#172E78#172E78

#172E78 is a dark, vivid blue. Relative luminance 0.035; OKLCH L 33.4% C 0.130 H 266.2°. Best body text is #FFFFFF at 12.36:1 contrast (WCAG AA passes).

Color values

HEX	#172E78
RGB	rgb(23, 46, 120)
HSL	hsl(226, 68%, 28%)
HSV	hsv(226, 81%, 47%)
CMYK	cmyk(80.8%, 61.7%, 0%, 52.9%)
CIE-LAB	lab(21.91, 20.35, -44.78)
CIE-LCH	lch(21.91, 49.19, 294.44°)
OKLab	oklab(33.45% -0.0087 -0.1294)
OKLCH	oklch(33.45% 0.13 266.2)
XYZ	xyz(4.7193, 3.4917, 18.1909)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172E78 #786117

analogous

#175E78 #172E78 #301778

triadic

#172E78 #78172E #2E7817

tetradic

#172E78 #78175E #786117 #177830

square

#172E78 #78175E #786117 #177830

split-complementary

#172E78 #783017 #5E7817

monochromatic

#050A1A #0D1A45 #172E78 #2142AB #3259D8

Accessibility & contrast

On white

12.36

#172E78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#172E78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172E78

12.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172E78	#FFFFFF	#000000	##FFFFFF
##172E78	1.00	12.36	1.70	12.36
#FFFFFF	12.36	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00397A

Deuteranopia (green-blind)

#003077

Tritanopia (blue-blind)

#00414E

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #172e78;
/* rgb */ color: rgb(23, 46, 120);
/* oklch */ color: oklch(33.4% 0.130 266.2);

Tailwind

colors: {
  custom: {
    50: '#6566a0',
    500: '#172e78',
    950: '#000000',
  },
}

SCSS

$custom: #172e78;
$custom-light: #6566a0;
$custom-dark: #000000;

JSON

{
  "hex": "#172e78",
  "rgb": {
    "r": 23,
    "g": 46,
    "b": 120
  },
  "hsl": {
    "h": 225.773,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.33447,
    "c": 0.12968,
    "h": 266.2
  },
  "luminance": 0.03492
}

Semantic roles & 50–950 ramp

primary

#172E78

secondary

#AD933E

accent

#C23DEB

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#07050F

muted

#7A7A7E

Preview Lab

Preview with #172E78

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

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