#173F67#173F67

#173F67 is a dark, moderate cyan. Relative luminance 0.047; OKLCH L 36.1% C 0.083 H 251.2°. Best body text is #FFFFFF at 10.81:1 contrast (WCAG AA passes).

Color values

HEX	#173F67
RGB	rgb(23, 63, 103)
HSL	hsl(210, 63%, 25%)
HSV	hsv(210, 78%, 40%)
CMYK	cmyk(77.7%, 38.8%, 0%, 59.6%)
CIE-LAB	lab(25.91, 1.28, -27.47)
CIE-LCH	lch(25.91, 27.50, 272.66°)
OKLab	oklab(36.11% -0.0266 -0.0782)
OKLCH	oklch(36.11% 0.083 251.2)
XYZ	xyz(4.5781, 4.7159, 13.4983)
Luminance	0.0472 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F67 #673F17

analogous

#176767 #173F67 #171767

triadic

#173F67 #67173F #3F6717

tetradic

#173F67 #671767 #673F17 #176717

square

#173F67 #671767 #673F17 #176717

split-complementary

#173F67 #671717 #676717

monochromatic

#060F19 #0C2035 #173F67 #225E99 #2D7CCB

Accessibility & contrast

On white

10.81

#173F67 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.94

#173F67 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F67

10.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F67	#FFFFFF	#000000	##FFFFFF
##173F67	1.00	10.81	1.94	10.81
#FFFFFF	10.81	1.00	21.00	1.00
#000000	1.94	21.00	1.00	21.00
##FFFFFF	10.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2D4169

Deuteranopia (green-blind)

#213A66

Tritanopia (blue-blind)

#00484E

Achromatopsia (no color)

#3D3D3D

Design tokens & code

CSS

--color: #173f67;
/* rgb */ color: rgb(23, 63, 103);
/* oklch */ color: oklch(36.1% 0.083 251.2);

Tailwind

colors: {
  custom: {
    50: '#607392',
    500: '#173f67',
    950: '#000000',
  },
}

SCSS

$custom: #173f67;
$custom-light: #607392;
$custom-dark: #000000;

JSON

{
  "hex": "#173f67",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 103
  },
  "hsl": {
    "h": 210,
    "s": 63.492,
    "l": 24.706
  },
  "oklch": {
    "l": 0.36114,
    "c": 0.08257,
    "h": 251.2
  },
  "luminance": 0.04716
}

Semantic roles & 50–950 ramp

primary

#173F67

secondary

#9D6D3D

accent

#9441E7

background

#F6F6F9

surface

#EBECF1

border

#C6C7CB

text

#05080D

muted

#7A7B7E

Preview Lab

Preview with #173F67

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

Preview Lab → · Contrast checker → · Palette generator →