#173071#173071

#173071 is a dark, moderate blue. Relative luminance 0.035; OKLCH L 33.3% C 0.117 H 264.8°. Best body text is #FFFFFF at 12.37:1 contrast (WCAG AA passes).

Color values

HEX	#173071
RGB	rgb(23, 48, 113)
HSL	hsl(223, 66%, 27%)
HSV	hsv(223, 80%, 44%)
CMYK	cmyk(79.6%, 57.5%, 0%, 55.7%)
CIE-LAB	lab(21.90, 16.03, -40.33)
CIE-LCH	lch(21.90, 43.40, 291.68°)
OKLab	oklab(33.25% -0.0106 -0.1163)
OKLCH	oklch(33.25% 0.117 264.8)
XYZ	xyz(4.3899, 3.4878, 16.0614)
Luminance	0.0349 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173071 #715817

analogous

#175D71 #173071 #2B1771

triadic

#173071 #711730 #307117

tetradic

#173071 #71175D #715817 #17712B

square

#173071 #71175D #715817 #17712B

split-complementary

#173071 #712B17 #5D7117

monochromatic

#050B19 #0D1A3E #173071 #2146A4 #2E5CD4

Accessibility & contrast

On white

12.37

#173071 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.70

#173071 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173071

12.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173071	#FFFFFF	#000000	##FFFFFF
##173071	1.00	12.37	1.70	12.37
#FFFFFF	12.37	1.00	21.00	1.00
#000000	1.70	21.00	1.00	21.00
##FFFFFF	12.37	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#003973

Deuteranopia (green-blind)

#003070

Tritanopia (blue-blind)

#00404B

Achromatopsia (no color)

#343434

Design tokens & code

CSS

--color: #173071;
/* rgb */ color: rgb(23, 48, 113);
/* oklch */ color: oklch(33.3% 0.117 264.8);

Tailwind

colors: {
  custom: {
    50: '#63679a',
    500: '#173071',
    950: '#000000',
  },
}

SCSS

$custom: #173071;
$custom-light: #63679a;
$custom-dark: #000000;

JSON

{
  "hex": "#173071",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 113
  },
  "hsl": {
    "h": 223.333,
    "s": 66.176,
    "l": 26.667
  },
  "oklch": {
    "l": 0.33251,
    "c": 0.11675,
    "h": 264.8
  },
  "luminance": 0.03488
}

Semantic roles & 50–950 ramp

primary

#173071

secondary

#A7893D

accent

#BA3FE9

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06060E

muted

#7A7A7E

Preview Lab

Preview with #173071

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

Preview Lab → · Contrast checker → · Palette generator →