#171E90#171E90

#171E90 is a dark, vivid blue. Relative luminance 0.031; OKLCH L 33.2% C 0.180 H 269.0°. Best body text is #FFFFFF at 12.92:1 contrast (WCAG AA passes).

Color values

HEX	#171E90
RGB	rgb(23, 30, 144)
HSL	hsl(237, 72%, 33%)
HSV	hsv(237, 84%, 56%)
CMYK	cmyk(84%, 79.2%, 0%, 43.5%)
CIE-LAB	lab(20.53, 39.95, -62.16)
CIE-LCH	lch(20.53, 73.89, 302.73°)
OKLab	oklab(33.19% -0.0031 -0.1801)
OKLCH	oklch(33.19% 0.18 269)
XYZ	xyz(5.8499, 3.1236, 26.6747)
Luminance	0.0312 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171E90 #908917

analogous

#175A90 #171E90 #4C1790

triadic

#171E90 #90171E #1E9017

tetradic

#171E90 #90175A #908917 #17904C

square

#171E90 #90175A #908917 #17904C

split-complementary

#171E90 #904C17 #5A9017

monochromatic

#060826 #0F135B #171E90 #1F29C5 #414AE1

Accessibility & contrast

On white

12.92

#171E90 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.62

#171E90 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171E90

12.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171E90	#FFFFFF	#000000	##FFFFFF
##171E90	1.00	12.92	1.62	12.92
#FFFFFF	12.92	1.00	21.00	1.00
#000000	1.62	21.00	1.00	21.00
##FFFFFF	12.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003793

Deuteranopia (green-blind)

#002B8E

Tritanopia (blue-blind)

#004156

Achromatopsia (no color)

#313131

Design tokens & code

CSS

--color: #171e90;
/* rgb */ color: rgb(23, 30, 144);
/* oklch */ color: oklch(33.2% 0.180 269.0);

Tailwind

colors: {
  custom: {
    50: '#6e5cb2',
    500: '#171e90',
    950: '#000000',
  },
}

SCSS

$custom: #171e90;
$custom-light: #6e5cb2;
$custom-dark: #000000;

JSON

{
  "hex": "#171e90",
  "rgb": {
    "r": 23,
    "g": 30,
    "b": 144
  },
  "hsl": {
    "h": 236.529,
    "s": 72.455,
    "l": 32.745
  },
  "oklch": {
    "l": 0.33188,
    "c": 0.18011,
    "h": 269
  },
  "luminance": 0.03124
}

Semantic roles & 50–950 ramp

primary

#171E90

secondary

#C1BA42

accent

#E539EF

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #171E90

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

Preview Lab → · Contrast checker → · Palette generator →