#171D7D#171D7D

#171D7D is a dark, vivid blue. Relative luminance 0.025; OKLCH L 30.8% C 0.157 H 270.2°. Best body text is #FFFFFF at 13.92:1 contrast (WCAG AA passes).

Color values

HEX	#171D7D
RGB	rgb(23, 29, 125)
HSL	hsl(236, 69%, 29%)
HSV	hsv(236, 82%, 49%)
CMYK	cmyk(81.6%, 76.8%, 0%, 51%)
CIE-LAB	lab(18.10, 33.79, -54.23)
CIE-LCH	lch(18.10, 63.90, 301.93°)
OKLab	oklab(30.82% 0.0004 -0.1571)
OKLCH	oklch(30.82% 0.157 270.2)
XYZ	xyz(4.4931, 2.5410, 19.6517)
Luminance	0.0254 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D7D #7D7717

analogous

#17507D #171D7D #44177D

triadic

#171D7D #7D171D #1D7D17

tetradic

#171D7D #7D1750 #7D7717 #177D44

square

#171D7D #7D1750 #7D7717 #177D44

split-complementary

#171D7D #7D4417 #507D17

monochromatic

#05061A #0D1149 #171D7D #2129B1 #353EDA

Accessibility & contrast

On white

13.92

#171D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.51

#171D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D7D

13.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D7D	#FFFFFF	#000000	##FFFFFF
##171D7D	1.00	13.92	1.51	13.92
#FFFFFF	13.92	1.00	21.00	1.00
#000000	1.51	21.00	1.00	21.00
##FFFFFF	13.92	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: #171d7d;
/* rgb */ color: rgb(23, 29, 125);
/* oklch */ color: oklch(30.8% 0.157 270.2);

Tailwind

colors: {
  custom: {
    50: '#685aa4',
    500: '#171d7d',
    950: '#000000',
  },
}

SCSS

$custom: #171d7d;
$custom-light: #685aa4;
$custom-dark: #000000;

JSON

{
  "hex": "#171d7d",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 125
  },
  "hsl": {
    "h": 236.471,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.30817,
    "c": 0.15706,
    "h": 270.2
  },
  "luminance": 0.02542
}

Semantic roles & 50–950 ramp

primary

#171D7D

secondary

#B2AB3E

accent

#E13CEC

background

#F6F5FA

surface

#ECE9F4

border

#C7C5CE

text

#07040F

muted

#7A797F

Preview Lab

Preview with #171D7D

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

Preview Lab → · Contrast checker → · Palette generator →