#170D4D#170D4D

#170D4D is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.7% C 0.110 H 280.3°. Best body text is #FFFFFF at 17.48:1 contrast (WCAG AA passes).

Color values

HEX	#170D4D
RGB	rgb(23, 13, 77)
HSL	hsl(249, 71%, 18%)
HSV	hsv(249, 83%, 30%)
CMYK	cmyk(70.1%, 83.1%, 0%, 69.8%)
CIE-LAB	lab(9.04, 26.24, -37.39)
CIE-LCH	lch(9.04, 45.68, 305.06°)
OKLab	oklab(22.74% 0.0195 -0.1079)
OKLCH	oklch(22.74% 0.11 280.3)
XYZ	xyz(1.8364, 1.0057, 7.1171)
Luminance	0.0101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.82

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D4D #434D0D

analogous

#0D234D #170D4D #370D4D

triadic

#170D4D #4D170D #0D4D17

tetradic

#170D4D #4D0D23 #434D0D #0D4D37

square

#170D4D #4D0D23 #434D0D #0D4D37

split-complementary

#170D4D #4D370D #234D0D

monochromatic

#08041A #08041A #170D4D #271681 #361FB6

Accessibility & contrast

On white

17.48

#170D4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#170D4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D4D

17.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D4D	#FFFFFF	#000000	##FFFFFF
##170D4D	1.00	17.48	1.20	17.48
#FFFFFF	17.48	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4F

Deuteranopia (green-blind)

#00174C

Tritanopia (blue-blind)

#001F2C

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #170d4d;
/* rgb */ color: rgb(23, 13, 77);
/* oklch */ color: oklch(22.7% 0.110 280.3);

Tailwind

colors: {
  custom: {
    50: '#5d4d80',
    500: '#170d4d',
    950: '#000000',
  },
}

SCSS

$custom: #170d4d;
$custom-light: #5d4d80;
$custom-dark: #000000;

JSON

{
  "hex": "#170d4d",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 77
  },
  "hsl": {
    "h": 249.375,
    "s": 71.111,
    "l": 17.647
  },
  "oklch": {
    "l": 0.22741,
    "c": 0.10967,
    "h": 280.3
  },
  "luminance": 0.01006
}

Semantic roles & 50–950 ramp

primary

#170D4D

secondary

#7A882E

accent

#EE3AD2

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #170D4D

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

Preview Lab → · Contrast checker → · Palette generator →