#171973#171973

#171973 is a dark, vivid blue. Relative luminance 0.021; OKLCH L 29.0% C 0.148 H 271.5°. Best body text is #FFFFFF at 14.76:1 contrast (WCAG AA passes).

Color values

HEX	#171973
RGB	rgb(23, 25, 115)
HSL	hsl(239, 67%, 27%)
HSV	hsv(239, 80%, 45%)
CMYK	cmyk(80%, 78.3%, 0%, 54.9%)
CIE-LAB	lab(16.08, 32.62, -51.16)
CIE-LCH	lch(16.08, 60.67, 302.52°)
OKLab	oklab(29.04% 0.0039 -0.1481)
OKLCH	oklch(29.04% 0.148 271.5)
XYZ	xyz(3.7944, 2.1148, 16.4246)
Luminance	0.0211 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171973 #737117

analogous

#174773 #171973 #431773

triadic

#171973 #731719 #197317

tetradic

#171973 #731747 #737117 #177343

square

#171973 #731747 #737117 #177343

split-complementary

#171973 #734317 #477317

monochromatic

#05061A #0D0E40 #171973 #2124A6 #2F33D5

Accessibility & contrast

On white

14.76

#171973 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.42

#171973 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171973

14.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171973	#FFFFFF	#000000	##FFFFFF
##171973	1.00	14.76	1.42	14.76
#FFFFFF	14.76	1.00	21.00	1.00
#000000	1.42	21.00	1.00	21.00
##FFFFFF	14.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002C76

Deuteranopia (green-blind)

#002371

Tritanopia (blue-blind)

#003345

Achromatopsia (no color)

#282828

Design tokens & code

CSS

--color: #171973;
/* rgb */ color: rgb(23, 25, 115);
/* oklch */ color: oklch(29.0% 0.148 271.5);

Tailwind

colors: {
  custom: {
    50: '#66579c',
    500: '#171973',
    950: '#000000',
  },
}

SCSS

$custom: #171973;
$custom-light: #66579c;
$custom-dark: #000000;

JSON

{
  "hex": "#171973",
  "rgb": {
    "r": 23,
    "g": 25,
    "b": 115
  },
  "hsl": {
    "h": 238.696,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.29038,
    "c": 0.14816,
    "h": 271.5
  },
  "luminance": 0.02115
}

Semantic roles & 50–950 ramp

primary

#171973

secondary

#A9A63D

accent

#E63EEA

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#07030E

muted

#7A787E

Preview Lab

Preview with #171973

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

Preview Lab → · Contrast checker → · Palette generator →