#171B44#171B44

#171B44 is a very dark, moderate blue. Relative luminance 0.014; OKLCH L 24.5% C 0.076 H 275.1°. Best body text is #FFFFFF at 16.45:1 contrast (WCAG AA passes).

Color values

HEX	#171B44
RGB	rgb(23, 27, 68)
HSL	hsl(235, 49%, 18%)
HSV	hsv(235, 66%, 27%)
CMYK	cmyk(66.2%, 60.3%, 0%, 73.3%)
CIE-LAB	lab(11.85, 12.96, -26.55)
CIE-LCH	lch(11.85, 29.54, 296.03°)
OKLab	oklab(24.51% 0.0067 -0.0761)
OKLCH	oklch(24.51% 0.076 275.1)
XYZ	xyz(1.7883, 1.3832, 5.6405)
Luminance	0.0138 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B44 #444017

analogous

#173144 #171B44 #291744

triadic

#171B44 #44171B #1B4417

tetradic

#171B44 #441731 #444017 #174429

square

#171B44 #441731 #444017 #174429

split-complementary

#171B44 #442917 #314417

monochromatic

#080917 #080917 #171B44 #262D72 #363F9F

Accessibility & contrast

On white

16.45

#171B44 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.28

#171B44 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B44

16.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B44	#FFFFFF	#000000	##FFFFFF
##171B44	1.00	16.45	1.28	16.45
#FFFFFF	16.45	1.00	21.00	1.00
#000000	1.28	21.00	1.00	21.00
##FFFFFF	16.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#032145

Deuteranopia (green-blind)

#001D43

Tritanopia (blue-blind)

#00242C

Achromatopsia (no color)

#1F1F1F

Design tokens & code

CSS

--color: #171b44;
/* rgb */ color: rgb(23, 27, 68);
/* oklch */ color: oklch(24.5% 0.076 275.1);

Tailwind

colors: {
  custom: {
    50: '#595778',
    500: '#171b44',
    950: '#000000',
  },
}

SCSS

$custom: #171b44;
$custom-light: #595778;
$custom-dark: #000000;

JSON

{
  "hex": "#171b44",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 68
  },
  "hsl": {
    "h": 234.667,
    "s": 49.451,
    "l": 17.843
  },
  "oklch": {
    "l": 0.2451,
    "c": 0.07637,
    "h": 275.1
  },
  "luminance": 0.01383
}

Semantic roles & 50–950 ramp

primary

#171B44

secondary

#7B753C

accent

#CD4FD9

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#040309

muted

#79787B

Preview Lab

Preview with #171B44

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

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