#170D5A#170D5A

#170D5A is a very dark, vivid blue. Relative luminance 0.012; OKLCH L 24.3% C 0.127 H 277.1°. Best body text is #FFFFFF at 16.91:1 contrast (WCAG AA passes).

Color values

HEX	#170D5A
RGB	rgb(23, 13, 90)
HSL	hsl(248, 75%, 20%)
HSV	hsv(248, 86%, 35%)
CMYK	cmyk(74.4%, 85.6%, 0%, 64.7%)
CIE-LAB	lab(10.62, 30.77, -43.68)
CIE-LCH	lch(10.62, 53.43, 305.17°)
OKLab	oklab(24.31% 0.0156 -0.1262)
OKLCH	oklch(24.31% 0.127 277.1)
XYZ	xyz(2.3421, 1.2080, 9.7806)
Luminance	0.0121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170D5A #505A0D

analogous

#0D2A5A #170D5A #3D0D5A

triadic

#170D5A #5A170D #0D5A17

tetradic

#170D5A #5A0D2A #505A0D #0D5A3D

square

#170D5A #5A0D2A #505A0D #0D5A3D

split-complementary

#170D5A #5A3D0D #2A5A0D

monochromatic

#07041B #090525 #170D5A #25158F #321CC5

Accessibility & contrast

On white

16.91

#170D5A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.24

#170D5A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170D5A

16.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170D5A	#FFFFFF	#000000	##FFFFFF
##170D5A	1.00	16.91	1.24	16.91
#FFFFFF	16.91	1.00	21.00	1.00
#000000	1.24	21.00	1.00	21.00
##FFFFFF	16.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00205C

Deuteranopia (green-blind)

#001959

Tritanopia (blue-blind)

#002534

Achromatopsia (no color)

#1D1D1D

Design tokens & code

CSS

--color: #170d5a;
/* rgb */ color: rgb(23, 13, 90);
/* oklch */ color: oklch(24.3% 0.127 277.1);

Tailwind

colors: {
  custom: {
    50: '#604e8a',
    500: '#170d5a',
    950: '#000000',
  },
}

SCSS

$custom: #170d5a;
$custom-light: #604e8a;
$custom-dark: #000000;

JSON

{
  "hex": "#170d5a",
  "rgb": {
    "r": 23,
    "g": 13,
    "b": 90
  },
  "hsl": {
    "h": 247.792,
    "s": 74.757,
    "l": 20.196
  },
  "oklch": {
    "l": 0.24311,
    "c": 0.12719,
    "h": 277.1
  },
  "luminance": 0.01208
}

Semantic roles & 50–950 ramp

primary

#170D5A

secondary

#87942E

accent

#F136D9

background

#F6F4F8

surface

#EBE7F0

border

#C6C3CB

text

#06020C

muted

#7A787D

Preview Lab

Preview with #170D5A

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

Preview Lab → · Contrast checker → · Palette generator →