#171EA0#171EA0

#171EA0 is a dark, vivid blue. Relative luminance 0.036; OKLCH L 35.1% C 0.199 H 268.3°. Best body text is #FFFFFF at 12.14:1 contrast (WCAG AA passes).

Color values

HEX	#171EA0
RGB	rgb(23, 30, 160)
HSL	hsl(237, 75%, 36%)
HSV	hsv(237, 86%, 63%)
CMYK	cmyk(85.6%, 81.3%, 0%, 37.3%)
CIE-LAB	lab(22.47, 45.35, -68.79)
CIE-LCH	lch(22.47, 82.39, 303.39°)
OKLab	oklab(35.11% -0.0059 -0.1993)
OKLCH	oklch(35.11% 0.199 268.3)
XYZ	xyz(7.1606, 3.6479, 33.5776)
Luminance	0.0365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171EA0 #A09917

analogous

#1762A0 #171EA0 #5417A0

triadic

#171EA0 #A0171E #1EA017

tetradic

#171EA0 #A01762 #A09917 #17A054

square

#171EA0 #A01762 #A09917 #17A054

split-complementary

#171EA0 #A05417 #62A017

monochromatic

#080A35 #0F146A #171EA0 #1F28D6 #4C54E5

Accessibility & contrast

On white

12.14

#171EA0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.73

#171EA0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171EA0

12.14:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171EA0	#FFFFFF	#000000	##FFFFFF
##171EA0	1.00	12.14	1.73	12.14
#FFFFFF	12.14	1.00	21.00	1.00
#000000	1.73	21.00	1.00	21.00
##FFFFFF	12.14	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003DA4

Deuteranopia (green-blind)

#002E9E

Tritanopia (blue-blind)

#004760

Achromatopsia (no color)

#363636

Design tokens & code

CSS

--color: #171ea0;
/* rgb */ color: rgb(23, 30, 160);
/* oklch */ color: oklch(35.1% 0.199 268.3);

Tailwind

colors: {
  custom: {
    50: '#725dbe',
    500: '#171ea0',
    950: '#000000',
  },
}

SCSS

$custom: #171ea0;
$custom-light: #725dbe;
$custom-dark: #000000;

JSON

{
  "hex": "#171ea0",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 160
  },
  "hsl": {
    "h": 236.934,
    "s": 74.863,
    "l": 35.882
  },
  "oklch": {
    "l": 0.3511,
    "c": 0.19938,
    "h": 268.3
  },
  "luminance": 0.03649
}

Semantic roles & 50–950 ramp

primary

#171EA0

secondary

#C7C14C

accent

#E836F1

background

#F7F5FB

surface

#EEE9F7

border

#C9C5D0

text

#0A0412

muted

#7C7981

Preview Lab

Preview with #171EA0

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

Preview Lab → · Contrast checker → · Palette generator →