#170F41#170F41

#170F41 is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.7% C 0.090 H 283.3°. Best body text is #FFFFFF at 17.78:1 contrast (WCAG AA passes).

Color values

HEX	#170F41
RGB	rgb(23, 15, 65)
HSL	hsl(250, 63%, 16%)
HSV	hsv(250, 77%, 25%)
CMYK	cmyk(64.6%, 76.9%, 0%, 74.5%)
CIE-LAB	lab(8.18, 20.59, -30.39)
CIE-LCH	lch(8.18, 36.71, 304.11°)
OKLab	oklab(21.73% 0.0206 -0.0875)
OKLCH	oklch(21.73% 0.09 283.3)
XYZ	xyz(1.4780, 0.9054, 5.0969)
Luminance	0.0091 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Navy Blue (survey)

#001146

ΔE00 4.05

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#170F41 #39410F

analogous

#0F2041 #170F41 #300F41

triadic

#170F41 #41170F #0F4117

tetradic

#170F41 #410F20 #39410F #0F4130

square

#170F41 #410F20 #39410F #0F4130

split-complementary

#170F41 #41300F #20410F

monochromatic

#090619 #090619 #170F41 #291A73 #3A26A4

Accessibility & contrast

On white

17.78

#170F41 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#170F41 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #170F41

17.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##170F41	#FFFFFF	#000000	##FFFFFF
##170F41	1.00	17.78	1.18	17.78
#FFFFFF	17.78	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001943

Deuteranopia (green-blind)

#001640

Tritanopia (blue-blind)

#031C26

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #170f41;
/* rgb */ color: rgb(23, 15, 65);
/* oklch */ color: oklch(21.7% 0.090 283.3);

Tailwind

colors: {
  custom: {
    50: '#5a4e76',
    500: '#170f41',
    950: '#000000',
  },
}

SCSS

$custom: #170f41;
$custom-light: #5a4e76;
$custom-dark: #000000;

JSON

{
  "hex": "#170f41",
  "rgb": {
    "r": 23,
    "g": 15,
    "b": 65
  },
  "hsl": {
    "h": 249.6,
    "s": 62.5,
    "l": 15.686
  },
  "oklch": {
    "l": 0.21726,
    "c": 0.08986,
    "h": 283.3
  },
  "luminance": 0.00905
}

Semantic roles & 50–950 ramp

primary

#170F41

secondary

#6F7B30

accent

#E642CB

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040108

muted

#79777B

Preview Lab

Preview with #170F41

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

Preview Lab → · Contrast checker → · Palette generator →