#172C73#172C73

#172C73 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.6% C 0.125 H 266.6°. Best body text is #FFFFFF at 12.77:1 contrast (WCAG AA passes).

Color values

HEX	#172C73
RGB	rgb(23, 44, 115)
HSL	hsl(226, 67%, 27%)
HSV	hsv(226, 80%, 45%)
CMYK	cmyk(80%, 61.7%, 0%, 54.9%)
CIE-LAB	lab(20.91, 19.73, -43.23)
CIE-LCH	lch(20.91, 47.52, 294.53°)
OKLab	oklab(32.56% -0.0074 -0.1249)
OKLCH	oklch(32.56% 0.125 266.6)
XYZ	xyz(4.3475, 3.2208, 16.6089)
Luminance	0.0322 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C73 #735E17

analogous

#175A73 #172C73 #301773

triadic

#172C73 #73172C #2C7317

tetradic

#172C73 #73175A #735E17 #177330

square

#172C73 #73175A #735E17 #177330

split-complementary

#172C73 #733017 #5A7317

monochromatic

#050A1A #0D1840 #172C73 #2140A6 #2F55D5

Accessibility & contrast

On white

12.77

#172C73 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#172C73 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C73

12.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C73	#FFFFFF	#000000	##FFFFFF
##172C73	1.00	12.77	1.64	12.77
#FFFFFF	12.77	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003775

Deuteranopia (green-blind)

#002E72

Tritanopia (blue-blind)

#003E4B

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172c73;
/* rgb */ color: rgb(23, 44, 115);
/* oklch */ color: oklch(32.6% 0.125 266.6);

Tailwind

colors: {
  custom: {
    50: '#64649c',
    500: '#172c73',
    950: '#000000',
  },
}

SCSS

$custom: #172c73;
$custom-light: #64649c;
$custom-dark: #000000;

JSON

{
  "hex": "#172c73",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 115
  },
  "hsl": {
    "h": 226.304,
    "s": 66.667,
    "l": 27.059
  },
  "oklch": {
    "l": 0.32559,
    "c": 0.12508,
    "h": 266.6
  },
  "luminance": 0.03221
}

Semantic roles & 50–950 ramp

primary

#172C73

secondary

#A9903D

accent

#C23EEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #172C73

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

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