#173E84#173E84

#173E84 is a dark, vivid blue. Relative luminance 0.053; OKLCH L 38.0% C 0.126 H 261.0°. Best body text is #FFFFFF at 10.20:1 contrast (WCAG AA passes).

Color values

HEX	#173E84
RGB	rgb(23, 62, 132)
HSL	hsl(219, 70%, 30%)
HSV	hsv(219, 83%, 52%)
CMYK	cmyk(82.6%, 53%, 0%, 48.2%)
CIE-LAB	lab(27.55, 13.97, -43.18)
CIE-LCH	lch(27.55, 45.39, 287.93°)
OKLab	oklab(38.01% -0.0197 -0.1244)
OKLCH	oklch(38.01% 0.126 261)
XYZ	xyz(6.2393, 5.2926, 22.5181)
Luminance	0.0529 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E84 #845D17

analogous

#177484 #173E84 #261784

triadic

#173E84 #84173E #3E8417

tetradic

#173E84 #841774 #845D17 #178426

square

#173E84 #841774 #845D17 #178426

split-complementary

#173E84 #842617 #748417

monochromatic

#050D1C #0E2650 #173E84 #2056B8 #3973DC

Accessibility & contrast

On white

10.20

#173E84 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.06

#173E84 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E84

10.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E84	#FFFFFF	#000000	##FFFFFF
##173E84	1.00	10.20	2.06	10.20
#FFFFFF	10.20	1.00	21.00	1.00
#000000	2.06	21.00	1.00	21.00
##FFFFFF	10.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0F4687

Deuteranopia (green-blind)

#003C83

Tritanopia (blue-blind)

#004F5B

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #173e84;
/* rgb */ color: rgb(23, 62, 132);
/* oklch */ color: oklch(38.0% 0.126 261.0);

Tailwind

colors: {
  custom: {
    50: '#6772a8',
    500: '#173e84',
    950: '#000000',
  },
}

SCSS

$custom: #173e84;
$custom-light: #6772a8;
$custom-dark: #000000;

JSON

{
  "hex": "#173e84",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 132
  },
  "hsl": {
    "h": 218.532,
    "s": 70.323,
    "l": 30.392
  },
  "oklch": {
    "l": 0.38013,
    "c": 0.12593,
    "h": 261
  },
  "luminance": 0.05293
}

Semantic roles & 50–950 ramp

primary

#173E84

secondary

#B88D3F

accent

#AD3BED

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#070710

muted

#7A7A7F

Preview Lab

Preview with #173E84

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

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