#170F4C#170F4C

#170F4C is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.9% C 0.106 H 279.9°. Best body text is #FFFFFF at 17.37:1 contrast (WCAG AA passes).

Color values

HEX	#170F4C
RGB	rgb(23, 15, 76)
HSL	hsl(248, 67%, 18%)
HSV	hsv(248, 80%, 30%)
CMYK	cmyk(69.7%, 80.3%, 0%, 70.2%)
CIE-LAB	lab(9.36, 24.64, -36.16)
CIE-LCH	lch(9.36, 43.76, 304.27°)
OKLab	oklab(22.94% 0.0183 -0.1043)
OKLCH	oklch(22.94% 0.106 279.9)
XYZ	xyz(1.8283, 1.0455, 6.9415)
Luminance	0.0105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F4C #444C0F

analogous

#0F254C #170F4C #350F4C

triadic

#170F4C #4C170F #0F4C17

tetradic

#170F4C #4C0F25 #444C0F #0F4C35

square

#170F4C #4C0F25 #444C0F #0F4C35

split-complementary

#170F4C #4C350F #254C0F

monochromatic

#08051A #08051A #170F4C #26197F #3623B2

Accessibility & contrast

On white

17.37

#170F4C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#170F4C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F4C

17.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F4C	#FFFFFF	#000000	##FFFFFF
##170F4C	1.00	17.37	1.21	17.37
#FFFFFF	17.37	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4E

Deuteranopia (green-blind)

#00184B

Tritanopia (blue-blind)

#00202C

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #170f4c;
/* rgb */ color: rgb(23, 15, 76);
/* oklch */ color: oklch(22.9% 0.106 279.9);

Tailwind

colors: {
  custom: {
    50: '#5d4e7f',
    500: '#170f4c',
    950: '#000000',
  },
}

SCSS

$custom: #170f4c;
$custom-light: #5d4e7f;
$custom-dark: #000000;

JSON

{
  "hex": "#170f4c",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 76
  },
  "hsl": {
    "h": 247.869,
    "s": 67.033,
    "l": 17.843
  },
  "oklch": {
    "l": 0.22936,
    "c": 0.10594,
    "h": 279.9
  },
  "luminance": 0.01046
}

Semantic roles & 50–950 ramp

primary

#170F4C

secondary

#7B8631

accent

#EA3ED3

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05010A

muted

#79777C

Preview Lab

Preview with #170F4C

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

Preview Lab → · Contrast checker → · Palette generator →