#173F6C#173F6C

#173F6C is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.4% C 0.090 H 253.7°. Best body text is #FFFFFF at 10.69:1 contrast (WCAG AA passes).

Color values

HEX	#173F6C
RGB	rgb(23, 63, 108)
HSL	hsl(212, 65%, 26%)
HSV	hsv(212, 79%, 42%)
CMYK	cmyk(78.7%, 41.7%, 0%, 57.6%)
CIE-LAB	lab(26.21, 3.33, -30.19)
CIE-LCH	lch(26.21, 30.37, 276.29°)
OKLab	oklab(36.45% -0.0252 -0.0861)
OKLCH	oklch(36.45% 0.09 253.7)
XYZ	xyz(4.8366, 4.8193, 14.8598)
Luminance	0.0482 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F6C #6C4417

analogous

#17696C #173F6C #1A176C

triadic

#173F6C #6C173F #3F6C17

tetradic

#173F6C #6C1769 #6C4417 #176C1A

square

#173F6C #6C1769 #6C4417 #176C1A

split-complementary

#173F6C #6C1A17 #696C17

monochromatic

#050F19 #0C223A #173F6C #225C9E #2C7AD1

Accessibility & contrast

On white

10.69

#173F6C on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.96

#173F6C on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F6C

10.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F6C	#FFFFFF	#000000	##FFFFFF
##173F6C	1.00	10.69	1.96	10.69
#FFFFFF	10.69	1.00	21.00	1.00
#000000	1.96	21.00	1.00	21.00
##FFFFFF	10.69	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A426E

Deuteranopia (green-blind)

#1C3A6B

Tritanopia (blue-blind)

#004A50

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #173f6c;
/* rgb */ color: rgb(23, 63, 108);
/* oklch */ color: oklch(36.4% 0.090 253.7);

Tailwind

colors: {
  custom: {
    50: '#617396',
    500: '#173f6c',
    950: '#000000',
  },
}

SCSS

$custom: #173f6c;
$custom-light: #617396;
$custom-dark: #000000;

JSON

{
  "hex": "#173f6c",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 108
  },
  "hsl": {
    "h": 211.765,
    "s": 64.885,
    "l": 25.686
  },
  "oklch": {
    "l": 0.3645,
    "c": 0.08976,
    "h": 253.7
  },
  "luminance": 0.0482
}

Semantic roles & 50–950 ramp

primary

#173F6C

secondary

#A2723D

accent

#9940E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #173F6C

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

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