#172D52#172D52

#172D52 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.0% C 0.073 H 260.2°. Best body text is #FFFFFF at 13.69:1 contrast (WCAG AA passes).

Color values

HEX	#172D52
RGB	rgb(23, 45, 82)
HSL	hsl(218, 56%, 21%)
HSV	hsv(218, 72%, 32%)
CMYK	cmyk(72%, 45.1%, 0%, 67.8%)
CIE-LAB	lab(18.66, 5.28, -25.20)
CIE-LCH	lch(18.66, 25.75, 281.83°)
OKLab	oklab(30.04% -0.0124 -0.0718)
OKLCH	oklch(30.04% 0.073 260.2)
XYZ	xyz(2.8142, 2.6679, 8.3476)
Luminance	0.0267 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D52 #523C17

analogous

#174A52 #172D52 #1E1752

triadic

#172D52 #52172D #2D5217

tetradic

#172D52 #52174A #523C17 #17521E

square

#172D52 #52174A #523C17 #17521E

split-complementary

#172D52 #521E17 #4A5217

monochromatic

#070D18 #0A1322 #172D52 #244782 #3261B2

Accessibility & contrast

On white

13.69

#172D52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#172D52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D52

13.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D52	#FFFFFF	#000000	##FFFFFF
##172D52	1.00	13.69	1.53	13.69
#FFFFFF	13.69	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C3053

Deuteranopia (green-blind)

#132B51

Tritanopia (blue-blind)

#00353B

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172d52;
/* rgb */ color: rgb(23, 45, 82);
/* oklch */ color: oklch(30.0% 0.073 260.2);

Tailwind

colors: {
  custom: {
    50: '#5c6583',
    500: '#172d52',
    950: '#000000',
  },
}

SCSS

$custom: #172d52;
$custom-light: #5c6583;
$custom-dark: #000000;

JSON

{
  "hex": "#172d52",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 82
  },
  "hsl": {
    "h": 217.627,
    "s": 56.19,
    "l": 20.588
  },
  "oklch": {
    "l": 0.30041,
    "c": 0.07291,
    "h": 260.2
  },
  "luminance": 0.02668
}

Semantic roles & 50–950 ramp

primary

#172D52

secondary

#896C3C

accent

#A748DF

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04050A

muted

#797A7C

Preview Lab

Preview with #172D52

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

Preview Lab → · Contrast checker → · Palette generator →