#173F6F#173F6F

#173F6F is a dark, moderate cyan. Relative luminance 0.049; OKLCH L 36.7% C 0.094 H 254.9°. Best body text is #FFFFFF at 10.62:1 contrast (WCAG AA passes).

Color values

HEX	#173F6F
RGB	rgb(23, 63, 111)
HSL	hsl(213, 66%, 26%)
HSV	hsv(213, 79%, 44%)
CMYK	cmyk(79.3%, 43.2%, 0%, 56.5%)
CIE-LAB	lab(26.40, 4.57, -31.80)
CIE-LCH	lch(26.40, 32.13, 278.17°)
OKLab	oklab(36.66% -0.0244 -0.0909)
OKLCH	oklch(36.66% 0.094 254.9)
XYZ	xyz(4.9990, 4.8843, 15.7151)
Luminance	0.0488 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F6F #6F4717

analogous

#176B6F #173F6F #1B176F

triadic

#173F6F #6F173F #3F6F17

tetradic

#173F6F #6F176B #6F4717 #176F1B

square

#173F6F #6F176B #6F4717 #176F1B

split-complementary

#173F6F #6F1B17 #6B6F17

monochromatic

#050E19 #0C223C #173F6F #225CA2 #2D79D3

Accessibility & contrast

On white

10.62

#173F6F on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.98

#173F6F on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F6F

10.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F6F	#FFFFFF	#000000	##FFFFFF
##173F6F	1.00	10.62	1.98	10.62
#FFFFFF	10.62	1.00	21.00	1.00
#000000	1.98	21.00	1.00	21.00
##FFFFFF	10.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#284371

Deuteranopia (green-blind)

#193B6E

Tritanopia (blue-blind)

#004A51

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #173f6f;
/* rgb */ color: rgb(23, 63, 111);
/* oklch */ color: oklch(36.7% 0.094 254.9);

Tailwind

colors: {
  custom: {
    50: '#627398',
    500: '#173f6f',
    950: '#000000',
  },
}

SCSS

$custom: #173f6f;
$custom-light: #627398;
$custom-dark: #000000;

JSON

{
  "hex": "#173f6f",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 111
  },
  "hsl": {
    "h": 212.727,
    "s": 65.672,
    "l": 26.275
  },
  "oklch": {
    "l": 0.36659,
    "c": 0.09412,
    "h": 254.9
  },
  "luminance": 0.04885
}

Semantic roles & 50–950 ramp

primary

#173F6F

secondary

#A5763D

accent

#9C3FE9

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080E

muted

#7A7B7E

Preview Lab

Preview with #173F6F

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

Preview Lab → · Contrast checker → · Palette generator →