#172D4D#172D4D

#172D4D is a dark, moderate blue. Relative luminance 0.026; OKLCH L 29.7% C 0.065 H 257.8°. Best body text is #FFFFFF at 13.82:1 contrast (WCAG AA passes).

Color values

HEX	#172D4D
RGB	rgb(23, 45, 77)
HSL	hsl(216, 54%, 20%)
HSV	hsv(216, 70%, 30%)
CMYK	cmyk(70.1%, 41.6%, 0%, 69.8%)
CIE-LAB	lab(18.34, 3.23, -22.34)
CIE-LCH	lch(18.34, 22.58, 278.22°)
OKLab	oklab(29.69% -0.0137 -0.0635)
OKLCH	oklch(29.69% 0.065 257.8)
XYZ	xyz(2.6308, 2.5945, 7.3819)
Luminance	0.0260 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#172D4D #4D3717

analogous

#17484D #172D4D #1C174D

triadic

#172D4D #4D172D #2D4D17

tetradic

#172D4D #4D1748 #4D3717 #174D1C

square

#172D4D #4D1748 #4D3717 #174D1C

split-complementary

#172D4D #4D1C17 #484D17

monochromatic

#070E18 #09111E #172D4D #25497C #3364AB

Accessibility & contrast

On white

13.82

#172D4D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.52

#172D4D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #172D4D

13.82:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##172D4D	#FFFFFF	#000000	##FFFFFF
##172D4D	1.00	13.82	1.52	13.82
#FFFFFF	13.82	1.00	21.00	1.00
#000000	1.52	21.00	1.00	21.00
##FFFFFF	13.82	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F2F4E

Deuteranopia (green-blind)

#172A4C

Tritanopia (blue-blind)

#003439

Achromatopsia (no color)

#2D2D2D

Design tokens & code

CSS

--color: #172d4d;
/* rgb */ color: rgb(23, 45, 77);
/* oklch */ color: oklch(29.7% 0.065 257.8);

Tailwind

colors: {
  custom: {
    50: '#5a657f',
    500: '#172d4d',
    950: '#000000',
  },
}

SCSS

$custom: #172d4d;
$custom-light: #5a657f;
$custom-dark: #000000;

JSON

{
  "hex": "#172d4d",
  "rgb": {
    "r": 23,
    "g": 45,
    "b": 77
  },
  "hsl": {
    "h": 215.556,
    "s": 54,
    "l": 19.608
  },
  "oklch": {
    "l": 0.29688,
    "c": 0.06493,
    "h": 257.8
  },
  "luminance": 0.02595
}

Semantic roles & 50–950 ramp

primary

#172D4D

secondary

#84673C

accent

#A24ADD

background

#F5F6F7

surface

#E9EBEE

border

#C5C6C9

text

#04050A

muted

#797A7C

Preview Lab

Preview with #172D4D

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

Preview Lab → · Contrast checker → · Palette generator →