#17103C#17103C

#17103C is a very dark, moderate blue. Relative luminance 0.009; OKLCH L 21.4% C 0.081 H 284.5°. Best body text is #FFFFFF at 17.86:1 contrast (WCAG AA passes).

Color values

HEX	#17103C
RGB	rgb(23, 16, 60)
HSL	hsl(250, 58%, 15%)
HSV	hsv(250, 73%, 24%)
CMYK	cmyk(61.7%, 73.3%, 0%, 76.5%)
CIE-LAB	lab(7.94, 18.02, -27.21)
CIE-LCH	lch(7.94, 32.64, 303.51°)
OKLab	oklab(21.4% 0.0203 -0.0781)
OKLCH	oklch(21.4% 0.081 284.5)
XYZ	xyz(1.3540, 0.8789, 4.3724)
Luminance	0.0088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Midnight Blue (survey)

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17103C #353C10

analogous

#101F3C #17103C #2D103C

triadic

#17103C #3C1710 #103C17

tetradic

#17103C #3C101F #353C10 #103C2D

square

#17103C #3C101F #353C10 #103C2D

split-complementary

#17103C #3C2D10 #1F3C10

monochromatic

#090618 #090618 #17103C #2A1D6C #3C2A9D

Accessibility & contrast

On white

17.86

#17103C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.18

#17103C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17103C

17.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17103C	#FFFFFF	#000000	##FFFFFF
##17103C	1.00	17.86	1.18	17.86
#FFFFFF	17.86	1.00	21.00	1.00
#000000	1.18	21.00	1.00	21.00
##FFFFFF	17.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00193D

Deuteranopia (green-blind)

#00163B

Tritanopia (blue-blind)

#081B24

Achromatopsia (no color)

#171717

Design tokens & code

CSS

--color: #17103c;
/* rgb */ color: rgb(23, 16, 60);
/* oklch */ color: oklch(21.4% 0.081 284.5);

Tailwind

colors: {
  custom: {
    50: '#594e72',
    500: '#17103c',
    950: '#000000',
  },
}

SCSS

$custom: #17103c;
$custom-light: #594e72;
$custom-dark: #000000;

JSON

{
  "hex": "#17103c",
  "rgb": {
    "r": 23,
    "g": 16,
    "b": 60
  },
  "hsl": {
    "h": 249.545,
    "s": 57.895,
    "l": 14.902
  },
  "oklch": {
    "l": 0.21399,
    "c": 0.0807,
    "h": 284.5
  },
  "luminance": 0.00879
}

Semantic roles & 50–950 ramp

primary

#17103C

secondary

#6B7632

accent

#E147C9

background

#F5F4F6

surface

#E9E7EC

border

#C5C3C7

text

#040108

muted

#79777B

Preview Lab

Preview with #17103C

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

Preview Lab → · Contrast checker → · Palette generator →