#170D4F#170D4F

#170D4F is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 23.0% C 0.112 H 279.7°. Best body text is #FFFFFF at 17.40:1 contrast (WCAG AA passes).

Color values

HEX	#170D4F
RGB	rgb(23, 13, 79)
HSL	hsl(249, 72%, 18%)
HSV	hsv(249, 84%, 31%)
CMYK	cmyk(70.9%, 83.5%, 0%, 69%)
CIE-LAB	lab(9.27, 26.95, -38.39)
CIE-LCH	lch(9.27, 46.90, 305.07°)
OKLab	oklab(22.98% 0.019 -0.1108)
OKLCH	oklch(22.98% 0.112 279.7)
XYZ	xyz(1.9081, 1.0344, 7.4947)
Luminance	0.0103 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D4F #454F0D

analogous

#0D244F #170D4F #380D4F

triadic

#170D4F #4F170D #0D4F17

tetradic

#170D4F #4F0D24 #454F0D #0D4F38

square

#170D4F #4F0D24 #454F0D #0D4F38

split-complementary

#170D4F #4F380D #244F0D

monochromatic

#08041A #08041A #170D4F #261684 #361EB8

Accessibility & contrast

On white

17.40

#170D4F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#170D4F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D4F

17.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D4F	#FFFFFF	#000000	##FFFFFF
##170D4F	1.00	17.40	1.21	17.40
#FFFFFF	17.40	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C51

Deuteranopia (green-blind)

#00174E

Tritanopia (blue-blind)

#00202D

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #170d4f;
/* rgb */ color: rgb(23, 13, 79);
/* oklch */ color: oklch(23.0% 0.112 279.7);

Tailwind

colors: {
  custom: {
    50: '#5e4d81',
    500: '#170d4f',
    950: '#000000',
  },
}

SCSS

$custom: #170d4f;
$custom-light: #5e4d81;
$custom-dark: #000000;

JSON

{
  "hex": "#170d4f",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 79
  },
  "hsl": {
    "h": 249.091,
    "s": 71.739,
    "l": 18.039
  },
  "oklch": {
    "l": 0.22977,
    "c": 0.11243,
    "h": 279.7
  },
  "luminance": 0.01035
}

Semantic roles & 50–950 ramp

primary

#170D4F

secondary

#7C8A2E

accent

#EE39D3

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05010A

muted

#79777C

Preview Lab

Preview with #170D4F

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

Preview Lab → · Contrast checker → · Palette generator →