#173366#173366

#173366 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.0% C 0.096 H 261.2°. Best body text is #FFFFFF at 12.34:1 contrast (WCAG AA passes).

Color values

HEX	#173366
RGB	rgb(23, 51, 102)
HSL	hsl(219, 63%, 25%)
HSV	hsv(219, 77%, 40%)
CMYK	cmyk(77.5%, 50%, 0%, 60%)
CIE-LAB	lab(21.98, 9.28, -33.10)
CIE-LCH	lch(21.98, 34.38, 285.65°)
OKLab	oklab(33.04% -0.0147 -0.095)
OKLCH	oklch(33.04% 0.096 261.2)
XYZ	xyz(3.9346, 3.5087, 13.0377)
Luminance	0.0351 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173366 #664A17

analogous

#175B66 #173366 #231766

triadic

#173366 #661733 #336617

tetradic

#173366 #66175B #664A17 #176623

square

#173366 #66175B #664A17 #176623

split-complementary

#173366 #662317 #5B6617

monochromatic

#060C19 #0C1A34 #173366 #224C98 #2E65CA

Accessibility & contrast

On white

12.34

#173366 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#173366 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173366

12.34:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173366	#FFFFFF	#000000	##FFFFFF
##173366	1.00	12.34	1.70	12.34
#FFFFFF	12.34	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.34	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#183868

Deuteranopia (green-blind)

#043165

Tritanopia (blue-blind)

#003F47

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #173366;
/* rgb */ color: rgb(23, 51, 102);
/* oklch */ color: oklch(33.0% 0.096 261.2);

Tailwind

colors: {
  custom: {
    50: '#606a92',
    500: '#173366',
    950: '#000000',
  },
}

SCSS

$custom: #173366;
$custom-light: #606a92;
$custom-dark: #000000;

JSON

{
  "hex": "#173366",
  "rgb": {
    "r": 23,
    "g": 51,
    "b": 102
  },
  "hsl": {
    "h": 218.734,
    "s": 63.2,
    "l": 24.51
  },
  "oklch": {
    "l": 0.3304,
    "c": 0.09608,
    "h": 261.2
  },
  "luminance": 0.03509
}

Semantic roles & 50–950 ramp

primary

#173366

secondary

#9C7A3C

accent

#AC42E6

background

#F6F6F9

surface

#EBEBF1

border

#C6C6CB

text

#05060D

muted

#7A7A7E

Preview Lab

Preview with #173366

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

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