#171A5D#171A5D

#171A5D is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.7% C 0.117 H 273.3°. Best body text is #FFFFFF at 15.65:1 contrast (WCAG AA passes).

Color values

HEX	#171A5D
RGB	rgb(23, 26, 93)
HSL	hsl(237, 60%, 23%)
HSV	hsv(237, 75%, 36%)
CMYK	cmyk(75.3%, 72%, 0%, 63.5%)
CIE-LAB	lab(13.89, 23.68, -40.30)
CIE-LCH	lch(13.89, 46.74, 300.44°)
OKLab	oklab(26.74% 0.0068 -0.1165)
OKLCH	oklch(26.74% 0.117 273.3)
XYZ	xyz(2.6979, 1.7110, 10.5419)
Luminance	0.0171 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A5D #5D5A17

analogous

#173D5D #171A5D #37175D

triadic

#171A5D #5D171A #1A5D17

tetradic

#171A5D #5D173D #5D5A17 #175D37

square

#171A5D #5D173D #5D5A17 #175D37

split-complementary

#171A5D #5D3717 #3D5D17

monochromatic

#060719 #0B0C2C #171A5D #23288E #2F35BF

Accessibility & contrast

On white

15.65

#171A5D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.34

#171A5D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A5D

15.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A5D	#FFFFFF	#000000	##FFFFFF
##171A5D	1.00	15.65	1.34	15.65
#FFFFFF	15.65	1.00	21.00	1.00
#000000	1.34	21.00	1.00	21.00
##FFFFFF	15.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00275F

Deuteranopia (green-blind)

#00205C

Tritanopia (blue-blind)

#002C39

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #171a5d;
/* rgb */ color: rgb(23, 26, 93);
/* oklch */ color: oklch(26.7% 0.117 273.3);

Tailwind

colors: {
  custom: {
    50: '#60568c',
    500: '#171a5d',
    950: '#000000',
  },
}

SCSS

$custom: #171a5d;
$custom-light: #60568c;
$custom-dark: #000000;

JSON

{
  "hex": "#171a5d",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 93
  },
  "hsl": {
    "h": 237.429,
    "s": 60.345,
    "l": 22.745
  },
  "oklch": {
    "l": 0.26742,
    "c": 0.11666,
    "h": 273.3
  },
  "luminance": 0.01711
}

Semantic roles & 50–950 ramp

primary

#171A5D

secondary

#94903C

accent

#DD44E3

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #171A5D

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

Preview Lab → · Contrast checker → · Palette generator →