "s": 56.604,
    "l": 20.784
  },
  "oklch": {
    "l": 0.2986,
    "c": 0.07587,
    "h": 261.6
  },
  "luminance": 0.02608
}

Semantic roles & 50–950 ramp

primary

#172C53

secondary

#8A6F3C

accent

#AB48E0

background

#F5F5F8

surface

#E9EAEF

border

#C5C6CA

text

#04050B

muted

#79797C

Preview Lab

Preview with #172C53

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

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