#171C5E#171C5E

#171C5E is a dark, moderate blue. Relative luminance 0.018; OKLCH L 27.2% C 0.116 H 272.6°. Best body text is #FFFFFF at 15.39:1 contrast (WCAG AA passes).

Color values

HEX	#171C5E
RGB	rgb(23, 28, 94)
HSL	hsl(236, 61%, 23%)
HSV	hsv(236, 76%, 37%)
CMYK	cmyk(75.5%, 70.2%, 0%, 63.1%)
CIE-LAB	lab(14.52, 22.67, -39.94)
CIE-LCH	lch(14.52, 45.93, 299.58°)
OKLab	oklab(27.23% 0.0052 -0.1154)
OKLCH	oklch(27.23% 0.116 272.6)
XYZ	xyz(2.7883, 1.8205, 10.7920)
Luminance	0.0182 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171C5E #5E5917

analogous

#173F5E #171C5E #35175E

triadic

#171C5E #5E171C #1C5E17

tetradic

#171C5E #5E173F #5E5917 #175E35

square

#171C5E #5E173F #5E5917 #175E35

split-complementary

#171C5E #5E3517 #3F5E17

monochromatic

#060719 #0B0D2D #171C5E #232B8F #2F39C0

Accessibility & contrast

On white

15.39

#171C5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.36

#171C5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171C5E

15.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171C5E	#FFFFFF	#000000	##FFFFFF
##171C5E	1.00	15.39	1.36	15.39
#FFFFFF	15.39	1.00	21.00	1.00
#000000	1.36	21.00	1.00	21.00
##FFFFFF	15.39	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002860

Deuteranopia (green-blind)

#00215D

Tritanopia (blue-blind)

#002D3A

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171c5e;
/* rgb */ color: rgb(23, 28, 94);
/* oklch */ color: oklch(27.2% 0.116 272.6);

Tailwind

colors: {
  custom: {
    50: '#60588c',
    500: '#171c5e',
    950: '#000000',
  },
}

SCSS

$custom: #171c5e;
$custom-light: #60588c;
$custom-dark: #000000;

JSON

{
  "hex": "#171c5e",
  "rgb": {
    "r": 23,
    "g": 28,
    "b": 94
  },
  "hsl": {
    "h": 235.775,
    "s": 60.684,
    "l": 22.941
  },
  "oklch": {
    "l": 0.27228,
    "c": 0.11552,
    "h": 272.6
  },
  "luminance": 0.01821
}

Semantic roles & 50–950 ramp

primary

#171C5E

secondary

#958F3C

accent

#D944E4

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#05030C

muted

#7A787D

Preview Lab

Preview with #171C5E

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

Preview Lab → · Contrast checker → · Palette generator →