#171DFF#171DFF

#171DFF is a mid, highly saturated blue. Relative luminance 0.083; OKLCH L 46.8% C 0.302 H 265.9°. Best body text is #FFFFFF at 7.91:1 contrast (WCAG AA passes).

Color values

HEX	#171DFF
RGB	rgb(23, 29, 255)
HSL	hsl(238, 100%, 55%)
HSV	hsv(238, 91%, 100%)
CMYK	cmyk(91%, 88.6%, 0%, 0%)
CIE-LAB	lab(34.56, 73.60, -104.07)
CIE-LCH	lch(34.56, 127.47, 305.27°)
OKLab	oklab(46.84% -0.0216 -0.3011)
OKLCH	oklch(46.84% 0.302 265.9)
XYZ	xyz(18.8365, 8.2784, 95.1934)
Luminance	0.0828 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171DFF #FFF917

analogous

#1791FF #171DFF #8517FF

triadic

#171DFF #FF171D #1DFF17

tetradic

#171DFF #FF1791 #FFF917 #17FF85

square

#171DFF #FF1791 #FFF917 #17FF85

split-complementary

#171DFF #FF8517 #91FF17

monochromatic

#00049C #0006D9 #171DFF #5459FF #9194FF

Accessibility & contrast

On white

7.91

#171DFF on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.66

#171DFF on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171DFF

7.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171DFF	#FFFFFF	#000000	##FFFFFF
##171DFF	1.00	7.91	2.66	7.91
#FFFFFF	7.91	1.00	21.00	1.00
#000000	2.66	21.00	1.00	21.00
##FFFFFF	7.91	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#005DFF

Deuteranopia (green-blind)

#0044FC

Tritanopia (blue-blind)

#006F98

Achromatopsia (no color)

#515151

Design tokens & code

CSS

--color: #171dff;
/* rgb */ color: rgb(23, 29, 255);
/* oklch */ color: oklch(46.8% 0.302 265.9);

Tailwind

colors: {
  custom: {
    50: '#8b65ff',
    500: '#171dff',
    950: '#000000',
  },
}

SCSS

$custom: #171dff;
$custom-light: #8b65ff;
$custom-dark: #000000;

JSON

{
  "hex": "#171dff",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 255
  },
  "hsl": {
    "h": 238.448,
    "s": 100,
    "l": 54.51
  },
  "oklch": {
    "l": 0.4684,
    "c": 0.30185,
    "h": 265.9
  },
  "luminance": 0.08281
}

Semantic roles & 50–950 ramp

primary

#171DFF

secondary

#EAE788

accent

#F929FF

background

#FAF6FF

surface

#F3EBFF

border

#CDC6D7

text

#0F0618

muted

#7F7A86

Preview Lab

Preview with #171DFF

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

Preview Lab → · Contrast checker → · Palette generator →