#173970#173970

#173970 is a dark, moderate blue. Relative luminance 0.043; OKLCH L 35.3% C 0.103 H 259.7°. Best body text is #FFFFFF at 11.32:1 contrast (WCAG AA passes).

Color values

HEX	#173970
RGB	rgb(23, 57, 112)
HSL	hsl(217, 66%, 26%)
HSV	hsv(217, 79%, 44%)
CMYK	cmyk(79.5%, 49.1%, 0%, 56.1%)
CIE-LAB	lab(24.57, 9.18, -35.38)
CIE-LCH	lch(24.57, 36.55, 284.54°)
OKLab	oklab(35.26% -0.0185 -0.1015)
OKLCH	oklch(35.26% 0.103 259.7)
XYZ	xyz(4.7400, 4.2777, 15.9020)
Luminance	0.0428 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173970 #704E17

analogous

#176670 #173970 #221770

triadic

#173970 #701739 #397017

tetradic

#173970 #701766 #704E17 #177022

square

#173970 #701766 #704E17 #177022

split-complementary

#173970 #702217 #667017

monochromatic

#050D19 #0D1F3D #173970 #2153A3 #2D6DD4

Accessibility & contrast

On white

11.32

#173970 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.86

#173970 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173970

11.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173970	#FFFFFF	#000000	##FFFFFF
##173970	1.00	11.32	1.86	11.32
#FFFFFF	11.32	1.00	21.00	1.00
#000000	1.86	21.00	1.00	21.00
##FFFFFF	11.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1B3F72

Deuteranopia (green-blind)

#05376F

Tritanopia (blue-blind)

#00464F

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173970;
/* rgb */ color: rgb(23, 57, 112);
/* oklch */ color: oklch(35.3% 0.103 259.7);

Tailwind

colors: {
  custom: {
    50: '#626e99',
    500: '#173970',
    950: '#000000',
  },
}

SCSS

$custom: #173970;
$custom-light: #626e99;
$custom-dark: #000000;

JSON

{
  "hex": "#173970",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 112
  },
  "hsl": {
    "h": 217.079,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.35262,
    "c": 0.1032,
    "h": 259.7
  },
  "luminance": 0.04278
}

Semantic roles & 50–950 ramp

primary

#173970

secondary

#A67E3D

accent

#A83FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173970

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

Preview Lab → · Contrast checker → · Palette generator →