#171C65#171C65

#171C65 is a dark, vivid blue. Relative luminance 0.020; OKLCH L 28.0% C 0.126 H 272.0°. Best body text is #FFFFFF at 15.10:1 contrast (WCAG AA passes).

Color values

HEX	#171C65
RGB	rgb(23, 28, 101)
HSL	hsl(236, 63%, 24%)
HSV	hsv(236, 77%, 40%)
CMYK	cmyk(77.2%, 72.3%, 0%, 60.4%)
CIE-LAB	lab(15.23, 25.42, -43.41)
CIE-LCH	lch(15.23, 50.30, 300.35°)
OKLab	oklab(27.97% 0.0045 -0.1255)
OKLCH	oklch(27.97% 0.126 272)
XYZ	xyz(3.1168, 1.9519, 12.5219)
Luminance	0.0195 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C65 #656017

analogous

#174365 #171C65 #391765

triadic

#171C65 #65171C #1C6517

tetradic

#171C65 #651743 #656017 #176539

square

#171C65 #651743 #656017 #176539

split-complementary

#171C65 #653917 #436517

monochromatic

#060719 #0C0E33 #171C65 #222A97 #2E38C9

Accessibility & contrast

On white

15.10

#171C65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.39

#171C65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C65

15.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C65	#FFFFFF	#000000	##FFFFFF
##171C65	1.00	15.10	1.39	15.10
#FFFFFF	15.10	1.00	21.00	1.00
#000000	1.39	21.00	1.00	21.00
##FFFFFF	15.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002A67

Deuteranopia (green-blind)

#002264

Tritanopia (blue-blind)

#00303E

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #171c65;
/* rgb */ color: rgb(23, 28, 101);
/* oklch */ color: oklch(28.0% 0.126 272.0);

Tailwind

colors: {
  custom: {
    50: '#625892',
    500: '#171c65',
    950: '#000000',
  },
}

SCSS

$custom: #171c65;
$custom-light: #625892;
$custom-dark: #000000;

JSON

{
  "hex": "#171c65",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 101
  },
  "hsl": {
    "h": 236.154,
    "s": 62.903,
    "l": 24.314
  },
  "oklch": {
    "l": 0.27968,
    "c": 0.12562,
    "h": 272
  },
  "luminance": 0.01952
}

Semantic roles & 50–950 ramp

primary

#171C65

secondary

#9B953C

accent

#DB42E6

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171C65

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

Preview Lab → · Contrast checker → · Palette generator →