#171A78#171A78

#171A78 is a dark, vivid blue. Relative luminance 0.023; OKLCH L 29.8% C 0.154 H 270.9°. Best body text is #FFFFFF at 14.43:1 contrast (WCAG AA passes).

Color values

HEX	#171A78
RGB	rgb(23, 26, 120)
HSL	hsl(238, 68%, 28%)
HSV	hsv(238, 81%, 47%)
CMYK	cmyk(80.8%, 78.3%, 0%, 52.9%)
CIE-LAB	lab(16.88, 33.81, -53.06)
CIE-LCH	lch(16.88, 62.92, 302.51°)
OKLab	oklab(29.78% 0.0025 -0.1536)
OKLCH	oklch(29.78% 0.154 270.9)
XYZ	xyz(4.1118, 2.2766, 17.9884)
Luminance	0.0228 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A78 #787517

analogous

#174A78 #171A78 #441778

triadic

#171A78 #78171A #1A7817

tetradic

#171A78 #78174A #787517 #177844

square

#171A78 #78174A #787517 #177844

split-complementary

#171A78 #784417 #4A7817

monochromatic

#05061A #0D0F45 #171A78 #2125AB #3237D8

Accessibility & contrast

On white

14.43

#171A78 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#171A78 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A78

14.43:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A78	#FFFFFF	#000000	##FFFFFF
##171A78	1.00	14.43	1.46	14.43
#FFFFFF	14.43	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.43	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002E7B

Deuteranopia (green-blind)

#002576

Tritanopia (blue-blind)

#003648

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #171a78;
/* rgb */ color: rgb(23, 26, 120);
/* oklch */ color: oklch(29.8% 0.154 270.9);

Tailwind

colors: {
  custom: {
    50: '#6758a0',
    500: '#171a78',
    950: '#000000',
  },
}

SCSS

$custom: #171a78;
$custom-light: #6758a0;
$custom-dark: #000000;

JSON

{
  "hex": "#171a78",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 120
  },
  "hsl": {
    "h": 238.144,
    "s": 67.832,
    "l": 28.039
  },
  "oklch": {
    "l": 0.29775,
    "c": 0.15366,
    "h": 270.9
  },
  "luminance": 0.02277
}

Semantic roles & 50–950 ramp

primary

#171A78

secondary

#ADAA3E

accent

#E53DEB

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171A78

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

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