#171A5A#171A5A

#171A5A is a dark, moderate blue. Relative luminance 0.017; OKLCH L 26.4% C 0.112 H 273.6°. Best body text is #FFFFFF at 15.77:1 contrast (WCAG AA passes).

Color values

HEX	#171A5A
RGB	rgb(23, 26, 90)
HSL	hsl(237, 59%, 22%)
HSV	hsv(237, 74%, 35%)
CMYK	cmyk(74.4%, 71.1%, 0%, 64.7%)
CIE-LAB	lab(13.58, 22.51, -38.79)
CIE-LCH	lch(13.58, 44.85, 300.12°)
OKLab	oklab(26.43% 0.0071 -0.112)
OKLCH	oklch(26.43% 0.112 273.6)
XYZ	xyz(2.5676, 1.6589, 9.8558)
Luminance	0.0166 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A5A #5A5717

analogous

#173C5A #171A5A #35175A

triadic

#171A5A #5A171A #1A5A17

tetradic

#171A5A #5A173C #5A5717 #175A35

square

#171A5A #5A173C #5A5717 #175A35

split-complementary

#171A5A #5A3517 #3C5A17

monochromatic

#060718 #0B0C29 #171A5A #23288B #3036BB

Accessibility & contrast

On white

15.77

#171A5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.33

#171A5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A5A

15.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A5A	#FFFFFF	#000000	##FFFFFF
##171A5A	1.00	15.77	1.33	15.77
#FFFFFF	15.77	1.00	21.00	1.00
#000000	1.33	21.00	1.00	21.00
##FFFFFF	15.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00265C

Deuteranopia (green-blind)

#002059

Tritanopia (blue-blind)

#002B37

Achromatopsia (no color)

#232323

Design tokens & code

CSS

--color: #171a5a;
/* rgb */ color: rgb(23, 26, 90);
/* oklch */ color: oklch(26.4% 0.112 273.6);

Tailwind

colors: {
  custom: {
    50: '#5f5689',
    500: '#171a5a',
    950: '#000000',
  },
}

SCSS

$custom: #171a5a;
$custom-light: #5f5689;
$custom-dark: #000000;

JSON

{
  "hex": "#171a5a",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 90
  },
  "hsl": {
    "h": 237.313,
    "s": 59.292,
    "l": 22.157
  },
  "oklch": {
    "l": 0.26426,
    "c": 0.11227,
    "h": 273.6
  },
  "luminance": 0.01659
}

Semantic roles & 50–950 ramp

primary

#171A5A

secondary

#918D3C

accent

#DB45E2

background

#F5F5F8

surface

#EAE9F0

border

#C6C5CB

text

#05030C

muted

#79787D

Preview Lab

Preview with #171A5A

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

Preview Lab → · Contrast checker → · Palette generator →