#173E82#173E82

#173E82 is a dark, vivid blue. Relative luminance 0.052; OKLCH L 37.9% C 0.123 H 260.7°. Best body text is #FFFFFF at 10.25:1 contrast (WCAG AA passes).

Color values

HEX	#173E82
RGB	rgb(23, 62, 130)
HSL	hsl(218, 70%, 30%)
HSV	hsv(218, 82%, 51%)
CMYK	cmyk(82.3%, 52.3%, 0%, 49%)
CIE-LAB	lab(27.40, 13.14, -42.18)
CIE-LCH	lch(27.40, 44.18, 287.31°)
OKLab	oklab(37.85% -0.0199 -0.1214)
OKLCH	oklch(37.85% 0.123 260.7)
XYZ	xyz(6.1038, 5.2384, 21.8042)
Luminance	0.0524 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E82 #825B17

analogous

#177382 #173E82 #261782

triadic

#173E82 #82173E #3E8217

tetradic

#173E82 #821773 #825B17 #178226

square

#173E82 #821773 #825B17 #178226

split-complementary

#173E82 #822617 #738217

monochromatic

#050C1A #0E254E #173E82 #2057B6 #3873DC

Accessibility & contrast

On white

10.25

#173E82 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.05

#173E82 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E82

10.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E82	#FFFFFF	#000000	##FFFFFF
##173E82	1.00	10.25	2.05	10.25
#FFFFFF	10.25	1.00	21.00	1.00
#000000	2.05	21.00	1.00	21.00
##FFFFFF	10.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#124684

Deuteranopia (green-blind)

#003C81

Tritanopia (blue-blind)

#004E5A

Achromatopsia (no color)

#414141

Design tokens & code

CSS

--color: #173e82;
/* rgb */ color: rgb(23, 62, 130);
/* oklch */ color: oklch(37.9% 0.123 260.7);

Tailwind

colors: {
  custom: {
    50: '#6772a7',
    500: '#173e82',
    950: '#000000',
  },
}

SCSS

$custom: #173e82;
$custom-light: #6772a7;
$custom-dark: #000000;

JSON

{
  "hex": "#173e82",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 130
  },
  "hsl": {
    "h": 218.131,
    "s": 69.935,
    "l": 30
  },
  "oklch": {
    "l": 0.37852,
    "c": 0.12305,
    "h": 260.7
  },
  "luminance": 0.05239
}

Semantic roles & 50–950 ramp

primary

#173E82

secondary

#B68B3E

accent

#AC3BED

background

#F6F6FA

surface

#EBECF4

border

#C6C7CE

text

#07080F

muted

#7A7B7F

Preview Lab

Preview with #173E82

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

Preview Lab → · Contrast checker → · Palette generator →