#17104A#17104A

#17104A is a very dark, moderate blue. Relative luminance 0.010; OKLCH L 22.9% C 0.102 H 280.1°. Best body text is #FFFFFF at 17.36:1 contrast (WCAG AA passes).

Color values

HEX	#17104A
RGB	rgb(23, 16, 74)
HSL	hsl(247, 64%, 18%)
HSV	hsv(247, 78%, 29%)
CMYK	cmyk(68.9%, 78.4%, 0%, 71%)
CIE-LAB	lab(9.38, 23.25, -34.75)
CIE-LCH	lch(9.38, 41.82, 303.79°)
OKLab	oklab(22.88% 0.0179 -0.1002)
OKLCH	oklch(22.88% 0.102 280.1)
XYZ	xyz(1.7743, 1.0470, 6.5858)
Luminance	0.0105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17104A #434A10

analogous

#10264A #17104A #34104A

triadic

#17104A #4A1710 #104A17

tetradic

#17104A #4A1026 #434A10 #104A34

square

#17104A #4A1026 #434A10 #104A34

split-complementary

#17104A #4A3410 #264A10

monochromatic

#080519 #080519 #17104A #271B7C #3626AF

Accessibility & contrast

On white

17.36

#17104A on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.21

#17104A on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17104A

17.36:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17104A	#FFFFFF	#000000	##FFFFFF
##17104A	1.00	17.36	1.21	17.36
#FFFFFF	17.36	1.00	21.00	1.00
#000000	1.21	21.00	1.00	21.00
##FFFFFF	17.36	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#001C4C

Deuteranopia (green-blind)

#001849

Tritanopia (blue-blind)

#00202B

Achromatopsia (no color)

#1A1A1A

Design tokens & code

CSS

--color: #17104a;
/* rgb */ color: rgb(23, 16, 74);
/* oklch */ color: oklch(22.9% 0.102 280.1);

Tailwind

colors: {
  custom: {
    50: '#5c4f7d',
    500: '#17104a',
    950: '#000000',
  },
}

SCSS

$custom: #17104a;
$custom-light: #5c4f7d;
$custom-dark: #000000;

JSON

{
  "hex": "#17104a",
  "rgb": {
    "r": 23,
    "g": 16,
    "b": 74
  },
  "hsl": {
    "h": 247.241,
    "s": 64.444,
    "l": 17.647
  },
  "oklch": {
    "l": 0.22878,
    "c": 0.10182,
    "h": 280.1
  },
  "luminance": 0.01047
}

Semantic roles & 50–950 ramp

primary

#17104A

secondary

#7A8432

accent

#E740D3

background

#F5F4F7

surface

#E9E7EE

border

#C5C3C9

text

#04020A

muted

#79787C

Preview Lab

Preview with #17104A

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

Preview Lab → · Contrast checker → · Palette generator →