#170F50#170F50

#170F50 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.4% C 0.112 H 278.9°. Best body text is #FFFFFF at 17.20:1 contrast (WCAG AA passes).

Color values

HEX	#170F50
RGB	rgb(23, 15, 80)
HSL	hsl(247, 68%, 19%)
HSV	hsv(247, 81%, 31%)
CMYK	cmyk(71.2%, 81.3%, 0%, 68.6%)
CIE-LAB	lab(9.82, 26.09, -38.18)
CIE-LCH	lch(9.82, 46.24, 304.35°)
OKLab	oklab(23.4% 0.0173 -0.1102)
OKLCH	oklch(23.4% 0.112 278.9)
XYZ	xyz(1.9717, 1.1028, 7.6968)
Luminance	0.0110 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F50 #48500F

analogous

#0F2750 #170F50 #370F50

triadic

#170F50 #50170F #0F5017

tetradic

#170F50 #500F27 #48500F #0F5037

square

#170F50 #500F27 #48500F #0F5037

split-complementary

#170F50 #50370F #27500F

monochromatic

#07051A #08051C #170F50 #261984 #3522B7

Accessibility & contrast

On white

17.20

#170F50 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#170F50 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F50

17.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F50	#FFFFFF	#000000	##FFFFFF
##170F50	1.00	17.20	1.22	17.20
#FFFFFF	17.20	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E52

Deuteranopia (green-blind)

#00184F

Tritanopia (blue-blind)

#00222E

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #170f50;
/* rgb */ color: rgb(23, 15, 80);
/* oklch */ color: oklch(23.4% 0.112 278.9);

Tailwind

colors: {
  custom: {
    50: '#5e4e82',
    500: '#170f50',
    950: '#000000',
  },
}

SCSS

$custom: #170f50;
$custom-light: #5e4e82;
$custom-dark: #000000;

JSON

{
  "hex": "#170f50",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 80
  },
  "hsl": {
    "h": 247.385,
    "s": 68.421,
    "l": 18.627
  },
  "oklch": {
    "l": 0.23396,
    "c": 0.11157,
    "h": 278.9
  },
  "luminance": 0.01103
}

Semantic roles & 50–950 ramp

primary

#170F50

secondary

#7F8A31

accent

#EB3DD6

background

#F5F4F8

surface

#E9E7EF

border

#C5C3CA

text

#05020A

muted

#79787C

Preview Lab

Preview with #170F50

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

Preview Lab → · Contrast checker → · Palette generator →