#173D7D#173D7D

#173D7D is a dark, moderate blue. Relative luminance 0.050; OKLCH L 37.2% C 0.117 H 260.2°. Best body text is #FFFFFF at 10.50:1 contrast (WCAG AA passes).

Color values

HEX	#173D7D
RGB	rgb(23, 61, 125)
HSL	hsl(218, 69%, 29%)
HSV	hsv(218, 82%, 49%)
CMYK	cmyk(81.6%, 51.2%, 0%, 51%)
CIE-LAB	lab(26.73, 11.77, -40.13)
CIE-LCH	lch(26.73, 41.82, 286.35°)
OKLab	oklab(37.22% -0.0199 -0.1154)
OKLCH	oklch(37.22% 0.117 260.2)
XYZ	xyz(5.7224, 4.9996, 20.0615)
Luminance	0.0500 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D7D #7D5717

analogous

#17707D #173D7D #24177D

triadic

#173D7D #7D173D #3D7D17

tetradic

#173D7D #7D1770 #7D5717 #177D24

square

#173D7D #7D1770 #7D5717 #177D24

split-complementary

#173D7D #7D2417 #707D17

monochromatic

#050D1A #0D2449 #173D7D #2156B1 #3572DA

Accessibility & contrast

On white

10.50

#173D7D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.00

#173D7D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D7D

10.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D7D	#FFFFFF	#000000	##FFFFFF
##173D7D	1.00	10.50	2.00	10.50
#FFFFFF	10.50	1.00	21.00	1.00
#000000	2.00	21.00	1.00	21.00
##FFFFFF	10.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#17447F

Deuteranopia (green-blind)

#003B7C

Tritanopia (blue-blind)

#004C57

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #173d7d;
/* rgb */ color: rgb(23, 61, 125);
/* oklch */ color: oklch(37.2% 0.117 260.2);

Tailwind

colors: {
  custom: {
    50: '#6671a3',
    500: '#173d7d',
    950: '#000000',
  },
}

SCSS

$custom: #173d7d;
$custom-light: #6671a3;
$custom-dark: #000000;

JSON

{
  "hex": "#173d7d",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 125
  },
  "hsl": {
    "h": 217.647,
    "s": 68.919,
    "l": 29.02
  },
  "oklch": {
    "l": 0.37222,
    "c": 0.11711,
    "h": 260.2
  },
  "luminance": 0.05
}

Semantic roles & 50–950 ramp

primary

#173D7D

secondary

#B2873E

accent

#AA3CEC

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07070F

muted

#7A7A7F

Preview Lab

Preview with #173D7D

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

Preview Lab → · Contrast checker → · Palette generator →