#170F54#170F54

#170F54 is a very dark, moderate blue. Relative luminance 0.012; OKLCH L 23.9% C 0.117 H 278.0°. Best body text is #FFFFFF at 17.03:1 contrast (WCAG AA passes).

Color values

HEX	#170F54
RGB	rgb(23, 15, 84)
HSL	hsl(247, 70%, 19%)
HSV	hsv(247, 82%, 33%)
CMYK	cmyk(72.6%, 82.1%, 0%, 67.1%)
CIE-LAB	lab(10.29, 27.53, -40.15)
CIE-LCH	lch(10.29, 48.68, 304.43°)
OKLab	oklab(23.87% 0.0162 -0.116)
OKLCH	oklch(23.87% 0.117 278)
XYZ	xyz(2.1239, 1.1637, 8.4985)
Luminance	0.0116 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F54 #4C540F

analogous

#0F2954 #170F54 #3A0F54

triadic

#170F54 #54170F #0F5417

tetradic

#170F54 #540F29 #4C540F #0F543A

square

#170F54 #540F29 #4C540F #0F543A

split-complementary

#170F54 #543A0F #29540F

monochromatic

#07051A #090620 #170F54 #251888 #3322BC

Accessibility & contrast

On white

17.03

#170F54 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#170F54 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F54

17.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F54	#FFFFFF	#000000	##FFFFFF
##170F54	1.00	17.03	1.23	17.03
#FFFFFF	17.03	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001F56

Deuteranopia (green-blind)

#001953

Tritanopia (blue-blind)

#002331

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #170f54;
/* rgb */ color: rgb(23, 15, 84);
/* oklch */ color: oklch(23.9% 0.117 278.0);

Tailwind

colors: {
  custom: {
    50: '#5f4f85',
    500: '#170f54',
    950: '#000000',
  },
}

SCSS

$custom: #170f54;
$custom-light: #5f4f85;
$custom-dark: #000000;

JSON

{
  "hex": "#170f54",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 84
  },
  "hsl": {
    "h": 246.957,
    "s": 69.697,
    "l": 19.412
  },
  "oklch": {
    "l": 0.23865,
    "c": 0.11711,
    "h": 278
  },
  "luminance": 0.01164
}

Semantic roles & 50–950 ramp

primary

#170F54

secondary

#838E31

accent

#ED3BD8

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #170F54

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

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