#171E78#171E78

#171E78 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.4% C 0.149 H 270.3°. Best body text is #FFFFFF at 14.06:1 contrast (WCAG AA passes).

Color values

HEX	#171E78
RGB	rgb(23, 30, 120)
HSL	hsl(236, 68%, 28%)
HSV	hsv(236, 81%, 47%)
CMYK	cmyk(80.8%, 75%, 0%, 52.9%)
CIE-LAB	lab(17.77, 31.32, -51.59)
CIE-LCH	lch(17.77, 60.35, 301.26°)
OKLab	oklab(30.41% 0.0008 -0.1494)
OKLCH	oklch(30.41% 0.149 270.3)
XYZ	xyz(4.2066, 2.4663, 18.0200)
Luminance	0.0247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E78 #787117

analogous

#174E78 #171E78 #401778

triadic

#171E78 #78171E #1E7817

tetradic

#171E78 #78174E #787117 #177840

square

#171E78 #78174E #787117 #177840

split-complementary

#171E78 #784017 #4E7817

monochromatic

#05061A #0D1145 #171E78 #212BAB #323ED8

Accessibility & contrast

On white

14.06

#171E78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#171E78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E78

14.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E78	#FFFFFF	#000000	##FFFFFF
##171E78	1.00	14.06	1.49	14.06
#FFFFFF	14.06	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307B

Deuteranopia (green-blind)

#002776

Tritanopia (blue-blind)

#003849

Achromatopsia (no color)

#2B2B2B

Design tokens & code

CSS

--color: #171e78;
/* rgb */ color: rgb(23, 30, 120);
/* oklch */ color: oklch(30.4% 0.149 270.3);

Tailwind

colors: {
  custom: {
    50: '#675aa0',
    500: '#171e78',
    950: '#000000',
  },
}

SCSS

$custom: #171e78;
$custom-light: #675aa0;
$custom-dark: #000000;

JSON

{
  "hex": "#171e78",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 120
  },
  "hsl": {
    "h": 235.67,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.30409,
    "c": 0.1494,
    "h": 270.3
  },
  "luminance": 0.02467
}

Semantic roles & 50–950 ramp

primary

#171E78

secondary

#ADA53E

accent

#DE3DEB

background

#F6F5FA

surface

#EBE9F3

border

#C6C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #171E78

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

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