#171F54#171F54

#171F54 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 26.9% C 0.096 H 271.8°. Best body text is #FFFFFF at 15.44:1 contrast (WCAG AA passes).

Color values

HEX	#171F54
RGB	rgb(23, 31, 84)
HSL	hsl(232, 57%, 21%)
HSV	hsv(232, 73%, 33%)
CMYK	cmyk(72.6%, 63.1%, 0%, 67.1%)
CIE-LAB	lab(14.41, 16.47, -33.39)
CIE-LCH	lch(14.41, 37.24, 296.26°)
OKLab	oklab(26.86% 0.003 -0.0961)
OKLCH	oklch(26.86% 0.096 271.8)
XYZ	xyz(2.4430, 1.8020, 8.6049)
Luminance	0.0180 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F54 #544C17

analogous

#173D54 #171F54 #2D1754

triadic

#171F54 #54171F #1F5417

tetradic

#171F54 #54173D #544C17 #17542D

square

#171F54 #54173D #544C17 #17542D

split-complementary

#171F54 #542D17 #3D5417

monochromatic

#070918 #0A0D24 #171F54 #243184 #3142B4

Accessibility & contrast

On white

15.44

#171F54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#171F54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F54

15.44:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F54	#FFFFFF	#000000	##FFFFFF
##171F54	1.00	15.44	1.36	15.44
#FFFFFF	15.44	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.44	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002756

Deuteranopia (green-blind)

#002253

Tritanopia (blue-blind)

#002C36

Achromatopsia (no color)

#242424

Design tokens & code

CSS

--color: #171f54;
/* rgb */ color: rgb(23, 31, 84);
/* oklch */ color: oklch(26.9% 0.096 271.8);

Tailwind

colors: {
  custom: {
    50: '#5d5a85',
    500: '#171f54',
    950: '#000000',
  },
}

SCSS

$custom: #171f54;
$custom-light: #5d5a85;
$custom-dark: #000000;

JSON

{
  "hex": "#171f54",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 84
  },
  "hsl": {
    "h": 232.131,
    "s": 57.009,
    "l": 20.98
  },
  "oklch": {
    "l": 0.26859,
    "c": 0.0962,
    "h": 271.8
  },
  "luminance": 0.01802
}

Semantic roles & 50–950 ramp

primary

#171F54

secondary

#8B813C

accent

#CC48E0

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #171F54

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

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