#172C71#172C71

#172C71 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.4% C 0.122 H 266.5°. Best body text is #FFFFFF at 12.84:1 contrast (WCAG AA passes).

Color values

HEX	#172C71
RGB	rgb(23, 44, 113)
HSL	hsl(226, 66%, 27%)
HSV	hsv(226, 80%, 44%)
CMYK	cmyk(79.6%, 61.1%, 0%, 55.7%)
CIE-LAB	lab(20.73, 18.91, -42.23)
CIE-LCH	lch(20.73, 46.27, 294.12°)
OKLab	oklab(32.37% -0.0074 -0.1219)
OKLCH	oklch(32.37% 0.122 266.5)
XYZ	xyz(4.2336, 3.1753, 16.0094)
Luminance	0.0318 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C71 #715C17

analogous

#175971 #172C71 #2F1771

triadic

#172C71 #71172C #2C7117

tetradic

#172C71 #711759 #715C17 #17712F

square

#172C71 #711759 #715C17 #17712F

split-complementary

#172C71 #712F17 #597117

monochromatic

#050A19 #0D183E #172C71 #2140A4 #2E55D4

Accessibility & contrast

On white

12.84

#172C71 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.64

#172C71 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C71

12.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C71	#FFFFFF	#000000	##FFFFFF
##172C71	1.00	12.84	1.64	12.84
#FFFFFF	12.84	1.00	21.00	1.00
#000000	1.64	21.00	1.00	21.00
##FFFFFF	12.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003673

Deuteranopia (green-blind)

#002E70

Tritanopia (blue-blind)

#003D4A

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172c71;
/* rgb */ color: rgb(23, 44, 113);
/* oklch */ color: oklch(32.4% 0.122 266.5);

Tailwind

colors: {
  custom: {
    50: '#64649a',
    500: '#172c71',
    950: '#000000',
  },
}

SCSS

$custom: #172c71;
$custom-light: #64649a;
$custom-dark: #000000;

JSON

{
  "hex": "#172c71",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 113
  },
  "hsl": {
    "h": 226,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.32373,
    "c": 0.12215,
    "h": 266.5
  },
  "luminance": 0.03176
}

Semantic roles & 50–950 ramp

primary

#172C71

secondary

#A78E3D

accent

#C13FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #172C71

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

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