#172F61#172F61

#172F61 is a dark, moderate blue. Relative luminance 0.031; OKLCH L 31.7% C 0.094 H 262.9°. Best body text is #FFFFFF at 13.00:1 contrast (WCAG AA passes).

Color values

HEX	#172F61
RGB	rgb(23, 47, 97)
HSL	hsl(221, 62%, 24%)
HSV	hsv(221, 76%, 38%)
CMYK	cmyk(76.3%, 51.5%, 0%, 62%)
CIE-LAB	lab(20.35, 10.07, -32.45)
CIE-LCH	lch(20.35, 33.97, 287.25°)
OKLab	oklab(31.68% -0.0116 -0.0931)
OKLCH	oklch(31.68% 0.094 262.9)
XYZ	xyz(3.5268, 3.0779, 11.7152)
Luminance	0.0308 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172F61 #614917

analogous

#175461 #172F61 #241761

triadic

#172F61 #61172F #2F6117

tetradic

#172F61 #611754 #614917 #176124

square

#172F61 #611754 #614917 #176124

split-complementary

#172F61 #612417 #546117

monochromatic

#060C19 #0B1730 #172F61 #234792 #2E5FC4

Accessibility & contrast

On white

13.00

#172F61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#172F61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172F61

13.00:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172F61	#FFFFFF	#000000	##FFFFFF
##172F61	1.00	13.00	1.62	13.00
#FFFFFF	13.00	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	13.00	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#133563

Deuteranopia (green-blind)

#012E60

Tritanopia (blue-blind)

#003B43

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #172f61;
/* rgb */ color: rgb(23, 47, 97);
/* oklch */ color: oklch(31.7% 0.094 262.9);

Tailwind

colors: {
  custom: {
    50: '#5f678e',
    500: '#172f61',
    950: '#000000',
  },
}

SCSS

$custom: #172f61;
$custom-light: #5f678e;
$custom-dark: #000000;

JSON

{
  "hex": "#172f61",
  "rgb": {
    "r": 23,
    "g": 47,
    "b": 97
  },
  "hsl": {
    "h": 220.541,
    "s": 61.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.3168,
    "c": 0.09382,
    "h": 262.9
  },
  "luminance": 0.03078
}

Semantic roles & 50–950 ramp

primary

#172F61

secondary

#987A3C

accent

#B043E5

background

#F5F6F8

surface

#EAEBF0

border

#C6C6CB

text

#05060C

muted

#797A7D

Preview Lab

Preview with #172F61

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

Preview Lab → · Contrast checker → · Palette generator →