#171D7C#171D7C

#171D7C is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.7% C 0.156 H 270.2°. Best body text is #FFFFFF at 13.97:1 contrast (WCAG AA passes).

Color values

HEX	#171D7C
RGB	rgb(23, 29, 124)
HSL	hsl(236, 69%, 29%)
HSV	hsv(236, 81%, 49%)
CMYK	cmyk(81.5%, 76.6%, 0%, 51.4%)
CIE-LAB	lab(17.99, 33.43, -53.78)
CIE-LCH	lch(17.99, 63.32, 301.87°)
OKLab	oklab(30.7% 0.0006 -0.1558)
OKLCH	oklch(30.7% 0.156 270.2)
XYZ	xyz(4.4296, 2.5156, 19.3170)
Luminance	0.0252 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D7C #7C7617

analogous

#17507C #171D7C #44177C

triadic

#171D7C #7C171D #1D7C17

tetradic

#171D7C #7C1750 #7C7617 #177C44

square

#171D7C #7C1750 #7C7617 #177C44

split-complementary

#171D7C #7C4417 #507C17

monochromatic

#05061A #0D1148 #171D7C #2129B0 #343ED9

Accessibility & contrast

On white

13.97

#171D7C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#171D7C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D7C

13.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D7C	#FFFFFF	#000000	##FFFFFF
##171D7C	1.00	13.97	1.50	13.97
#FFFFFF	13.97	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#00317F

Deuteranopia (green-blind)

#00277A

Tritanopia (blue-blind)

#00394B

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #171d7c;
/* rgb */ color: rgb(23, 29, 124);
/* oklch */ color: oklch(30.7% 0.156 270.2);

Tailwind

colors: {
  custom: {
    50: '#685aa3',
    500: '#171d7c',
    950: '#000000',
  },
}

SCSS

$custom: #171d7c;
$custom-light: #685aa3;
$custom-dark: #000000;

JSON

{
  "hex": "#171d7c",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 124
  },
  "hsl": {
    "h": 236.436,
    "s": 68.707,
    "l": 28.824
  },
  "oklch": {
    "l": 0.30702,
    "c": 0.15576,
    "h": 270.2
  },
  "luminance": 0.02516
}

Semantic roles & 50–950 ramp

primary

#171D7C

secondary

#B1AA3E

accent

#E13CEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #171D7C

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

Preview Lab → · Contrast checker → · Palette generator →