#171979#171979

#171979 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.7% C 0.156 H 271.0°. Best body text is #FFFFFF at 14.47:1 contrast (WCAG AA passes).

Color values

HEX	#171979
RGB	rgb(23, 25, 121)
HSL	hsl(239, 68%, 28%)
HSV	hsv(239, 81%, 47%)
CMYK	cmyk(81%, 79.3%, 0%, 52.5%)
CIE-LAB	lab(16.78, 34.77, -53.85)
CIE-LCH	lch(16.78, 64.10, 302.85°)
OKLab	oklab(29.74% 0.0027 -0.1559)
OKLCH	oklch(29.74% 0.156 271)
XYZ	xyz(4.1510, 2.2574, 18.3024)
Luminance	0.0226 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171979 #797717

analogous

#174A79 #171979 #461779

triadic

#171979 #791719 #197917

tetradic

#171979 #79174A #797717 #177946

square

#171979 #79174A #797717 #177946

split-complementary

#171979 #794617 #4A7917

monochromatic

#05051A #0D0E46 #171979 #2124AC #3236D8

Accessibility & contrast

On white

14.47

#171979 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#171979 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171979

14.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171979	#FFFFFF	#000000	##FFFFFF
##171979	1.00	14.47	1.45	14.47
#FFFFFF	14.47	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7C

Deuteranopia (green-blind)

#002477

Tritanopia (blue-blind)

#003648

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171979;
/* rgb */ color: rgb(23, 25, 121);
/* oklch */ color: oklch(29.7% 0.156 271.0);

Tailwind

colors: {
  custom: {
    50: '#6857a1',
    500: '#171979',
    950: '#000000',
  },
}

SCSS

$custom: #171979;
$custom-light: #6857a1;
$custom-dark: #000000;

JSON

{
  "hex": "#171979",
  "rgb": {
    "r": 23,
    "g": 25,
    "b": 121
  },
  "hsl": {
    "h": 238.776,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.29745,
    "c": 0.15596,
    "h": 271
  },
  "luminance": 0.02258
}

Semantic roles & 50–950 ramp

primary

#171979

secondary

#AEAC3E

accent

#E73DEB

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171979

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

Preview Lab → · Contrast checker → · Palette generator →