#172D54#172D54

#172D54 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.2% C 0.076 H 260.9°. Best body text is #FFFFFF at 13.64:1 contrast (WCAG AA passes).

Color values

HEX	#172D54
RGB	rgb(23, 45, 84)
HSL	hsl(218, 57%, 21%)
HSV	hsv(218, 73%, 33%)
CMYK	cmyk(72.6%, 46.4%, 0%, 67.1%)
CIE-LAB	lab(18.79, 6.11, -26.33)
CIE-LCH	lch(18.79, 27.03, 283.06°)
OKLab	oklab(30.19% -0.012 -0.0751)
OKLCH	oklch(30.19% 0.076 260.9)
XYZ	xyz(2.8914, 2.6987, 8.7543)
Luminance	0.0270 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D54 #543E17

analogous

#174B54 #172D54 #1F1754

triadic

#172D54 #54172D #2D5417

tetradic

#172D54 #54174B #543E17 #17541F

square

#172D54 #54174B #543E17 #17541F

split-complementary

#172D54 #541F17 #4B5417

monochromatic

#070D18 #0A1324 #172D54 #244784 #3160B4

Accessibility & contrast

On white

13.64

#172D54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.54

#172D54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D54

13.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D54	#FFFFFF	#000000	##FFFFFF
##172D54	1.00	13.64	1.54	13.64
#FFFFFF	13.64	1.00	21.00	1.00
#000000	1.54	21.00	1.00	21.00
##FFFFFF	13.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3156

Deuteranopia (green-blind)

#112B53

Tritanopia (blue-blind)

#00363C

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172d54;
/* rgb */ color: rgb(23, 45, 84);
/* oklch */ color: oklch(30.2% 0.076 260.9);

Tailwind

colors: {
  custom: {
    50: '#5c6584',
    500: '#172d54',
    950: '#000000',
  },
}

SCSS

$custom: #172d54;
$custom-light: #5c6584;
$custom-dark: #000000;

JSON

{
  "hex": "#172d54",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 84
  },
  "hsl": {
    "h": 218.361,
    "s": 57.009,
    "l": 20.98
  },
  "oklch": {
    "l": 0.30187,
    "c": 0.0761,
    "h": 260.9
  },
  "luminance": 0.02699
}

Semantic roles & 50–950 ramp

primary

#172D54

secondary

#8B6E3C

accent

#A948E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04050B

muted

#797A7C

Preview Lab

Preview with #172D54

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

Preview Lab → · Contrast checker → · Palette generator →