#173977#173977

#173977 is a dark, moderate blue. Relative luminance 0.044; OKLCH L 35.8% C 0.114 H 261.2°. Best body text is #FFFFFF at 11.12:1 contrast (WCAG AA passes).

Color values

HEX	#173977
RGB	rgb(23, 57, 119)
HSL	hsl(219, 68%, 28%)
HSV	hsv(219, 81%, 47%)
CMYK	cmyk(80.7%, 52.1%, 0%, 53.3%)
CIE-LAB	lab(25.07, 12.09, -39.02)
CIE-LCH	lch(25.07, 40.85, 287.22°)
OKLab	oklab(35.81% -0.0174 -0.1122)
OKLCH	oklch(35.81% 0.114 261.2)
XYZ	xyz(5.1450, 4.4397, 18.0350)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173977 #775517

analogous

#176977 #173977 #251777

triadic

#173977 #771739 #397717

tetradic

#173977 #771769 #775517 #177725

square

#173977 #771769 #775517 #177725

split-complementary

#173977 #772517 #697717

monochromatic

#050C1A #0D2044 #173977 #2152AA #316CD7

Accessibility & contrast

On white

11.12

#173977 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#173977 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173977

11.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173977	#FFFFFF	#000000	##FFFFFF
##173977	1.00	11.12	1.89	11.12
#FFFFFF	11.12	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#134079

Deuteranopia (green-blind)

#003776

Tritanopia (blue-blind)

#004852

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173977;
/* rgb */ color: rgb(23, 57, 119);
/* oklch */ color: oklch(35.8% 0.114 261.2);

Tailwind

colors: {
  custom: {
    50: '#646e9f',
    500: '#173977',
    950: '#000000',
  },
}

SCSS

$custom: #173977;
$custom-light: #646e9f;
$custom-dark: #000000;

JSON

{
  "hex": "#173977",
  "rgb": {
    "r": 23,
    "g": 57,
    "b": 119
  },
  "hsl": {
    "h": 218.75,
    "s": 67.606,
    "l": 27.843
  },
  "oklch": {
    "l": 0.35812,
    "c": 0.11357,
    "h": 261.2
  },
  "luminance": 0.0444
}

Semantic roles & 50–950 ramp

primary

#173977

secondary

#AC853E

accent

#AD3DEA

background

#F6F6F9

surface

#EBEBF2

border

#C6C6CC

text

#06070E

muted

#7A7A7E

Preview Lab

Preview with #173977

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

Preview Lab → · Contrast checker → · Palette generator →