#172C60#172C60

#172C60 is a dark, moderate blue. Relative luminance 0.028; OKLCH L 30.9% C 0.096 H 264.8°. Best body text is #FFFFFF at 13.41:1 contrast (WCAG AA passes).

Color values

HEX	#172C60
RGB	rgb(23, 44, 96)
HSL	hsl(223, 61%, 23%)
HSV	hsv(223, 76%, 38%)
CMYK	cmyk(76%, 54.2%, 0%, 62.4%)
CIE-LAB	lab(19.34, 11.84, -33.42)
CIE-LCH	lch(19.34, 35.46, 289.51°)
OKLab	oklab(30.88% -0.0088 -0.096)
OKLCH	oklch(30.88% 0.096 264.8)
XYZ	xyz(3.3646, 2.8277, 11.4325)
Luminance	0.0283 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C60 #604B17

analogous

#175060 #172C60 #261760

triadic

#172C60 #60172C #2C6017

tetradic

#172C60 #601750 #604B17 #176026

square

#172C60 #601750 #604B17 #176026

split-complementary

#172C60 #602617 #506017

monochromatic

#060B19 #0B152F #172C60 #234391 #2F59C3

Accessibility & contrast

On white

13.41

#172C60 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.57

#172C60 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C60

13.41:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C60	#FFFFFF	#000000	##FFFFFF
##172C60	1.00	13.41	1.57	13.41
#FFFFFF	13.41	1.00	21.00	1.00
#000000	1.57	21.00	1.00	21.00
##FFFFFF	13.41	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0D3262

Deuteranopia (green-blind)

#002C5F

Tritanopia (blue-blind)

#003841

Achromatopsia (no color)

#2F2F2F

Design tokens & code

CSS

--color: #172c60;
/* rgb */ color: rgb(23, 44, 96);
/* oklch */ color: oklch(30.9% 0.096 264.8);

Tailwind

colors: {
  custom: {
    50: '#5f648e',
    500: '#172c60',
    950: '#000000',
  },
}

SCSS

$custom: #172c60;
$custom-light: #5f648e;
$custom-dark: #000000;

JSON

{
  "hex": "#172c60",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 96
  },
  "hsl": {
    "h": 222.74,
    "s": 61.345,
    "l": 23.333
  },
  "oklch": {
    "l": 0.30883,
    "c": 0.09643,
    "h": 264.8
  },
  "luminance": 0.02828
}

Semantic roles & 50–950 ramp

primary

#172C60

secondary

#977D3C

accent

#B643E4

background

#F5F5F8

surface

#EAEAF0

border

#C6C6CB

text

#05050C

muted

#79797D

Preview Lab

Preview with #172C60

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

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