#171B96#171B96

#171B96 is a dark, vivid blue. Relative luminance 0.032; OKLCH L 33.5% C 0.190 H 268.9°. Best body text is #FFFFFF at 12.86:1 contrast (WCAG AA passes).

Color values

HEX	#171B96
RGB	rgb(23, 27, 150)
HSL	hsl(238, 73%, 34%)
HSV	hsv(238, 85%, 59%)
CMYK	cmyk(84.7%, 82%, 0%, 41.2%)
CIE-LAB	lab(20.70, 43.60, -65.59)
CIE-LCH	lch(20.70, 78.76, 303.61°)
OKLab	oklab(33.52% -0.0035 -0.19)
OKLCH	oklch(33.52% 0.19 268.9)
XYZ	xyz(6.2484, 3.1673, 29.1303)
Luminance	0.0317 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B96 #969217

analogous

#175B96 #171B96 #531796

triadic

#171B96 #96171B #1B9617

tetradic

#171B96 #96175B #969217 #179653

square

#171B96 #96175B #969217 #179653

split-complementary

#171B96 #965317 #5B9617

monochromatic

#07082C #0F1161 #171B96 #1F25CB #454AE2

Accessibility & contrast

On white

12.86

#171B96 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.63

#171B96 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B96

12.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B96	#FFFFFF	#000000	##FFFFFF
##171B96	1.00	12.86	1.63	12.86
#FFFFFF	12.86	1.00	21.00	1.00
#000000	1.63	21.00	1.00	21.00
##FFFFFF	12.86	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003899

Deuteranopia (green-blind)

#002B94

Tritanopia (blue-blind)

#004259

Achromatopsia (no color)

#323232

Design tokens & code

CSS

--color: #171b96;
/* rgb */ color: rgb(23, 27, 150);
/* oklch */ color: oklch(33.5% 0.190 268.9);

Tailwind

colors: {
  custom: {
    50: '#705ab6',
    500: '#171b96',
    950: '#000000',
  },
}

SCSS

$custom: #171b96;
$custom-light: #705ab6;
$custom-dark: #000000;

JSON

{
  "hex": "#171b96",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 150
  },
  "hsl": {
    "h": 238.11,
    "s": 73.41,
    "l": 33.922
  },
  "oklch": {
    "l": 0.33519,
    "c": 0.19001,
    "h": 268.9
  },
  "luminance": 0.03168
}

Semantic roles & 50–950 ramp

primary

#171B96

secondary

#C3BF45

accent

#EA38F0

background

#F7F5FB

surface

#EDE9F6

border

#C8C5D0

text

#090411

muted

#7B7980

Preview Lab

Preview with #171B96

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

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