#171C7C#171C7C

#171C7C is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.5% C 0.157 H 270.4°. Best body text is #FFFFFF at 14.06:1 contrast (WCAG AA passes).

Color values

HEX	#171C7C
RGB	rgb(23, 28, 124)
HSL	hsl(237, 69%, 29%)
HSV	hsv(237, 81%, 49%)
CMYK	cmyk(81.5%, 77.4%, 0%, 51.4%)
CIE-LAB	lab(17.77, 34.04, -54.14)
CIE-LCH	lch(17.77, 63.95, 302.16°)
OKLab	oklab(30.55% 0.001 -0.1568)
OKLCH	oklch(30.55% 0.157 270.4)
XYZ	xyz(4.4055, 2.4674, 19.3089)
Luminance	0.0247 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C7C #7C7717

analogous

#174F7C #171C7C #45177C

triadic

#171C7C #7C171C #1C7C17

tetradic

#171C7C #7C174F #7C7717 #177C45

square

#171C7C #7C174F #7C7717 #177C45

split-complementary

#171C7C #7C4517 #4F7C17

monochromatic

#05061A #0D1048 #171C7C #2128B0 #343CD9

Accessibility & contrast

On white

14.06

#171C7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.49

#171C7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C7C

14.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C7C	#FFFFFF	#000000	##FFFFFF
##171C7C	1.00	14.06	1.49	14.06
#FFFFFF	14.06	1.00	21.00	1.00
#000000	1.49	21.00	1.00	21.00
##FFFFFF	14.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00307F

Deuteranopia (green-blind)

#00267A

Tritanopia (blue-blind)

#00384A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #171c7c;
/* rgb */ color: rgb(23, 28, 124);
/* oklch */ color: oklch(30.5% 0.157 270.4);

Tailwind

colors: {
  custom: {
    50: '#6859a3',
    500: '#171c7c',
    950: '#000000',
  },
}

SCSS

$custom: #171c7c;
$custom-light: #6859a3;
$custom-dark: #000000;

JSON

{
  "hex": "#171c7c",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 124
  },
  "hsl": {
    "h": 237.03,
    "s": 68.707,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30547,
    "c": 0.1568,
    "h": 270.4
  },
  "luminance": 0.02468
}

Semantic roles & 50–950 ramp

primary

#171C7C

secondary

#B1AB3E

accent

#E33CEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171C7C

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

Preview Lab → · Contrast checker → · Palette generator →