#170F45#170F45

#170F45 is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.2% C 0.096 H 282.0°. Best body text is #FFFFFF at 17.64:1 contrast (WCAG AA passes).

Color values

HEX	#170F45
RGB	rgb(23, 15, 69)
HSL	hsl(249, 64%, 16%)
HSV	hsv(249, 78%, 27%)
CMYK	cmyk(66.7%, 78.3%, 0%, 72.9%)
CIE-LAB	lab(8.60, 22.07, -32.53)
CIE-LCH	lch(8.60, 39.31, 304.15°)
OKLab	oklab(22.16% 0.0199 -0.0937)
OKLCH	oklch(22.16% 0.096 282)
XYZ	xyz(1.5980, 0.9534, 5.7289)
Luminance	0.0095 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F45 #3D450F

analogous

#0F2245 #170F45 #320F45

triadic

#170F45 #45170F #0F4517

tetradic

#170F45 #450F22 #3D450F #0F4532

square

#170F45 #450F22 #3D450F #0F4532

split-complementary

#170F45 #45320F #22450F

monochromatic

#080519 #080519 #170F45 #281A77 #3925AA

Accessibility & contrast

On white

17.64

#170F45 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.19

#170F45 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F45

17.64:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F45	#FFFFFF	#000000	##FFFFFF
##170F45	1.00	17.64	1.19	17.64
#FFFFFF	17.64	1.00	21.00	1.00
#000000	1.19	21.00	1.00	21.00
##FFFFFF	17.64	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001A47

Deuteranopia (green-blind)

#001744

Tritanopia (blue-blind)

#001D28

Achromatopsia (no color)

#191919

Design tokens & code

CSS

--color: #170f45;
/* rgb */ color: rgb(23, 15, 69);
/* oklch */ color: oklch(22.2% 0.096 282.0);

Tailwind

colors: {
  custom: {
    50: '#5b4e79',
    500: '#170f45',
    950: '#000000',
  },
}

SCSS

$custom: #170f45;
$custom-light: #5b4e79;
$custom-dark: #000000;

JSON

{
  "hex": "#170f45",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 69
  },
  "hsl": {
    "h": 248.889,
    "s": 64.286,
    "l": 16.471
  },
  "oklch": {
    "l": 0.22156,
    "c": 0.09581,
    "h": 282
  },
  "luminance": 0.00953
}

Semantic roles & 50–950 ramp

primary

#170F45

secondary

#747F30

accent

#E741CF

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040109

muted

#79777B

Preview Lab

Preview with #170F45

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

Preview Lab → · Contrast checker → · Palette generator →