#171F56#171F56

#171F56 is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.0% C 0.099 H 271.7°. Best body text is #FFFFFF at 15.36:1 contrast (WCAG AA passes).

Color values

HEX	#171F56
RGB	rgb(23, 31, 86)
HSL	hsl(232, 58%, 21%)
HSV	hsv(232, 73%, 34%)
CMYK	cmyk(73.3%, 64%, 0%, 66.3%)
CIE-LAB	lab(14.59, 17.29, -34.46)
CIE-LCH	lch(14.59, 38.55, 296.65°)
OKLab	oklab(27.05% 0.003 -0.0993)
OKLCH	oklch(27.05% 0.099 271.7)
XYZ	xyz(2.5225, 1.8338, 9.0233)
Luminance	0.0183 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171F56 #564E17

analogous

#173F56 #171F56 #2F1756

triadic

#171F56 #56171F #1F5617

tetradic

#171F56 #56173F #564E17 #17562F

square

#171F56 #56173F #564E17 #17562F

split-complementary

#171F56 #562F17 #3F5617

monochromatic

#060918 #0A0E26 #171F56 #243086 #3142B7

Accessibility & contrast

On white

15.36

#171F56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#171F56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171F56

15.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171F56	#FFFFFF	#000000	##FFFFFF
##171F56	1.00	15.36	1.37	15.36
#FFFFFF	15.36	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002858

Deuteranopia (green-blind)

#002255

Tritanopia (blue-blind)

#002D37

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171f56;
/* rgb */ color: rgb(23, 31, 86);
/* oklch */ color: oklch(27.0% 0.099 271.7);

Tailwind

colors: {
  custom: {
    50: '#5d5a86',
    500: '#171f56',
    950: '#000000',
  },
}

SCSS

$custom: #171f56;
$custom-light: #5d5a86;
$custom-dark: #000000;

JSON

{
  "hex": "#171f56",
  "rgb": {
    "r": 23,
    "g": 31,
    "b": 86
  },
  "hsl": {
    "h": 232.381,
    "s": 57.798,
    "l": 21.373
  },
  "oklch": {
    "l": 0.27047,
    "c": 0.09933,
    "h": 271.7
  },
  "luminance": 0.01834
}

Semantic roles & 50–950 ramp

primary

#171F56

secondary

#8D833C

accent

#CD47E1

background

#F5F5F8

surface

#E9E9EF

border

#C5C5CA

text

#05030B

muted

#79787C

Preview Lab

Preview with #171F56

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

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