#171D6F#171D6F

#171D6F is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.2% C 0.138 H 271.1°. Best body text is #FFFFFF at 14.57:1 contrast (WCAG AA passes).

Color values

HEX	#171D6F
RGB	rgb(23, 29, 111)
HSL	hsl(236, 66%, 26%)
HSV	hsv(236, 79%, 44%)
CMYK	cmyk(79.3%, 73.9%, 0%, 56.5%)
CIE-LAB	lab(16.54, 28.58, -47.80)
CIE-LCH	lch(16.54, 55.69, 300.88°)
OKLab	oklab(29.24% 0.0026 -0.1383)
OKLCH	oklch(29.24% 0.138 271.1)
XYZ	xyz(3.6610, 2.2082, 15.2691)
Luminance	0.0221 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D6F #6F6917

analogous

#17496F #171D6F #3D176F

triadic

#171D6F #6F171D #1D6F17

tetradic

#171D6F #6F1749 #6F6917 #176F3D

square

#171D6F #6F1749 #6F6917 #176F3D

split-complementary

#171D6F #6F3D17 #496F17

monochromatic

#050719 #0C103C #171D6F #222AA2 #2D38D3

Accessibility & contrast

On white

14.57

#171D6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.44

#171D6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D6F

14.57:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D6F	#FFFFFF	#000000	##FFFFFF
##171D6F	1.00	14.57	1.44	14.57
#FFFFFF	14.57	1.00	21.00	1.00
#000000	1.44	21.00	1.00	21.00
##FFFFFF	14.57	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D71

Deuteranopia (green-blind)

#00256E

Tritanopia (blue-blind)

#003443

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171d6f;
/* rgb */ color: rgb(23, 29, 111);
/* oklch */ color: oklch(29.2% 0.138 271.1);

Tailwind

colors: {
  custom: {
    50: '#645999',
    500: '#171d6f',
    950: '#000000',
  },
}

SCSS

$custom: #171d6f;
$custom-light: #645999;
$custom-dark: #000000;

JSON

{
  "hex": "#171d6f",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 111
  },
  "hsl": {
    "h": 235.909,
    "s": 65.672,
    "l": 26.275
  },
  "oklch": {
    "l": 0.29236,
    "c": 0.13837,
    "h": 271.1
  },
  "luminance": 0.02209
}

Semantic roles & 50–950 ramp

primary

#171D6F

secondary

#A59E3D

accent

#DD3FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #171D6F

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

Preview Lab → · Contrast checker → · Palette generator →