#170D4C#170D4C

#170D4C is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.6% C 0.108 H 280.5°. Best body text is #FFFFFF at 17.52:1 contrast (WCAG AA passes).

Color values

HEX	#170D4C
RGB	rgb(23, 13, 76)
HSL	hsl(250, 71%, 17%)
HSV	hsv(250, 83%, 30%)
CMYK	cmyk(69.7%, 82.9%, 0%, 70.2%)
CIE-LAB	lab(8.92, 25.89, -36.89)
CIE-LCH	lch(8.92, 45.07, 305.06°)
OKLab	oklab(22.62% 0.0198 -0.1065)
OKLCH	oklch(22.62% 0.108 280.5)
XYZ	xyz(1.8014, 0.9917, 6.9326)
Luminance	0.0099 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

#020035

ΔE00 5.68

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D4C #424C0D

analogous

#0D224C #170D4C #370D4C

triadic

#170D4C #4C170D #0D4C17

tetradic

#170D4C #4C0D22 #424C0D #0D4C37

square

#170D4C #4C0D22 #424C0D #0D4C37

split-complementary

#170D4C #4C370D #224C0D

monochromatic

#08041A #08041A #170D4C #271680 #371FB5

Accessibility & contrast

On white

17.52

#170D4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#170D4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D4C

17.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D4C	#FFFFFF	#000000	##FFFFFF
##170D4C	1.00	17.52	1.20	17.52
#FFFFFF	17.52	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4E

Deuteranopia (green-blind)

#00174B

Tritanopia (blue-blind)

#001F2C

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #170d4c;
/* rgb */ color: rgb(23, 13, 76);
/* oklch */ color: oklch(22.6% 0.108 280.5);

Tailwind

colors: {
  custom: {
    50: '#5d4d7f',
    500: '#170d4c',
    950: '#000000',
  },
}

SCSS

$custom: #170d4c;
$custom-light: #5d4d7f;
$custom-dark: #000000;

JSON

{
  "hex": "#170d4c",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 76
  },
  "hsl": {
    "h": 249.524,
    "s": 70.787,
    "l": 17.451
  },
  "oklch": {
    "l": 0.22623,
    "c": 0.10829,
    "h": 280.5
  },
  "luminance": 0.00992
}

Semantic roles & 50–950 ramp

primary

#170D4C

secondary

#79872E

accent

#EE3AD1

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #170D4C

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

Preview Lab → · Contrast checker → · Palette generator →