#170F56#170F56

#170F56 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 24.1% C 0.120 H 277.5°. Best body text is #FFFFFF at 16.95:1 contrast (WCAG AA passes).

Color values

HEX	#170F56
RGB	rgb(23, 15, 86)
HSL	hsl(247, 70%, 20%)
HSV	hsv(247, 83%, 34%)
CMYK	cmyk(73.3%, 82.6%, 0%, 66.3%)
CIE-LAB	lab(10.52, 28.24, -41.12)
CIE-LCH	lch(10.52, 49.88, 304.48°)
OKLab	oklab(24.1% 0.0157 -0.1188)
OKLCH	oklch(24.1% 0.12 277.5)
XYZ	xyz(2.2033, 1.1955, 8.9169)
Luminance	0.0120 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F56 #4E560F

analogous

#0F2A56 #170F56 #3B0F56

triadic

#170F56 #56170F #0F5617

tetradic

#170F56 #560F2A #4E560F #0F563B

square

#170F56 #560F2A #4E560F #0F563B

split-complementary

#170F56 #563B0F #2A560F

monochromatic

#07051A #090622 #170F56 #25188A #3321BE

Accessibility & contrast

On white

16.95

#170F56 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#170F56 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F56

16.95:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F56	#FFFFFF	#000000	##FFFFFF
##170F56	1.00	16.95	1.24	16.95
#FFFFFF	16.95	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.95	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F58

Deuteranopia (green-blind)

#001A55

Tritanopia (blue-blind)

#002432

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #170f56;
/* rgb */ color: rgb(23, 15, 86);
/* oklch */ color: oklch(24.1% 0.120 277.5);

Tailwind

colors: {
  custom: {
    50: '#5f4f87',
    500: '#170f56',
    950: '#000000',
  },
}

SCSS

$custom: #170f56;
$custom-light: #5f4f87;
$custom-dark: #000000;

JSON

{
  "hex": "#170f56",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 86
  },
  "hsl": {
    "h": 246.761,
    "s": 70.297,
    "l": 19.804
  },
  "oklch": {
    "l": 0.24103,
    "c": 0.11984,
    "h": 277.5
  },
  "luminance": 0.01196
}

Semantic roles & 50–950 ramp

primary

#170F56

secondary

#859031

accent

#ED3BD9

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #170F56

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

Preview Lab → · Contrast checker → · Palette generator →