#173F76#173F76

#173F76 is a dark, moderate cyan. Relative luminance 0.050; OKLCH L 37.2% C 0.104 H 257.3°. Best body text is #FFFFFF at 10.45:1 contrast (WCAG AA passes).

Color values

HEX	#173F76
RGB	rgb(23, 63, 118)
HSL	hsl(215, 67%, 28%)
HSV	hsv(215, 81%, 46%)
CMYK	cmyk(80.5%, 46.6%, 0%, 53.7%)
CIE-LAB	lab(26.86, 7.47, -35.51)
CIE-LCH	lch(26.86, 36.29, 281.87°)
OKLab	oklab(37.16% -0.0229 -0.1018)
OKLCH	oklch(37.16% 0.104 257.3)
XYZ	xyz(5.3997, 5.0445, 17.8251)
Luminance	0.0505 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F76 #764E17

analogous

#176E76 #173F76 #1F1776

triadic

#173F76 #76173F #3F7617

tetradic

#173F76 #76176E #764E17 #17761F

square

#173F76 #76176E #764E17 #17761F

split-complementary

#173F76 #761F17 #6E7617

monochromatic

#050E1A #0D2443 #173F76 #215AA9 #3177D7

Accessibility & contrast

On white

10.45

#173F76 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.01

#173F76 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F76

10.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F76	#FFFFFF	#000000	##FFFFFF
##173F76	1.00	10.45	2.01	10.45
#FFFFFF	10.45	1.00	21.00	1.00
#000000	2.01	21.00	1.00	21.00
##FFFFFF	10.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#234478

Deuteranopia (green-blind)

#0F3B75

Tritanopia (blue-blind)

#004C54

Achromatopsia (no color)

#3F3F3F

Design tokens & code

CSS

--color: #173f76;
/* rgb */ color: rgb(23, 63, 118);
/* oklch */ color: oklch(37.2% 0.104 257.3);

Tailwind

colors: {
  custom: {
    50: '#64739e',
    500: '#173f76',
    950: '#000000',
  },
}

SCSS

$custom: #173f76;
$custom-light: #64739e;
$custom-dark: #000000;

JSON

{
  "hex": "#173f76",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 118
  },
  "hsl": {
    "h": 214.737,
    "s": 67.376,
    "l": 27.647
  },
  "oklch": {
    "l": 0.37163,
    "c": 0.10433,
    "h": 257.3
  },
  "luminance": 0.05045
}

Semantic roles & 50–950 ramp

primary

#173F76

secondary

#AB7D3E

accent

#A23EEA

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #173F76

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

Preview Lab → · Contrast checker → · Palette generator →