#17187C#17187C

#17187C is a dark, vivid blue. Relative luminance 0.023; OKLCH L 30.0% C 0.161 H 270.9°. Best body text is #FFFFFF at 14.40:1 contrast (WCAG AA passes).

Color values

HEX	#17187C
RGB	rgb(23, 24, 124)
HSL	hsl(239, 69%, 29%)
HSV	hsv(239, 81%, 49%)
CMYK	cmyk(81.5%, 80.6%, 0%, 51.4%)
CIE-LAB	lab(16.94, 36.40, -55.51)
CIE-LCH	lch(16.94, 66.38, 303.26°)
OKLab	oklab(29.96% 0.0025 -0.1607)
OKLCH	oklch(29.96% 0.161 270.9)
XYZ	xyz(4.3168, 2.2902, 19.2794)
Luminance	0.0229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17187C #7C7B17

analogous

#174B7C #17187C #49177C

triadic

#17187C #7C1718 #187C17

tetradic

#17187C #7C174B #7C7B17 #177C49

square

#17187C #7C174B #7C7B17 #177C49

split-complementary

#17187C #7C4917 #4B7C17

monochromatic

#05051A #0D0E48 #17187C #2122B0 #3436D9

Accessibility & contrast

On white

14.40

#17187C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.46

#17187C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #17187C

14.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17187C	#FFFFFF	#000000	##FFFFFF
##17187C	1.00	14.40	1.46	14.40
#FFFFFF	14.40	1.00	21.00	1.00
#000000	1.46	21.00	1.00	21.00
##FFFFFF	14.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002F7F

Deuteranopia (green-blind)

#00257A

Tritanopia (blue-blind)

#00374A

Achromatopsia (no color)

#2A2A2A

Design tokens & code

CSS

--color: #17187c;
/* rgb */ color: rgb(23, 24, 124);
/* oklch */ color: oklch(30.0% 0.161 270.9);

Tailwind

colors: {
  custom: {
    50: '#6957a3',
    500: '#17187c',
    950: '#000000',
  },
}

SCSS

$custom: #17187c;
$custom-light: #6957a3;
$custom-dark: #000000;

JSON

{
  "hex": "#17187c",
  "rgb": {
    "r": 23,
    "g": 24,
    "b": 124
  },
  "hsl": {
    "h": 239.406,
    "s": 68.707,
    "l": 28.824
  },
  "oklch": {
    "l": 0.29961,
    "c": 0.16076,
    "h": 270.9
  },
  "luminance": 0.02291
}

Semantic roles & 50–950 ramp

primary

#17187C

secondary

#B1B03E

accent

#EA3CEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #17187C

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

Preview Lab → · Contrast checker → · Palette generator →