#172C56#172C56

#172C56 is a dark, moderate blue. Relative luminance 0.027; OKLCH L 30.1% C 0.081 H 262.6°. Best body text is #FFFFFF at 13.72:1 contrast (WCAG AA passes).

Color values

HEX	#172C56
RGB	rgb(23, 44, 86)
HSL	hsl(220, 58%, 21%)
HSV	hsv(220, 73%, 34%)
CMYK	cmyk(73.3%, 48.8%, 0%, 66.3%)
CIE-LAB	lab(18.61, 7.67, -27.97)
CIE-LCH	lch(18.61, 29.00, 285.33°)
OKLab	oklab(30.09% -0.0104 -0.08)
OKLCH	oklch(30.09% 0.081 262.6)
XYZ	xyz(2.9332, 2.6551, 9.1602)
Luminance	0.0266 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C56 #564117

analogous

#174C56 #172C56 #221756

triadic

#172C56 #56172C #2C5617

tetradic

#172C56 #56174C #564117 #175622

square

#172C56 #56174C #564117 #175622

split-complementary

#172C56 #562217 #4C5617

monochromatic

#060C18 #0A1326 #172C56 #244586 #315DB7

Accessibility & contrast

On white

13.72

#172C56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.53

#172C56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C56

13.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C56	#FFFFFF	#000000	##FFFFFF
##172C56	1.00	13.72	1.53	13.72
#FFFFFF	13.72	1.00	21.00	1.00
#000000	1.53	21.00	1.00	21.00
##FFFFFF	13.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#173058

Deuteranopia (green-blind)

#0C2B55

Tritanopia (blue-blind)

#00363C

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172c56;
/* rgb */ color: rgb(23, 44, 86);
/* oklch */ color: oklch(30.1% 0.081 262.6);

Tailwind

colors: {
  custom: {
    50: '#5d6486',
    500: '#172c56',
    950: '#000000',
  },
}

SCSS

$custom: #172c56;
$custom-light: #5d6486;
$custom-dark: #000000;

JSON

{
  "hex": "#172c56",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 86
  },
  "hsl": {
    "h": 220,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.30086,
    "c": 0.08067,
    "h": 262.6
  },
  "luminance": 0.02655
}

Semantic roles & 50–950 ramp

primary

#172C56

secondary

#8D723C

accent

#AE47E1

background

#F5F5F8

surface

#E9EAEF

border

#C5C6CA

text

#04050B

muted

#79797C

Preview Lab

Preview with #172C56

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

Preview Lab → · Contrast checker → · Palette generator →