#172B65#172B65

#172B65 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 31.1% C 0.106 H 266.0°. Best body text is #FFFFFF at 13.38:1 contrast (WCAG AA passes).

Color values

HEX	#172B65
RGB	rgb(23, 43, 101)
HSL	hsl(225, 63%, 24%)
HSV	hsv(225, 77%, 40%)
CMYK	cmyk(77.2%, 57.4%, 0%, 60.4%)
CIE-LAB	lab(19.43, 14.66, -36.56)
CIE-LCH	lch(19.43, 39.39, 291.86°)
OKLab	oklab(31.08% -0.0073 -0.1053)
OKLCH	oklch(31.08% 0.106 266)
XYZ	xyz(3.5654, 2.8491, 12.6714)
Luminance	0.0285 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B65 #655117

analogous

#175265 #172B65 #2A1765

triadic

#172B65 #65172B #2B6517

tetradic

#172B65 #651752 #655117 #17652A

square

#172B65 #651752 #655117 #17652A

split-complementary

#172B65 #652A17 #526517

monochromatic

#060B19 #0C1633 #172B65 #224097 #2E55C9

Accessibility & contrast

On white

13.38

#172B65 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#172B65 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B65

13.38:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B65	#FFFFFF	#000000	##FFFFFF
##172B65	1.00	13.38	1.57	13.38
#FFFFFF	13.38	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.38	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003367

Deuteranopia (green-blind)

#002C64

Tritanopia (blue-blind)

#003943

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172b65;
/* rgb */ color: rgb(23, 43, 101);
/* oklch */ color: oklch(31.1% 0.106 266.0);

Tailwind

colors: {
  custom: {
    50: '#606391',
    500: '#172b65',
    950: '#000000',
  },
}

SCSS

$custom: #172b65;
$custom-light: #606391;
$custom-dark: #000000;

JSON

{
  "hex": "#172b65",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 101
  },
  "hsl": {
    "h": 224.615,
    "s": 62.903,
    "l": 24.314
  },
  "oklch": {
    "l": 0.31076,
    "c": 0.10553,
    "h": 266
  },
  "luminance": 0.02849
}

Semantic roles & 50–950 ramp

primary

#172B65

secondary

#9B833C

accent

#BC42E6

background

#F6F5F9

surface

#EBEAF1

border

#C6C6CB

text

#05050D

muted

#7A797E

Preview Lab

Preview with #172B65

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

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