#170F4A#170F4A

#170F4A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.7% C 0.103 H 280.5°. Best body text is #FFFFFF at 17.45:1 contrast (WCAG AA passes).

Color values

HEX	#170F4A
RGB	rgb(23, 15, 74)
HSL	hsl(248, 66%, 17%)
HSV	hsv(248, 80%, 29%)
CMYK	cmyk(68.9%, 79.7%, 0%, 71%)
CIE-LAB	lab(9.14, 23.91, -35.14)
CIE-LCH	lch(9.14, 42.50, 304.23°)
OKLab	oklab(22.71% 0.0188 -0.1014)
OKLCH	oklch(22.71% 0.103 280.5)
XYZ	xyz(1.7598, 1.0181, 6.5810)
Luminance	0.0102 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F4A #424A0F

analogous

#0F244A #170F4A #350F4A

triadic

#170F4A #4A170F #0F4A17

tetradic

#170F4A #4A0F24 #424A0F #0F4A35

square

#170F4A #4A0F24 #424A0F #0F4A35

split-complementary

#170F4A #4A350F #244A0F

monochromatic

#080519 #080519 #170F4A #27197D #3724B0

Accessibility & contrast

On white

17.45

#170F4A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#170F4A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F4A

17.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F4A	#FFFFFF	#000000	##FFFFFF
##170F4A	1.00	17.45	1.20	17.45
#FFFFFF	17.45	1.00	21.00	1.00
#000000	1.20	21.00	1.00	21.00
##FFFFFF	17.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4C

Deuteranopia (green-blind)

#001849

Tritanopia (blue-blind)

#001F2B

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #170f4a;
/* rgb */ color: rgb(23, 15, 74);
/* oklch */ color: oklch(22.7% 0.103 280.5);

Tailwind

colors: {
  custom: {
    50: '#5c4e7d',
    500: '#170f4a',
    950: '#000000',
  },
}

SCSS

$custom: #170f4a;
$custom-light: #5c4e7d;
$custom-dark: #000000;

JSON

{
  "hex": "#170f4a",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 74
  },
  "hsl": {
    "h": 248.136,
    "s": 66.292,
    "l": 17.451
  },
  "oklch": {
    "l": 0.2271,
    "c": 0.10308,
    "h": 280.5
  },
  "luminance": 0.01018
}

Semantic roles & 50–950 ramp

primary

#170F4A

secondary

#798430

accent

#E93FD2

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04010A

muted

#79777C

Preview Lab

Preview with #170F4A

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

Preview Lab → · Contrast checker → · Palette generator →