#173055#173055

#173055 is a dark, moderate blue. Relative luminance 0.030; OKLCH L 31.0% C 0.074 H 258.1°. Best body text is #FFFFFF at 13.20:1 contrast (WCAG AA passes).

Color values

HEX	#173055
RGB	rgb(23, 48, 85)
HSL	hsl(216, 57%, 21%)
HSV	hsv(216, 73%, 33%)
CMYK	cmyk(72.9%, 43.5%, 0%, 66.7%)
CIE-LAB	lab(19.85, 4.36, -25.32)
CIE-LCH	lch(19.85, 25.69, 279.76°)
OKLab	oklab(31.03% -0.0151 -0.0721)
OKLCH	oklch(31.03% 0.074 258.1)
XYZ	xyz(3.0494, 2.9516, 9.0016)
Luminance	0.0295 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173055 #553C17

analogous

#174F55 #173055 #1D1755

triadic

#173055 #551730 #305517

tetradic

#173055 #55174F #553C17 #17551D

square

#173055 #55174F #553C17 #17551D

split-complementary

#173055 #551D17 #4F5517

monochromatic

#070E18 #0A1525 #173055 #244B85 #3166B5

Accessibility & contrast

On white

13.20

#173055 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.59

#173055 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173055

13.20:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173055	#FFFFFF	#000000	##FFFFFF
##173055	1.00	13.20	1.59	13.20
#FFFFFF	13.20	1.00	21.00	1.00
#000000	1.59	21.00	1.00	21.00
##FFFFFF	13.20	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1F3356

Deuteranopia (green-blind)

#162D54

Tritanopia (blue-blind)

#00393E

Achromatopsia (no color)

#303030

Design tokens & code

CSS

--color: #173055;
/* rgb */ color: rgb(23, 48, 85);
/* oklch */ color: oklch(31.0% 0.074 258.1);

Tailwind

colors: {
  custom: {
    50: '#5c6785',
    500: '#173055',
    950: '#000000',
  },
}

SCSS

$custom: #173055;
$custom-light: #5c6785;
$custom-dark: #000000;

JSON

{
  "hex": "#173055",
  "rgb": {
    "r": 23,
    "g": 48,
    "b": 85
  },
  "hsl": {
    "h": 215.806,
    "s": 57.407,
    "l": 21.176
  },
  "oklch": {
    "l": 0.31025,
    "c": 0.0737,
    "h": 258.1
  },
  "luminance": 0.02952
}

Semantic roles & 50–950 ramp

primary

#173055

secondary

#8C6C3C

accent

#A347E1

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#04060B

muted

#797A7C

Preview Lab

Preview with #173055

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

Preview Lab → · Contrast checker → · Palette generator →