#171B62#171B62

#171B62 is a dark, vivid blue. Relative luminance 0.018; OKLCH L 27.5% C 0.123 H 272.6°. Best body text is #FFFFFF at 15.33:1 contrast (WCAG AA passes).

Color values

HEX	#171B62
RGB	rgb(23, 27, 98)
HSL	hsl(237, 62%, 24%)
HSV	hsv(237, 77%, 38%)
CMYK	cmyk(76.5%, 72.4%, 0%, 61.6%)
CIE-LAB	lab(14.67, 24.93, -42.36)
CIE-LCH	lch(14.67, 49.15, 300.48°)
OKLab	oklab(27.46% 0.0055 -0.1225)
OKLCH	oklch(27.46% 0.123 272.6)
XYZ	xyz(2.9491, 1.8476, 11.7541)
Luminance	0.0185 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B62 #625E17

analogous

#174062 #171B62 #381762

triadic

#171B62 #62171B #1B6217

tetradic

#171B62 #621740 #625E17 #176238

square

#171B62 #621740 #625E17 #176238

split-complementary

#171B62 #623817 #406217

monochromatic

#060719 #0B0D30 #171B62 #232994 #2E36C5

Accessibility & contrast

On white

15.33

#171B62 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.37

#171B62 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B62

15.33:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B62	#FFFFFF	#000000	##FFFFFF
##171B62	1.00	15.33	1.37	15.33
#FFFFFF	15.33	1.00	21.00	1.00
#000000	1.37	21.00	1.00	21.00
##FFFFFF	15.33	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002964

Deuteranopia (green-blind)

#002161

Tritanopia (blue-blind)

#002E3C

Achromatopsia (no color)

#252525

Design tokens & code

CSS

--color: #171b62;
/* rgb */ color: rgb(23, 27, 98);
/* oklch */ color: oklch(27.5% 0.123 272.6);

Tailwind

colors: {
  custom: {
    50: '#61578f',
    500: '#171b62',
    950: '#000000',
  },
}

SCSS

$custom: #171b62;
$custom-light: #61578f;
$custom-dark: #000000;

JSON

{
  "hex": "#171b62",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 98
  },
  "hsl": {
    "h": 236.8,
    "s": 61.983,
    "l": 23.725
  },
  "oklch": {
    "l": 0.27462,
    "c": 0.12259,
    "h": 272.6
  },
  "luminance": 0.01848
}

Semantic roles & 50–950 ramp

primary

#171B62

secondary

#99943C

accent

#DC43E5

background

#F6F5F8

surface

#EBE9F0

border

#C6C5CB

text

#06030C

muted

#7A787D

Preview Lab

Preview with #171B62

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

Preview Lab → · Contrast checker → · Palette generator →