#17104D#17104D

#17104D is a very dark, moderate blue. Relative luminance 0.011; OKLCH L 23.2% C 0.106 H 279.3°. Best body text is #FFFFFF at 17.24:1 contrast (WCAG AA passes).

Color values

HEX	#17104D
RGB	rgb(23, 16, 77)
HSL	hsl(247, 66%, 18%)
HSV	hsv(247, 79%, 30%)
CMYK	cmyk(70.1%, 79.2%, 0%, 69.8%)
CIE-LAB	lab(9.71, 24.36, -36.29)
CIE-LCH	lch(9.71, 43.71, 303.87°)
OKLab	oklab(23.21% 0.0172 -0.1047)
OKLCH	oklch(23.21% 0.106 279.3)
XYZ	xyz(1.8778, 1.0884, 7.1309)
Luminance	0.0109 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17104D #464D10

analogous

#10274D #17104D #35104D

triadic

#17104D #4D1710 #104D17

tetradic

#17104D #4D1027 #464D10 #104D35

square

#17104D #4D1027 #464D10 #104D35

split-complementary

#17104D #4D3510 #274D10

monochromatic

#080519 #08051A #17104D #261B80 #3525B2

Accessibility & contrast

On white

17.24

#17104D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.22

#17104D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17104D

17.24:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17104D	#FFFFFF	#000000	##FFFFFF
##17104D	1.00	17.24	1.22	17.24
#FFFFFF	17.24	1.00	21.00	1.00
#000000	1.22	21.00	1.00	21.00
##FFFFFF	17.24	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001D4F

Deuteranopia (green-blind)

#00184C

Tritanopia (blue-blind)

#00212D

Achromatopsia (no color)

#1B1B1B

Design tokens & code

CSS

--color: #17104d;
/* rgb */ color: rgb(23, 16, 77);
/* oklch */ color: oklch(23.2% 0.106 279.3);

Tailwind

colors: {
  custom: {
    50: '#5d4f80',
    500: '#17104d',
    950: '#000000',
  },
}

SCSS

$custom: #17104d;
$custom-light: #5d4f80;
$custom-dark: #000000;

JSON

{
  "hex": "#17104d",
  "rgb": {
    "r": 23,
    "g": 16,
    "b": 77
  },
  "hsl": {
    "h": 246.885,
    "s": 65.591,
    "l": 18.235
  },
  "oklch": {
    "l": 0.23214,
    "c": 0.10614,
    "h": 279.3
  },
  "luminance": 0.01089
}

Semantic roles & 50–950 ramp

primary

#17104D

secondary

#7D8732

accent

#E93FD5

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#05020A

muted

#79787C

Preview Lab

Preview with #17104D

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

Preview Lab → · Contrast checker → · Palette generator →