#171D70#171D70

#171D70 is a dark, vivid blue. Relative luminance 0.022; OKLCH L 29.3% C 0.140 H 271.0°. Best body text is #FFFFFF at 14.52:1 contrast (WCAG AA passes).

Color values

HEX	#171D70
RGB	rgb(23, 29, 112)
HSL	hsl(236, 66%, 26%)
HSV	hsv(236, 79%, 44%)
CMYK	cmyk(79.5%, 74.1%, 0%, 56.1%)
CIE-LAB	lab(16.65, 28.96, -48.27)
CIE-LCH	lch(16.65, 56.29, 300.97°)
OKLab	oklab(29.35% 0.0024 -0.1397)
OKLCH	oklch(29.35% 0.14 271)
XYZ	xyz(3.7164, 2.2303, 15.5607)
Luminance	0.0223 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171D70 #706A17

analogous

#174A70 #171D70 #3E1770

triadic

#171D70 #70171D #1D7017

tetradic

#171D70 #70174A #706A17 #17703E

square

#171D70 #70174A #706A17 #17703E

split-complementary

#171D70 #703E17 #4A7017

monochromatic

#050719 #0D103D #171D70 #212AA3 #2D39D4

Accessibility & contrast

On white

14.52

#171D70 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.45

#171D70 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171D70

14.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171D70	#FFFFFF	#000000	##FFFFFF
##171D70	1.00	14.52	1.45	14.52
#FFFFFF	14.52	1.00	21.00	1.00
#000000	1.45	21.00	1.00	21.00
##FFFFFF	14.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002D72

Deuteranopia (green-blind)

#00256E

Tritanopia (blue-blind)

#003444

Achromatopsia (no color)

#292929

Design tokens & code

CSS

--color: #171d70;
/* rgb */ color: rgb(23, 29, 112);
/* oklch */ color: oklch(29.3% 0.140 271.0);

Tailwind

colors: {
  custom: {
    50: '#65599a',
    500: '#171d70',
    950: '#000000',
  },
}

SCSS

$custom: #171d70;
$custom-light: #65599a;
$custom-dark: #000000;

JSON

{
  "hex": "#171d70",
  "rgb": {
    "r": 23,
    "g": 29,
    "b": 112
  },
  "hsl": {
    "h": 235.955,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.29347,
    "c": 0.13974,
    "h": 271
  },
  "luminance": 0.02231
}

Semantic roles & 50–950 ramp

primary

#171D70

secondary

#A69F3D

accent

#DD3FE9

background

#F6F5F9

surface

#EBE9F2

border

#C6C5CC

text

#06030E

muted

#7A787E

Preview Lab

Preview with #171D70

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

Preview Lab → · Contrast checker → · Palette generator →