#171E79#171E79

#171E79 is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.151 H 270.2°. Best body text is #FFFFFF at 14.02:1 contrast (WCAG AA passes).

Color values

HEX	#171E79
RGB	rgb(23, 30, 121)
HSL	hsl(236, 68%, 28%)
HSV	hsv(236, 81%, 47%)
CMYK	cmyk(81%, 75.2%, 0%, 52.5%)
CIE-LAB	lab(17.88, 31.69, -52.05)
CIE-LCH	lch(17.88, 60.94, 301.34°)
OKLab	oklab(30.52% 0.0006 -0.1507)
OKLCH	oklch(30.52% 0.151 270.2)
XYZ	xyz(4.2676, 2.4907, 18.3413)
Luminance	0.0249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E79 #797217

analogous

#174F79 #171E79 #411779

triadic

#171E79 #79171E #1E7917

tetradic

#171E79 #79174F #797217 #177941

square

#171E79 #79174F #797217 #177941

split-complementary

#171E79 #794117 #4F7917

monochromatic

#05061A #0D1146 #171E79 #212BAC #323ED8

Accessibility & contrast

On white

14.02

#171E79 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#171E79 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E79

14.02:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E79	#FFFFFF	#000000	##FFFFFF
##171E79	1.00	14.02	1.50	14.02
#FFFFFF	14.02	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.02	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317C

Deuteranopia (green-blind)

#002777

Tritanopia (blue-blind)

#003849

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #171e79;
/* rgb */ color: rgb(23, 30, 121);
/* oklch */ color: oklch(30.5% 0.151 270.2);

Tailwind

colors: {
  custom: {
    50: '#675aa1',
    500: '#171e79',
    950: '#000000',
  },
}

SCSS

$custom: #171e79;
$custom-light: #675aa1;
$custom-dark: #000000;

JSON

{
  "hex": "#171e79",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 121
  },
  "hsl": {
    "h": 235.714,
    "s": 68.056,
    "l": 28.235
  },
  "oklch": {
    "l": 0.30521,
    "c": 0.15073,
    "h": 270.2
  },
  "luminance": 0.02491
}

Semantic roles & 50–950 ramp

primary

#171E79

secondary

#AEA63E

accent

#DE3DEB

background

#F6F5FA

surface

#ECE9F3

border

#C7C5CD

text

#07040F

muted

#7A797F

Preview Lab

Preview with #171E79

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

Preview Lab → · Contrast checker → · Palette generator →