#173070#173070

#173070 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.2% C 0.115 H 264.7°. Best body text is #FFFFFF at 12.40:1 contrast (WCAG AA passes).

Color values

HEX	#173070
RGB	rgb(23, 48, 112)
HSL	hsl(223, 66%, 26%)
HSV	hsv(223, 79%, 44%)
CMYK	cmyk(79.5%, 57.1%, 0%, 56.1%)
CIE-LAB	lab(21.82, 15.62, -39.82)
CIE-LCH	lch(21.82, 42.77, 291.41°)
OKLab	oklab(33.16% -0.0107 -0.1148)
OKLCH	oklch(33.16% 0.115 264.7)
XYZ	xyz(4.3339, 3.4654, 15.7666)
Luminance	0.0347 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173070 #705717

analogous

#175D70 #173070 #2B1770

triadic

#173070 #701730 #307017

tetradic

#173070 #70175D #705717 #17702B

square

#173070 #70175D #705717 #17702B

split-complementary

#173070 #702B17 #5D7017

monochromatic

#050B19 #0D1A3D #173070 #2146A3 #2D5CD4

Accessibility & contrast

On white

12.40

#173070 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.69

#173070 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173070

12.40:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173070	#FFFFFF	#000000	##FFFFFF
##173070	1.00	12.40	1.69	12.40
#FFFFFF	12.40	1.00	21.00	1.00
#000000	1.69	21.00	1.00	21.00
##FFFFFF	12.40	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003972

Deuteranopia (green-blind)

#00306F

Tritanopia (blue-blind)

#00404B

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #173070;
/* rgb */ color: rgb(23, 48, 112);
/* oklch */ color: oklch(33.2% 0.115 264.7);

Tailwind

colors: {
  custom: {
    50: '#63679a',
    500: '#173070',
    950: '#000000',
  },
}

SCSS

$custom: #173070;
$custom-light: #63679a;
$custom-dark: #000000;

JSON

{
  "hex": "#173070",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 112
  },
  "hsl": {
    "h": 223.146,
    "s": 65.926,
    "l": 26.471
  },
  "oklch": {
    "l": 0.33164,
    "c": 0.11526,
    "h": 264.7
  },
  "luminance": 0.03466
}

Semantic roles & 50–950 ramp

primary

#173070

secondary

#A6883D

accent

#B93FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #173070

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

Preview Lab → · Contrast checker → · Palette generator →