#172C52#172C52

#172C52 is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.8% C 0.074 H 261.3°. Best body text is #FFFFFF at 13.83:1 contrast (WCAG AA passes).

Color values

HEX	#172C52
RGB	rgb(23, 44, 82)
HSL	hsl(219, 56%, 21%)
HSV	hsv(219, 72%, 32%)
CMYK	cmyk(72%, 46.3%, 0%, 67.8%)
CIE-LAB	lab(18.33, 6.01, -25.73)
CIE-LCH	lch(18.33, 26.42, 283.15°)
OKLab	oklab(29.79% -0.0113 -0.0734)
OKLCH	oklch(29.79% 0.074 261.3)
XYZ	xyz(2.7765, 2.5924, 8.3351)
Luminance	0.0259 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C52 #523D17

analogous

#174952 #172C52 #1F1752

triadic

#172C52 #52172C #2C5217

tetradic

#172C52 #521749 #523D17 #17521F

square

#172C52 #521749 #523D17 #17521F

split-complementary

#172C52 #521F17 #495217

monochromatic

#070D18 #0A1222 #172C52 #244682 #325FB2

Accessibility & contrast

On white

13.83

#172C52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#172C52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C52

13.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C52	#FFFFFF	#000000	##FFFFFF
##172C52	1.00	13.83	1.52	13.83
#FFFFFF	13.83	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1A3053

Deuteranopia (green-blind)

#112A51

Tritanopia (blue-blind)

#00353B

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172c52;
/* rgb */ color: rgb(23, 44, 82);
/* oklch */ color: oklch(29.8% 0.074 261.3);

Tailwind

colors: {
  custom: {
    50: '#5c6483',
    500: '#172c52',
    950: '#000000',
  },
}

SCSS

$custom: #172c52;
$custom-light: #5c6483;
$custom-dark: #000000;

JSON

{
  "hex": "#172c52",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 82
  },
  "hsl": {
    "h": 218.644,
    "s": 56.19,
    "l": 20.588
  },
  "oklch": {
    "l": 0.29786,
    "c": 0.07426,
    "h": 261.3
  },
  "luminance": 0.02593
}

Semantic roles & 50–950 ramp

primary

#172C52

secondary

#896E3C

accent

#AA48DF

background

#F5F5F8

surface

#E9EAEF

border

#C5C6CA

text

#04050A

muted

#79797C

Preview Lab

Preview with #172C52

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

Preview Lab → · Contrast checker → · Palette generator →