#171B65#171B65

#171B65 is a dark, vivid blue. Relative luminance 0.019; OKLCH L 27.8% C 0.127 H 272.3°. Best body text is #FFFFFF at 15.20:1 contrast (WCAG AA passes).

Color values

HEX	#171B65
RGB	rgb(23, 27, 101)
HSL	hsl(237, 63%, 24%)
HSV	hsv(237, 77%, 40%)
CMYK	cmyk(77.2%, 73.3%, 0%, 60.4%)
CIE-LAB	lab(14.98, 26.10, -43.82)
CIE-LCH	lch(14.98, 51.00, 300.77°)
OKLab	oklab(27.79% 0.0051 -0.1267)
OKLCH	oklch(27.79% 0.127 272.3)
XYZ	xyz(3.0935, 1.9053, 12.5141)
Luminance	0.0191 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#171B65 #656117

analogous

#174265 #171B65 #3A1765

triadic

#171B65 #65171B #1B6517

tetradic

#171B65 #651742 #656117 #17653A

square

#171B65 #651742 #656117 #17653A

split-complementary

#171B65 #653A17 #426517

monochromatic

#060719 #0C0E33 #171B65 #222897 #2E36C9

Accessibility & contrast

On white

15.20

#171B65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.38

#171B65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #171B65

15.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##171B65	#FFFFFF	#000000	##FFFFFF
##171B65	1.00	15.20	1.38	15.20
#FFFFFF	15.20	1.00	21.00	1.00
#000000	1.38	21.00	1.00	21.00
##FFFFFF	15.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#002967

Deuteranopia (green-blind)

#002264

Tritanopia (blue-blind)

#002F3D

Achromatopsia (no color)

#262626

Design tokens & code

CSS

--color: #171b65;
/* rgb */ color: rgb(23, 27, 101);
/* oklch */ color: oklch(27.8% 0.127 272.3);

Tailwind

colors: {
  custom: {
    50: '#625792',
    500: '#171b65',
    950: '#000000',
  },
}

SCSS

$custom: #171b65;
$custom-light: #625792;
$custom-dark: #000000;

JSON

{
  "hex": "#171b65",
  "rgb": {
    "r": 23,
    "g": 27,
    "b": 101
  },
  "hsl": {
    "h": 236.923,
    "s": 62.903,
    "l": 24.314
  },
  "oklch": {
    "l": 0.27787,
    "c": 0.12685,
    "h": 272.3
  },
  "luminance": 0.01906
}

Semantic roles & 50–950 ramp

primary

#171B65

secondary

#9B973C

accent

#DE42E6

background

#F6F5F9

surface

#EBE9F1

border

#C6C5CB

text

#06030D

muted

#7A787E

Preview Lab

Preview with #171B65

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

Preview Lab → · Contrast checker → · Palette generator →