#173D76#173D76

#173D76 is a dark, moderate blue. Relative luminance 0.048; OKLCH L 36.7% C 0.107 H 258.6°. Best body text is #FFFFFF at 10.68:1 contrast (WCAG AA passes).

Color values

HEX	#173D76
RGB	rgb(23, 61, 118)
HSL	hsl(216, 67%, 28%)
HSV	hsv(216, 81%, 46%)
CMYK	cmyk(80.5%, 48.3%, 0%, 53.7%)
CIE-LAB	lab(26.24, 8.86, -36.51)
CIE-LCH	lch(26.24, 37.57, 283.64°)
OKLab	oklab(36.68% -0.0211 -0.1048)
OKLCH	oklch(36.68% 0.107 258.6)
XYZ	xyz(5.2909, 4.8270, 17.7889)
Luminance	0.0483 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D76 #765017

analogous

#176C76 #173D76 #201776

triadic

#173D76 #76173D #3D7617

tetradic

#173D76 #76176C #765017 #177620

square

#173D76 #76176C #765017 #177620

split-complementary

#173D76 #762017 #6C7617

monochromatic

#050D1A #0D2343 #173D76 #2157A9 #3173D7

Accessibility & contrast

On white

10.68

#173D76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#173D76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D76

10.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D76	#FFFFFF	#000000	##FFFFFF
##173D76	1.00	10.68	1.97	10.68
#FFFFFF	10.68	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.68	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1E4378

Deuteranopia (green-blind)

#073A75

Tritanopia (blue-blind)

#004B53

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #173d76;
/* rgb */ color: rgb(23, 61, 118);
/* oklch */ color: oklch(36.7% 0.107 258.6);

Tailwind

colors: {
  custom: {
    50: '#64729e',
    500: '#173d76',
    950: '#000000',
  },
}

SCSS

$custom: #173d76;
$custom-light: #64729e;
$custom-dark: #000000;

JSON

{
  "hex": "#173d76",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 118
  },
  "hsl": {
    "h": 216,
    "s": 67.376,
    "l": 27.647
  },
  "oklch": {
    "l": 0.3668,
    "c": 0.10688,
    "h": 258.6
  },
  "luminance": 0.04828
}

Semantic roles & 50–950 ramp

primary

#173D76

secondary

#AB7F3E

accent

#A53EEA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173D76

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

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