#171B90#171B90

#171B90 is a dark, vivid blue. Relative luminance 0.030; OKLCH L 32.8% C 0.183 H 269.3°. Best body text is #FFFFFF at 13.16:1 contrast (WCAG AA passes).

Color values

HEX	#171B90
RGB	rgb(23, 27, 144)
HSL	hsl(238, 72%, 33%)
HSV	hsv(238, 84%, 56%)
CMYK	cmyk(84%, 81.3%, 0%, 43.5%)
CIE-LAB	lab(19.96, 41.60, -63.11)
CIE-LCH	lch(19.96, 75.58, 303.39°)
OKLab	oklab(32.79% -0.0024 -0.1828)
OKLCH	oklch(32.79% 0.183 269.3)
XYZ	xyz(5.7776, 2.9790, 26.6506)
Luminance	0.0298 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B90 #908C17

analogous

#175790 #171B90 #501790

triadic

#171B90 #90171B #1B9017

tetradic

#171B90 #901757 #908C17 #179050

square

#171B90 #901757 #908C17 #179050

split-complementary

#171B90 #905017 #579017

monochromatic

#060726 #0F115B #171B90 #1F25C5 #4146E1

Accessibility & contrast

On white

13.16

#171B90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.60

#171B90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B90

13.16:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B90	#FFFFFF	#000000	##FFFFFF
##171B90	1.00	13.16	1.60	13.16
#FFFFFF	13.16	1.00	21.00	1.00
#000000	1.60	21.00	1.00	21.00
##FFFFFF	13.16	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003693

Deuteranopia (green-blind)

#002A8E

Tritanopia (blue-blind)

#004056

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #171b90;
/* rgb */ color: rgb(23, 27, 144);
/* oklch */ color: oklch(32.8% 0.183 269.3);

Tailwind

colors: {
  custom: {
    50: '#6e5ab2',
    500: '#171b90',
    950: '#000000',
  },
}

SCSS

$custom: #171b90;
$custom-light: #6e5ab2;
$custom-dark: #000000;

JSON

{
  "hex": "#171b90",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 144
  },
  "hsl": {
    "h": 238.017,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.32786,
    "c": 0.18281,
    "h": 269.3
  },
  "luminance": 0.0298
}

Semantic roles & 50–950 ramp

primary

#171B90

secondary

#C1BD42

accent

#E939EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #171B90

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

Preview Lab → · Contrast checker → · Palette generator →