#172C70#172C70

#172C70 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 32.3% C 0.121 H 266.5°. Best body text is #FFFFFF at 12.88:1 contrast (WCAG AA passes).

Color values

HEX	#172C70
RGB	rgb(23, 44, 112)
HSL	hsl(226, 66%, 26%)
HSV	hsv(226, 79%, 44%)
CMYK	cmyk(79.5%, 60.7%, 0%, 56.1%)
CIE-LAB	lab(20.65, 18.50, -41.73)
CIE-LCH	lch(20.65, 45.64, 293.91°)
OKLab	oklab(32.28% -0.0075 -0.1204)
OKLCH	oklch(32.28% 0.121 266.5)
XYZ	xyz(4.1776, 3.1529, 15.7145)
Luminance	0.0315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C70 #705B17

analogous

#175970 #172C70 #2F1770

triadic

#172C70 #70172C #2C7017

tetradic

#172C70 #701759 #705B17 #17702F

square

#172C70 #701759 #705B17 #17702F

split-complementary

#172C70 #702F17 #597017

monochromatic

#050A19 #0D183D #172C70 #2140A3 #2D55D4

Accessibility & contrast

On white

12.88

#172C70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#172C70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C70

12.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C70	#FFFFFF	#000000	##FFFFFF
##172C70	1.00	12.88	1.63	12.88
#FFFFFF	12.88	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003672

Deuteranopia (green-blind)

#002E6F

Tritanopia (blue-blind)

#003D49

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #172c70;
/* rgb */ color: rgb(23, 44, 112);
/* oklch */ color: oklch(32.3% 0.121 266.5);

Tailwind

colors: {
  custom: {
    50: '#63649a',
    500: '#172c70',
    950: '#000000',
  },
}

SCSS

$custom: #172c70;
$custom-light: #63649a;
$custom-dark: #000000;

JSON

{
  "hex": "#172c70",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 112
  },
  "hsl": {
    "h": 225.843,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.32282,
    "c": 0.12067,
    "h": 266.5
  },
  "luminance": 0.03153
}

Semantic roles & 50–950 ramp

primary

#172C70

secondary

#A68D3D

accent

#C13FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06050E

muted

#7A7A7E

Preview Lab

Preview with #172C70

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

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