#170F53#170F53

#170F53 is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.7% C 0.116 H 278.2°. Best body text is #FFFFFF at 17.08:1 contrast (WCAG AA passes).

Color values

HEX	#170F53
RGB	rgb(23, 15, 83)
HSL	hsl(247, 69%, 19%)
HSV	hsv(247, 82%, 33%)
CMYK	cmyk(72.3%, 81.9%, 0%, 67.5%)
CIE-LAB	lab(10.17, 27.17, -39.66)
CIE-LCH	lch(10.17, 48.07, 304.41°)
OKLab	oklab(23.75% 0.0165 -0.1145)
OKLCH	oklch(23.75% 0.116 278.2)
XYZ	xyz(2.0850, 1.1482, 8.2937)
Luminance	0.0115 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F53 #4B530F

analogous

#0F2953 #170F53 #390F53

triadic

#170F53 #53170F #0F5317

tetradic

#170F53 #530F29 #4B530F #0F5339

square

#170F53 #530F29 #4B530F #0F5339

split-complementary

#170F53 #53390F #29530F

monochromatic

#07051A #09061F #170F53 #251887 #3422BB

Accessibility & contrast

On white

17.08

#170F53 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.23

#170F53 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F53

17.08:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F53	#FFFFFF	#000000	##FFFFFF
##170F53	1.00	17.08	1.23	17.08
#FFFFFF	17.08	1.00	21.00	1.00
#000000	1.23	21.00	1.00	21.00
##FFFFFF	17.08	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001E55

Deuteranopia (green-blind)

#001952

Tritanopia (blue-blind)

#002330

Achromatopsia (no color)

#1C1C1C

Design tokens & code

CSS

--color: #170f53;
/* rgb */ color: rgb(23, 15, 83);
/* oklch */ color: oklch(23.7% 0.116 278.2);

Tailwind

colors: {
  custom: {
    50: '#5e4f84',
    500: '#170f53',
    950: '#000000',
  },
}

SCSS

$custom: #170f53;
$custom-light: #5e4f84;
$custom-dark: #000000;

JSON

{
  "hex": "#170f53",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 83
  },
  "hsl": {
    "h": 247.059,
    "s": 69.388,
    "l": 19.216
  },
  "oklch": {
    "l": 0.23747,
    "c": 0.11573,
    "h": 278.2
  },
  "luminance": 0.01148
}

Semantic roles & 50–950 ramp

primary

#170F53

secondary

#828D31

accent

#EC3CD7

background

#F5F4F8

surface

#EAE7EF

border

#C6C3CA

text

#05020B

muted

#79787C

Preview Lab

Preview with #170F53

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

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