#173770#173770

#173770 is a dark, moderate blue. Relative luminance 0.041; OKLCH L 34.8% C 0.106 H 260.9°. Best body text is #FFFFFF at 11.56:1 contrast (WCAG AA passes).

Color values

HEX	#173770
RGB	rgb(23, 55, 112)
HSL	hsl(218, 66%, 26%)
HSV	hsv(218, 79%, 44%)
CMYK	cmyk(79.5%, 50.9%, 0%, 56.1%)
CIE-LAB	lab(23.95, 10.59, -36.38)
CIE-LCH	lch(23.95, 37.89, 286.24°)
OKLab	oklab(34.78% -0.0167 -0.1045)
OKLCH	oklch(34.78% 0.106 260.9)
XYZ	xyz(4.6431, 4.0839, 15.8696)
Luminance	0.0408 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173770 #705017

analogous

#176470 #173770 #241770

triadic

#173770 #701737 #377017

tetradic

#173770 #701764 #705017 #177024

square

#173770 #701764 #705017 #177024

split-complementary

#173770 #702417 #647017

monochromatic

#050C19 #0D1E3D #173770 #2150A3 #2D69D4

Accessibility & contrast

On white

11.56

#173770 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.82

#173770 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173770

11.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173770	#FFFFFF	#000000	##FFFFFF
##173770	1.00	11.56	1.82	11.56
#FFFFFF	11.56	1.00	21.00	1.00
#000000	1.82	21.00	1.00	21.00
##FFFFFF	11.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#173D72

Deuteranopia (green-blind)

#00356F

Tritanopia (blue-blind)

#00454E

Achromatopsia (no color)

#393939

Design tokens & code

CSS

--color: #173770;
/* rgb */ color: rgb(23, 55, 112);
/* oklch */ color: oklch(34.8% 0.106 260.9);

Tailwind

colors: {
  custom: {
    50: '#636d99',
    500: '#173770',
    950: '#000000',
  },
}

SCSS

$custom: #173770;
$custom-light: #636d99;
$custom-dark: #000000;

JSON

{
  "hex": "#173770",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 112
  },
  "hsl": {
    "h": 218.427,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.34784,
    "c": 0.10584,
    "h": 260.9
  },
  "luminance": 0.04084
}

Semantic roles & 50–950 ramp

primary

#173770

secondary

#A6803D

accent

#AC3FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173770

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

Preview Lab → · Contrast checker → · Palette generator →