#172B60#172B60

#172B60 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.6% C 0.098 H 265.4°. Best body text is #FFFFFF at 13.54:1 contrast (WCAG AA passes).

Color values

HEX	#172B60
RGB	rgb(23, 43, 96)
HSL	hsl(224, 61%, 23%)
HSV	hsv(224, 76%, 38%)
CMYK	cmyk(76%, 55.2%, 0%, 62.4%)
CIE-LAB	lab(19.03, 12.58, -33.92)
CIE-LCH	lch(19.03, 36.18, 290.34°)
OKLab	oklab(30.65% -0.0078 -0.0975)
OKLCH	oklch(30.65% 0.098 265.4)
XYZ	xyz(3.3278, 2.7541, 11.4203)
Luminance	0.0275 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B60 #604C17

analogous

#174F60 #172B60 #271760

triadic

#172B60 #60172B #2B6017

tetradic

#172B60 #60174F #604C17 #176027

square

#172B60 #60174F #604C17 #176027

split-complementary

#172B60 #602717 #4F6017

monochromatic

#060B19 #0B152F #172B60 #234191 #2F57C3

Accessibility & contrast

On white

13.54

#172B60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#172B60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B60

13.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B60	#FFFFFF	#000000	##FFFFFF
##172B60	1.00	13.54	1.55	13.54
#FFFFFF	13.54	1.00	21.00	1.00
#000000	1.55	21.00	1.00	21.00
##FFFFFF	13.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#093262

Deuteranopia (green-blind)

#002B5F

Tritanopia (blue-blind)

#003841

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172b60;
/* rgb */ color: rgb(23, 43, 96);
/* oklch */ color: oklch(30.6% 0.098 265.4);

Tailwind

colors: {
  custom: {
    50: '#5f638e',
    500: '#172b60',
    950: '#000000',
  },
}

SCSS

$custom: #172b60;
$custom-light: #5f638e;
$custom-dark: #000000;

JSON

{
  "hex": "#172b60",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 96
  },
  "hsl": {
    "h": 223.562,
    "s": 61.345,
    "l": 23.333
  },
  "oklch": {
    "l": 0.30648,
    "c": 0.09782,
    "h": 265.4
  },
  "luminance": 0.02754
}

Semantic roles & 50–950 ramp

primary

#172B60

secondary

#977E3C

accent

#B843E4

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #172B60

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

Preview Lab → · Contrast checker → · Palette generator →