#172F54#172F54

#172F54 is a dark, moderate blue. Relative luminance 0.029; OKLCH L 30.7% C 0.073 H 258.8°. Best body text is #FFFFFF at 13.37:1 contrast (WCAG AA passes).

Color values

HEX	#172F54
RGB	rgb(23, 47, 84)
HSL	hsl(216, 57%, 21%)
HSV	hsv(216, 73%, 33%)
CMYK	cmyk(72.6%, 44%, 0%, 67.1%)
CIE-LAB	lab(19.45, 4.66, -25.28)
CIE-LCH	lch(19.45, 25.71, 280.45°)
OKLab	oklab(30.7% -0.0142 -0.072)
OKLCH	oklch(30.7% 0.073 258.8)
XYZ	xyz(2.9695, 2.8550, 8.7804)
Luminance	0.0285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F54 #543C17

analogous

#174D54 #172F54 #1D1754

triadic

#172F54 #54172F #2F5417

tetradic

#172F54 #54174D #543C17 #17541D

square

#172F54 #54174D #543C17 #17541D

split-complementary

#172F54 #541D17 #4D5417

monochromatic

#070D18 #0A1424 #172F54 #244A84 #3165B4

Accessibility & contrast

On white

13.37

#172F54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#172F54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F54

13.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F54	#FFFFFF	#000000	##FFFFFF
##172F54	1.00	13.37	1.57	13.37
#FFFFFF	13.37	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E3255

Deuteranopia (green-blind)

#152D53

Tritanopia (blue-blind)

#00383D

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172f54;
/* rgb */ color: rgb(23, 47, 84);
/* oklch */ color: oklch(30.7% 0.073 258.8);

Tailwind

colors: {
  custom: {
    50: '#5c6784',
    500: '#172f54',
    950: '#000000',
  },
}

SCSS

$custom: #172f54;
$custom-light: #5c6784;
$custom-dark: #000000;

JSON

{
  "hex": "#172f54",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 84
  },
  "hsl": {
    "h": 216.393,
    "s": 57.009,
    "l": 20.98
  },
  "oklch": {
    "l": 0.30697,
    "c": 0.07344,
    "h": 258.8
  },
  "luminance": 0.02855
}

Semantic roles & 50–950 ramp

primary

#172F54

secondary

#8B6C3C

accent

#A448E0

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #172F54

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

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