#171A6B#171A6B

#171A6B is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.3% C 0.136 H 272.0°. Best body text is #FFFFFF at 15.04:1 contrast (WCAG AA passes).

Color values

HEX	#171A6B
RGB	rgb(23, 26, 107)
HSL	hsl(238, 65%, 25%)
HSV	hsv(238, 79%, 42%)
CMYK	cmyk(78.5%, 75.7%, 0%, 58%)
CIE-LAB	lab(15.39, 29.04, -47.09)
CIE-LCH	lch(15.39, 55.32, 301.66°)
OKLab	oklab(28.28% 0.0048 -0.1363)
OKLCH	oklch(28.28% 0.136 272)
XYZ	xyz(3.3757, 1.9821, 14.1118)
Luminance	0.0198 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171A6B #6B6817

analogous

#17446B #171A6B #3E176B

triadic

#171A6B #6B171A #1A6B17

tetradic

#171A6B #6B1744 #6B6817 #176B3E

square

#171A6B #6B1744 #6B6817 #176B3E

split-complementary

#171A6B #6B3E17 #446B17

monochromatic

#050619 #0C0E39 #171A6B #22269D #2D32D0

Accessibility & contrast

On white

15.04

#171A6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.40

#171A6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171A6B

15.04:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171A6B	#FFFFFF	#000000	##FFFFFF
##171A6B	1.00	15.04	1.40	15.04
#FFFFFF	15.04	1.00	21.00	1.00
#000000	1.40	21.00	1.00	21.00
##FFFFFF	15.04	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002B6D

Deuteranopia (green-blind)

#00226A

Tritanopia (blue-blind)

#003140

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #171a6b;
/* rgb */ color: rgb(23, 26, 107);
/* oklch */ color: oklch(28.3% 0.136 272.0);

Tailwind

colors: {
  custom: {
    50: '#645796',
    500: '#171a6b',
    950: '#000000',
  },
}

SCSS

$custom: #171a6b;
$custom-light: #645796;
$custom-dark: #000000;

JSON

{
  "hex": "#171a6b",
  "rgb": {
    "r": 23,
    "g": 26,
    "b": 107
  },
  "hsl": {
    "h": 237.857,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.28279,
    "c": 0.13635,
    "h": 272
  },
  "luminance": 0.01982
}

Semantic roles & 50–950 ramp

primary

#171A6B

secondary

#A19D3D

accent

#E240E8

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171A6B

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

Preview Lab → · Contrast checker → · Palette generator →