#170D54#170D54

#170D54 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.6% C 0.119 H 278.4°. Best body text is #FFFFFF at 17.18:1 contrast (WCAG AA passes).

Color values

HEX	#170D54
RGB	rgb(23, 13, 84)
HSL	hsl(248, 73%, 19%)
HSV	hsv(248, 85%, 33%)
CMYK	cmyk(72.6%, 84.5%, 0%, 67.1%)
CIE-LAB	lab(9.88, 28.70, -40.83)
CIE-LCH	lch(9.88, 49.91, 305.11°)
OKLab	oklab(23.58% 0.0175 -0.1179)
OKLCH	oklch(23.58% 0.119 278.4)
XYZ	xyz(2.0970, 1.1099, 8.4895)
Luminance	0.0111 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D54 #4A540D

analogous

#0D2754 #170D54 #3B0D54

triadic

#170D54 #54170D #0D5417

tetradic

#170D54 #540D27 #4A540D #0D543B

square

#170D54 #540D27 #4A540D #0D543B

split-complementary

#170D54 #543B0D #27540D

monochromatic

#07041A #08051F #170D54 #261589 #341DBE

Accessibility & contrast

On white

17.18

#170D54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#170D54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D54

17.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D54	#FFFFFF	#000000	##FFFFFF
##170D54	1.00	17.18	1.22	17.18
#FFFFFF	17.18	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E56

Deuteranopia (green-blind)

#001853

Tritanopia (blue-blind)

#002230

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #170d54;
/* rgb */ color: rgb(23, 13, 84);
/* oklch */ color: oklch(23.6% 0.119 278.4);

Tailwind

colors: {
  custom: {
    50: '#5f4d85',
    500: '#170d54',
    950: '#000000',
  },
}

SCSS

$custom: #170d54;
$custom-light: #5f4d85;
$custom-dark: #000000;

JSON

{
  "hex": "#170d54",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 84
  },
  "hsl": {
    "h": 248.451,
    "s": 73.196,
    "l": 19.02
  },
  "oklch": {
    "l": 0.23577,
    "c": 0.11922,
    "h": 278.4
  },
  "luminance": 0.0111
}

Semantic roles & 50–950 ramp

primary

#170D54

secondary

#818F2E

accent

#F038D6

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05010B

muted

#79777C

Preview Lab

Preview with #170D54

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

Preview Lab → · Contrast checker → · Palette generator →