#170D4A#170D4A

#170D4A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.4% C 0.105 H 281.1°. Best body text is #FFFFFF at 17.61:1 contrast (WCAG AA passes).

Color values

HEX	#170D4A
RGB	rgb(23, 13, 74)
HSL	hsl(250, 70%, 17%)
HSV	hsv(250, 82%, 29%)
CMYK	cmyk(68.9%, 82.4%, 0%, 71%)
CIE-LAB	lab(8.69, 25.17, -35.88)
CIE-LCH	lch(8.69, 43.83, 305.05°)
OKLab	oklab(22.39% 0.0204 -0.1035)
OKLCH	oklch(22.39% 0.106 281.1)
XYZ	xyz(1.7329, 0.9643, 6.5720)
Luminance	0.0096 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D4A #404A0D

analogous

#0D224A #170D4A #360D4A

triadic

#170D4A #4A170D #0D4A17

tetradic

#170D4A #4A0D22 #404A0D #0D4A36

square

#170D4A #4A0D22 #404A0D #0D4A36

split-complementary

#170D4A #4A360D #224A0D

monochromatic

#08051A #08051A #170D4A #27167E #371FB2

Accessibility & contrast

On white

17.61

#170D4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#170D4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D4A

17.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D4A	#FFFFFF	#000000	##FFFFFF
##170D4A	1.00	17.61	1.19	17.61
#FFFFFF	17.61	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001B4C

Deuteranopia (green-blind)

#001749

Tritanopia (blue-blind)

#001E2A

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #170d4a;
/* rgb */ color: rgb(23, 13, 74);
/* oklch */ color: oklch(22.4% 0.105 281.1);

Tailwind

colors: {
  custom: {
    50: '#5c4d7d',
    500: '#170d4a',
    950: '#000000',
  },
}

SCSS

$custom: #170d4a;
$custom-light: #5c4d7d;
$custom-dark: #000000;

JSON

{
  "hex": "#170d4a",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 74
  },
  "hsl": {
    "h": 249.836,
    "s": 70.115,
    "l": 17.059
  },
  "oklch": {
    "l": 0.22391,
    "c": 0.1055,
    "h": 281.1
  },
  "luminance": 0.00964
}

Semantic roles & 50–950 ramp

primary

#170D4A

secondary

#77852E

accent

#ED3BD0

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04010A

muted

#79777C

Preview Lab

Preview with #170D4A

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

Preview Lab → · Contrast checker → · Palette generator →