#170D5E#170D5E

#170D5E is a very dark, vivid blue. Relative luminance 0.013; OKLCH L 24.8% C 0.132 H 276.2°. Best body text is #FFFFFF at 16.73:1 contrast (WCAG AA passes).

Color values

HEX	#170D5E
RGB	rgb(23, 13, 94)
HSL	hsl(247, 76%, 21%)
HSV	hsv(247, 86%, 37%)
CMYK	cmyk(75.5%, 86.2%, 0%, 63.1%)
CIE-LAB	lab(11.12, 32.14, -45.54)
CIE-LCH	lch(11.12, 55.74, 305.21°)
OKLab	oklab(24.81% 0.0144 -0.1316)
OKLCH	oklch(24.81% 0.132 276.2)
XYZ	xyz(2.5170, 1.2779, 10.7015)
Luminance	0.0128 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D5E #545E0D

analogous

#0D2B5E #170D5E #3F0D5E

triadic

#170D5E #5E170D #0D5E17

tetradic

#170D5E #5E0D2B #545E0D #0D5E3F

square

#170D5E #5E0D2B #545E0D #0D5E3F

split-complementary

#170D5E #5E3F0D #2B5E0D

monochromatic

#07041B #0A0628 #170D5E #241494 #311CCA

Accessibility & contrast

On white

16.73

#170D5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.26

#170D5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D5E

16.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D5E	#FFFFFF	#000000	##FFFFFF
##170D5E	1.00	16.73	1.26	16.73
#FFFFFF	16.73	1.00	21.00	1.00
#000000	1.26	21.00	1.00	21.00
##FFFFFF	16.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002160

Deuteranopia (green-blind)

#001A5D

Tritanopia (blue-blind)

#002636

Achromatopsia (no color)

#1E1E1E

Design tokens & code

CSS

--color: #170d5e;
/* rgb */ color: rgb(23, 13, 94);
/* oklch */ color: oklch(24.8% 0.132 276.2);

Tailwind

colors: {
  custom: {
    50: '#614e8d',
    500: '#170d5e',
    950: '#000000',
  },
}

SCSS

$custom: #170d5e;
$custom-light: #614e8d;
$custom-dark: #000000;

JSON

{
  "hex": "#170d5e",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 94
  },
  "hsl": {
    "h": 247.407,
    "s": 75.701,
    "l": 20.98
  },
  "oklch": {
    "l": 0.24809,
    "c": 0.13241,
    "h": 276.2
  },
  "luminance": 0.01278
}

Semantic roles & 50–950 ramp

primary

#170D5E

secondary

#8B982F

accent

#F236DB

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #170D5E

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

Preview Lab → · Contrast checker → · Palette generator →