#17103D#17103D

#17103D is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.5% C 0.082 H 284.2°. Best body text is #FFFFFF at 17.83:1 contrast (WCAG AA passes).

Color values

HEX	#17103D
RGB	rgb(23, 16, 61)
HSL	hsl(249, 58%, 15%)
HSV	hsv(249, 74%, 24%)
CMYK	cmyk(62.3%, 73.8%, 0%, 76.1%)
CIE-LAB	lab(8.04, 18.40, -27.77)
CIE-LCH	lch(8.04, 33.31, 303.52°)
OKLab	oklab(21.5% 0.0201 -0.0798)
OKLCH	oklch(21.5% 0.082 284.2)
XYZ	xyz(1.3807, 0.8896, 4.5129)
Luminance	0.0089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17103D #363D10

analogous

#10203D #17103D #2D103D

triadic

#17103D #3D1710 #103D17

tetradic

#17103D #3D1020 #363D10 #103D2D

square

#17103D #3D1020 #363D10 #103D2D

split-complementary

#17103D #3D2D10 #203D10

monochromatic

#090618 #090618 #17103D #291D6D #3C299E

Accessibility & contrast

On white

17.83

#17103D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#17103D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17103D

17.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17103D	#FFFFFF	#000000	##FFFFFF
##17103D	1.00	17.83	1.18	17.83
#FFFFFF	17.83	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.83	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193E

Deuteranopia (green-blind)

#00163C

Tritanopia (blue-blind)

#071B24

Achromatopsia (no color)

#181818

Design tokens & code

CSS

--color: #17103d;
/* rgb */ color: rgb(23, 16, 61);
/* oklch */ color: oklch(21.5% 0.082 284.2);

Tailwind

colors: {
  custom: {
    50: '#594e73',
    500: '#17103d',
    950: '#000000',
  },
}

SCSS

$custom: #17103d;
$custom-light: #594e73;
$custom-dark: #000000;

JSON

{
  "hex": "#17103d",
  "rgb": {
    "r": 23,
    "g": 16,
    "b": 61
  },
  "hsl": {
    "h": 249.333,
    "s": 58.442,
    "l": 15.098
  },
  "oklch": {
    "l": 0.21499,
    "c": 0.08226,
    "h": 284.2
  },
  "luminance": 0.0089
}

Semantic roles & 50–950 ramp

primary

#17103D

secondary

#6C7732

accent

#E246C9

background

#F5F4F7

surface

#E9E7ED

border

#C5C3C8

text

#040108

muted

#79777B

Preview Lab

Preview with #17103D

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

Preview Lab → · Contrast checker → · Palette generator →