#170F48#170F48

#170F48 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.5% C 0.100 H 281.1°. Best body text is #FFFFFF at 17.52:1 contrast (WCAG AA passes).

Color values

HEX	#170F48
RGB	rgb(23, 15, 72)
HSL	hsl(248, 66%, 17%)
HSV	hsv(248, 79%, 28%)
CMYK	cmyk(68.1%, 79.2%, 0%, 71.8%)
CIE-LAB	lab(8.92, 23.17, -34.11)
CIE-LCH	lch(8.92, 41.23, 304.19°)
OKLab	oklab(22.49% 0.0192 -0.0983)
OKLCH	oklch(22.49% 0.1 281.1)
XYZ	xyz(1.6935, 0.9916, 6.2318)
Luminance	0.0099 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F48 #40480F

analogous

#0F2448 #170F48 #340F48

triadic

#170F48 #48170F #0F4817

tetradic

#170F48 #480F24 #40480F #0F4834

square

#170F48 #480F24 #40480F #0F4834

split-complementary

#170F48 #48340F #24480F

monochromatic

#080519 #080519 #170F48 #271A7B #3724AD

Accessibility & contrast

On white

17.52

#170F48 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.20

#170F48 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F48

17.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F48	#FFFFFF	#000000	##FFFFFF
##170F48	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)

#001B4A

Deuteranopia (green-blind)

#001747

Tritanopia (blue-blind)

#001E2A

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #170f48;
/* rgb */ color: rgb(23, 15, 72);
/* oklch */ color: oklch(22.5% 0.100 281.1);

Tailwind

colors: {
  custom: {
    50: '#5c4e7c',
    500: '#170f48',
    950: '#000000',
  },
}

SCSS

$custom: #170f48;
$custom-light: #5c4e7c;
$custom-dark: #000000;

JSON

{
  "hex": "#170f48",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 72
  },
  "hsl": {
    "h": 248.421,
    "s": 65.517,
    "l": 17.059
  },
  "oklch": {
    "l": 0.22486,
    "c": 0.10019,
    "h": 281.1
  },
  "luminance": 0.00992
}

Semantic roles & 50–950 ramp

primary

#170F48

secondary

#778230

accent

#E83FD1

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#040109

muted

#79777B

Preview Lab

Preview with #170F48

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

Preview Lab → · Contrast checker → · Palette generator →