#172C5C#172C5C

#172C5C is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.6% C 0.090 H 264.0°. Best body text is #FFFFFF at 13.54:1 contrast (WCAG AA passes).

Color values

HEX	#172C5C
RGB	rgb(23, 44, 92)
HSL	hsl(222, 60%, 23%)
HSV	hsv(222, 75%, 36%)
CMYK	cmyk(75%, 52.2%, 0%, 63.9%)
CIE-LAB	lab(19.04, 10.17, -31.27)
CIE-LCH	lch(19.04, 32.88, 288.02°)
OKLab	oklab(30.56% -0.0094 -0.0897)
OKLCH	oklch(30.56% 0.09 264)
XYZ	xyz(3.1851, 2.7559, 10.4872)
Luminance	0.0276 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C5C #5C4717

analogous

#174F5C #172C5C #24175C

triadic

#172C5C #5C172C #2C5C17

tetradic

#172C5C #5C174F #5C4717 #175C24

square

#172C5C #5C174F #5C4717 #175C24

split-complementary

#172C5C #5C2417 #4F5C17

monochromatic

#060C18 #0B152B #172C5C #23438D #2F5BBE

Accessibility & contrast

On white

13.54

#172C5C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.55

#172C5C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C5C

13.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C5C	#FFFFFF	#000000	##FFFFFF
##172C5C	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)

#12325E

Deuteranopia (green-blind)

#012B5B

Tritanopia (blue-blind)

#00373F

Achromatopsia (no color)

#2E2E2E

Design tokens & code

CSS

--color: #172c5c;
/* rgb */ color: rgb(23, 44, 92);
/* oklch */ color: oklch(30.6% 0.090 264.0);

Tailwind

colors: {
  custom: {
    50: '#5e648a',
    500: '#172c5c',
    950: '#000000',
  },
}

SCSS

$custom: #172c5c;
$custom-light: #5e648a;
$custom-dark: #000000;

JSON

{
  "hex": "#172c5c",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 92
  },
  "hsl": {
    "h": 221.739,
    "s": 60,
    "l": 22.549
  },
  "oklch": {
    "l": 0.30557,
    "c": 0.09017,
    "h": 264
  },
  "luminance": 0.02756
}

Semantic roles & 50–950 ramp

primary

#172C5C

secondary

#93783C

accent

#B345E3

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #172C5C

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

Preview Lab → · Contrast checker → · Palette generator →