#171D86#171D86

#171D86 is a dark, vivid blue. Relative luminance 0.028; OKLCH L 31.9% C 0.169 H 269.6°. Best body text is #FFFFFF at 13.49:1 contrast (WCAG AA passes).

Color values

HEX	#171D86
RGB	rgb(23, 29, 134)
HSL	hsl(237, 71%, 31%)
HSV	hsv(237, 83%, 53%)
CMYK	cmyk(82.8%, 78.4%, 0%, 47.5%)
CIE-LAB	lab(19.15, 37.02, -58.20)
CIE-LCH	lch(19.15, 68.98, 302.46°)
OKLab	oklab(31.87% -0.0011 -0.1686)
OKLCH	oklch(31.87% 0.169 269.6)
XYZ	xyz(5.0943, 2.7815, 22.8180)
Luminance	0.0278 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D86 #868017

analogous

#175486 #171D86 #481786

triadic

#171D86 #86171D #1D8617

tetradic

#171D86 #861754 #868017 #178648

square

#171D86 #861754 #868017 #178648

split-complementary

#171D86 #864817 #548617

monochromatic

#05061E #0E1252 #171D86 #2028BA #3A43DD

Accessibility & contrast

On white

13.49

#171D86 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.56

#171D86 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D86

13.49:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D86	#FFFFFF	#000000	##FFFFFF
##171D86	1.00	13.49	1.56	13.49
#FFFFFF	13.49	1.00	21.00	1.00
#000000	1.56	21.00	1.00	21.00
##FFFFFF	13.49	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003489

Deuteranopia (green-blind)

#002984

Tritanopia (blue-blind)

#003D50

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #171d86;
/* rgb */ color: rgb(23, 29, 134);
/* oklch */ color: oklch(31.9% 0.169 269.6);

Tailwind

colors: {
  custom: {
    50: '#6b5aaa',
    500: '#171d86',
    950: '#000000',
  },
}

SCSS

$custom: #171d86;
$custom-light: #6b5aaa;
$custom-dark: #000000;

JSON

{
  "hex": "#171d86",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 134
  },
  "hsl": {
    "h": 236.757,
    "s": 70.701,
    "l": 30.784
  },
  "oklch": {
    "l": 0.31865,
    "c": 0.16859,
    "h": 269.6
  },
  "luminance": 0.02782
}

Semantic roles & 50–950 ramp

primary

#171D86

secondary

#BAB33F

accent

#E43AED

background

#F7F5FA

surface

#EDE9F4

border

#C8C5CE

text

#080410

muted

#7B797F

Preview Lab

Preview with #171D86

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

Preview Lab → · Contrast checker → · Palette generator →