#171A66#171A66

#171A66 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.7% C 0.129 H 272.5°. Best body text is #FFFFFF at 15.26:1 contrast (WCAG AA passes).

Color values

HEX	#171A66
RGB	rgb(23, 26, 102)
HSL	hsl(238, 63%, 25%)
HSV	hsv(238, 77%, 40%)
CMYK	cmyk(77.5%, 74.5%, 0%, 60%)
CIE-LAB	lab(14.84, 27.15, -44.71)
CIE-LCH	lch(14.84, 52.31, 301.27°)
OKLab	oklab(27.72% 0.0056 -0.1293)
OKLCH	oklch(27.72% 0.129 272.5)
XYZ	xyz(3.1202, 1.8799, 12.7662)
Luminance	0.0188 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A66 #666317

analogous

#174166 #171A66 #3C1766

triadic

#171A66 #66171A #1A6617

tetradic

#171A66 #661741 #666317 #17663C

square

#171A66 #661741 #666317 #17663C

split-complementary

#171A66 #663C17 #416617

monochromatic

#060619 #0C0D34 #171A66 #222798 #2E33CA

Accessibility & contrast

On white

15.26

#171A66 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#171A66 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A66

15.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A66	#FFFFFF	#000000	##FFFFFF
##171A66	1.00	15.26	1.38	15.26
#FFFFFF	15.26	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.26	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002968

Deuteranopia (green-blind)

#002265

Tritanopia (blue-blind)

#002F3E

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171a66;
/* rgb */ color: rgb(23, 26, 102);
/* oklch */ color: oklch(27.7% 0.129 272.5);

Tailwind

colors: {
  custom: {
    50: '#625793',
    500: '#171a66',
    950: '#000000',
  },
}

SCSS

$custom: #171a66;
$custom-light: #625793;
$custom-dark: #000000;

JSON

{
  "hex": "#171a66",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 102
  },
  "hsl": {
    "h": 237.722,
    "s": 63.2,
    "l": 24.51
  },
  "oklch": {
    "l": 0.2772,
    "c": 0.12946,
    "h": 272.5
  },
  "luminance": 0.0188
}

Semantic roles & 50–950 ramp

primary

#171A66

secondary

#9C993C

accent

#E042E6

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171A66

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

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