#172B52#172B52

#172B52 is a dark, moderate blue. Relative luminance 0.025; OKLCH L 29.5% C 0.076 H 262.3°. Best body text is #FFFFFF at 13.96:1 contrast (WCAG AA passes).

Color values

HEX	#172B52
RGB	rgb(23, 43, 82)
HSL	hsl(220, 56%, 21%)
HSV	hsv(220, 72%, 32%)
CMYK	cmyk(72%, 47.6%, 0%, 67.8%)
CIE-LAB	lab(18.00, 6.74, -26.25)
CIE-LCH	lch(18.00, 27.10, 284.40°)
OKLab	oklab(29.53% -0.0101 -0.075)
OKLCH	oklch(29.53% 0.076 262.3)
XYZ	xyz(2.7397, 2.5188, 8.3228)
Luminance	0.0252 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172B52 #523E17

analogous

#174852 #172B52 #201752

triadic

#172B52 #52172B #2B5217

tetradic

#172B52 #521748 #523E17 #175220

square

#172B52 #521748 #523E17 #175220

split-complementary

#172B52 #522017 #485217

monochromatic

#070D18 #0A1222 #172B52 #244482 #325DB2

Accessibility & contrast

On white

13.96

#172B52 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#172B52 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172B52

13.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172B52	#FFFFFF	#000000	##FFFFFF
##172B52	1.00	13.96	1.50	13.96
#FFFFFF	13.96	1.00	21.00	1.00
#000000	1.50	21.00	1.00	21.00
##FFFFFF	13.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#192F53

Deuteranopia (green-blind)

#0F2951

Tritanopia (blue-blind)

#00343A

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #172b52;
/* rgb */ color: rgb(23, 43, 82);
/* oklch */ color: oklch(29.5% 0.076 262.3);

Tailwind

colors: {
  custom: {
    50: '#5c6383',
    500: '#172b52',
    950: '#000000',
  },
}

SCSS

$custom: #172b52;
$custom-light: #5c6383;
$custom-dark: #000000;

JSON

{
  "hex": "#172b52",
  "rgb": {
    "r": 23,
    "g": 43,
    "b": 82
  },
  "hsl": {
    "h": 219.661,
    "s": 56.19,
    "l": 20.588
  },
  "oklch": {
    "l": 0.29533,
    "c": 0.07564,
    "h": 262.3
  },
  "luminance": 0.02519
}

Semantic roles & 50–950 ramp

primary

#172B52

secondary

#896F3C

accent

#AC48DF

background

#F5F5F8

surface

#E9EAEF

border

#C5C6CA

text

#04050A

muted

#79797C

Preview Lab

Preview with #172B52

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

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