#171A3D#171A3D

#171A3D is a very dark, moderate blue. Relative luminance 0.013; OKLCH L 23.7% C 0.066 H 276.4°. Best body text is #FFFFFF at 16.78:1 contrast (WCAG AA passes).

Color values

HEX	#171A3D
RGB	rgb(23, 26, 61)
HSL	hsl(235, 45%, 16%)
HSV	hsv(235, 62%, 24%)
CMYK	cmyk(62.3%, 57.4%, 0%, 76.1%)
CIE-LAB	lab(10.98, 10.92, -23.01)
CIE-LCH	lch(10.98, 25.47, 295.38°)
OKLab	oklab(23.68% 0.0074 -0.0657)
OKLCH	oklch(23.68% 0.066 276.4)
XYZ	xyz(1.5648, 1.2578, 4.5743)
Luminance	0.0126 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A3D #3D3A17

analogous

#172D3D #171A3D #27173D

triadic

#171A3D #3D171A #1A3D17

tetradic

#171A3D #3D172D #3D3A17 #173D27

square

#171A3D #3D172D #3D3A17 #173D27

split-complementary

#171A3D #3D2717 #2D3D17

monochromatic

#080916 #080916 #171A3D #282D69 #394096

Accessibility & contrast

On white

16.78

#171A3D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.25

#171A3D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A3D

16.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A3D	#FFFFFF	#000000	##FFFFFF
##171A3D	1.00	16.78	1.25	16.78
#FFFFFF	16.78	1.00	21.00	1.00
#000000	1.25	21.00	1.00	21.00
##FFFFFF	16.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#091F3E

Deuteranopia (green-blind)

#051C3C

Tritanopia (blue-blind)

#052228

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #171a3d;
/* rgb */ color: rgb(23, 26, 61);
/* oklch */ color: oklch(23.7% 0.066 276.4);

Tailwind

colors: {
  custom: {
    50: '#585673',
    500: '#171a3d',
    950: '#000000',
  },
}

SCSS

$custom: #171a3d;
$custom-light: #585673;
$custom-dark: #000000;

JSON

{
  "hex": "#171a3d",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 61
  },
  "hsl": {
    "h": 235.263,
    "s": 45.238,
    "l": 16.471
  },
  "oklch": {
    "l": 0.23679,
    "c": 0.0661,
    "h": 276.4
  },
  "luminance": 0.01258
}

Semantic roles & 50–950 ramp

primary

#171A3D

secondary

#746F3C

accent

#CB53D5

background

#F5F5F7

surface

#E9E9ED

border

#C5C5C8

text

#030308

muted

#78787B

Preview Lab

Preview with #171A3D

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

Preview Lab → · Contrast checker → · Palette generator →