#172C4D#172C4D

#172C4D is a dark, moderate blue. Relative luminance 0.025; OKLCH L 29.4% C 0.066 H 259.1°. Best body text is #FFFFFF at 13.96:1 contrast (WCAG AA passes).

Color values

HEX	#172C4D
RGB	rgb(23, 44, 77)
HSL	hsl(217, 54%, 20%)
HSV	hsv(217, 70%, 30%)
CMYK	cmyk(70.1%, 42.9%, 0%, 69.8%)
CIE-LAB	lab(18.00, 3.95, -22.88)
CIE-LCH	lch(18.00, 23.21, 279.79°)
OKLab	oklab(29.43% -0.0125 -0.065)
OKLCH	oklch(29.43% 0.066 259.1)
XYZ	xyz(2.5931, 2.5191, 7.3693)
Luminance	0.0252 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172C4D #4D3817

analogous

#17474D #172C4D #1D174D

triadic

#172C4D #4D172C #2C4D17

tetradic

#172C4D #4D1747 #4D3817 #174D1D

square

#172C4D #4D1747 #4D3817 #174D1D

split-complementary

#172C4D #4D1D17 #474D17

monochromatic

#070D18 #09111E #172C4D #25477C #3362AB

Accessibility & contrast

On white

13.96

#172C4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.50

#172C4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172C4D

13.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172C4D	#FFFFFF	#000000	##FFFFFF
##172C4D	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)

#1D2F4E

Deuteranopia (green-blind)

#162A4C

Tritanopia (blue-blind)

#003438

Achromatopsia (no color)

#2C2C2C

Design tokens & code

CSS

--color: #172c4d;
/* rgb */ color: rgb(23, 44, 77);
/* oklch */ color: oklch(29.4% 0.066 259.1);

Tailwind

colors: {
  custom: {
    50: '#5a647f',
    500: '#172c4d',
    950: '#000000',
  },
}

SCSS

$custom: #172c4d;
$custom-light: #5a647f;
$custom-dark: #000000;

JSON

{
  "hex": "#172c4d",
  "rgb": {
    "r": 23,
    "g": 44,
    "b": 77
  },
  "hsl": {
    "h": 216.667,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.29427,
    "c": 0.06623,
    "h": 259.1
  },
  "luminance": 0.02519
}

Semantic roles & 50–950 ramp

primary

#172C4D

secondary

#84683C

accent

#A44ADD

background

#F5F5F7

surface

#E9EAEE

border

#C5C6C9

text

#04050A

muted

#79797C

Preview Lab

Preview with #172C4D

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

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