#171C7D#171C7D

#171C7D is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.158 H 270.3°. Best body text is #FFFFFF at 14.01:1 contrast (WCAG AA passes).

Color values

HEX	#171C7D
RGB	rgb(23, 28, 125)
HSL	hsl(237, 69%, 29%)
HSV	hsv(237, 82%, 49%)
CMYK	cmyk(81.6%, 77.6%, 0%, 51%)
CIE-LAB	lab(17.89, 34.41, -54.59)
CIE-LCH	lch(17.89, 64.52, 302.22°)
OKLab	oklab(30.66% 0.0008 -0.1581)
OKLCH	oklch(30.66% 0.158 270.3)
XYZ	xyz(4.4690, 2.4928, 19.6437)
Luminance	0.0249 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C7D #7D7817

analogous

#174F7D #171C7D #45177D

triadic

#171C7D #7D171C #1C7D17

tetradic

#171C7D #7D174F #7D7817 #177D45

square

#171C7D #7D174F #7D7817 #177D45

split-complementary

#171C7D #7D4517 #4F7D17

monochromatic

#05061A #0D1049 #171C7D #2128B1 #353DDA

Accessibility & contrast

On white

14.01

#171C7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#171C7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C7D

14.01:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C7D	#FFFFFF	#000000	##FFFFFF
##171C7D	1.00	14.01	1.50	14.01
#FFFFFF	14.01	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	14.01	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003180

Deuteranopia (green-blind)

#00277B

Tritanopia (blue-blind)

#00394B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #171c7d;
/* rgb */ color: rgb(23, 28, 125);
/* oklch */ color: oklch(30.7% 0.158 270.3);

Tailwind

colors: {
  custom: {
    50: '#6959a4',
    500: '#171c7d',
    950: '#000000',
  },
}

SCSS

$custom: #171c7d;
$custom-light: #6959a4;
$custom-dark: #000000;

JSON

{
  "hex": "#171c7d",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 125
  },
  "hsl": {
    "h": 237.059,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30663,
    "c": 0.1581,
    "h": 270.3
  },
  "luminance": 0.02493
}

Semantic roles & 50–950 ramp

primary

#171C7D

secondary

#B2AC3E

accent

#E33CEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07030F

muted

#7A787F

Preview Lab

Preview with #171C7D

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

Preview Lab → · Contrast checker → · Palette generator →