#171E59#171E59

#171E59 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.1% C 0.105 H 272.1°. Best body text is #FFFFFF at 15.37:1 contrast (WCAG AA passes).

Color values

HEX	#171E59
RGB	rgb(23, 30, 89)
HSL	hsl(234, 59%, 22%)
HSV	hsv(234, 74%, 35%)
CMYK	cmyk(74.2%, 66.3%, 0%, 65.1%)
CIE-LAB	lab(14.58, 19.24, -36.49)
CIE-LCH	lch(14.58, 41.26, 297.80°)
OKLab	oklab(27.12% 0.0039 -0.1053)
OKLCH	oklch(27.12% 0.105 272.1)
XYZ	xyz(2.6202, 1.8317, 9.6647)
Luminance	0.0183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E59 #595217

analogous

#173F59 #171E59 #311759

triadic

#171E59 #59171E #1E5917

tetradic

#171E59 #59173F #595217 #175931

square

#171E59 #59173F #595217 #175931

split-complementary

#171E59 #593117 #3F5917

monochromatic

#060818 #0A0E28 #171E59 #242E8A #303FBA

Accessibility & contrast

On white

15.37

#171E59 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#171E59 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E59

15.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E59	#FFFFFF	#000000	##FFFFFF
##171E59	1.00	15.37	1.37	15.37
#FFFFFF	15.37	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00285B

Deuteranopia (green-blind)

#002258

Tritanopia (blue-blind)

#002D38

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171e59;
/* rgb */ color: rgb(23, 30, 89);
/* oklch */ color: oklch(27.1% 0.105 272.1);

Tailwind

colors: {
  custom: {
    50: '#5e5988',
    500: '#171e59',
    950: '#000000',
  },
}

SCSS

$custom: #171e59;
$custom-light: #5e5988;
$custom-dark: #000000;

JSON

{
  "hex": "#171e59",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 89
  },
  "hsl": {
    "h": 233.636,
    "s": 58.929,
    "l": 21.961
  },
  "oklch": {
    "l": 0.27124,
    "c": 0.10535,
    "h": 272.1
  },
  "luminance": 0.01832
}

Semantic roles & 50–950 ramp

primary

#171E59

secondary

#90873C

accent

#D246E2

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030B

muted

#79787C

Preview Lab

Preview with #171E59

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

Preview Lab → · Contrast checker → · Palette generator →