#173F6D#173F6D

#173F6D is a dark, moderate cyan. Relative luminance 0.048; OKLCH L 36.5% C 0.091 H 254.1°. Best body text is #FFFFFF at 10.67:1 contrast (WCAG AA passes).

Color values

HEX	#173F6D
RGB	rgb(23, 63, 109)
HSL	hsl(212, 65%, 26%)
HSV	hsv(212, 79%, 43%)
CMYK	cmyk(78.9%, 42.2%, 0%, 57.3%)
CIE-LAB	lab(26.28, 3.74, -30.73)
CIE-LCH	lch(26.28, 30.95, 276.94°)
OKLab	oklab(36.52% -0.0249 -0.0877)
OKLCH	oklch(36.52% 0.091 254.1)
XYZ	xyz(4.8901, 4.8407, 15.1417)
Luminance	0.0484 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173F6D #6D4517

analogous

#176A6D #173F6D #1A176D

triadic

#173F6D #6D173F #3F6D17

tetradic

#173F6D #6D176A #6D4517 #176D1A

square

#173F6D #6D176A #6D4517 #176D1A

split-complementary

#173F6D #6D1A17 #6A6D17

monochromatic

#050F19 #0C223A #173F6D #225CA0 #2C79D2

Accessibility & contrast

On white

10.67

#173F6D on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.97

#173F6D on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173F6D

10.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173F6D	#FFFFFF	#000000	##FFFFFF
##173F6D	1.00	10.67	1.97	10.67
#FFFFFF	10.67	1.00	21.00	1.00
#000000	1.97	21.00	1.00	21.00
##FFFFFF	10.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#29426F

Deuteranopia (green-blind)

#1B3B6C

Tritanopia (blue-blind)

#004A50

Achromatopsia (no color)

#3E3E3E

Design tokens & code

CSS

--color: #173f6d;
/* rgb */ color: rgb(23, 63, 109);
/* oklch */ color: oklch(36.5% 0.091 254.1);

Tailwind

colors: {
  custom: {
    50: '#627397',
    500: '#173f6d',
    950: '#000000',
  },
}

SCSS

$custom: #173f6d;
$custom-light: #627397;
$custom-dark: #000000;

JSON

{
  "hex": "#173f6d",
  "rgb": {
    "r": 23,
    "g": 63,
    "b": 109
  },
  "hsl": {
    "h": 212.093,
    "s": 65.152,
    "l": 25.882
  },
  "oklch": {
    "l": 0.36519,
    "c": 0.09121,
    "h": 254.1
  },
  "luminance": 0.04841
}

Semantic roles & 50–950 ramp

primary

#173F6D

secondary

#A3733D

accent

#9A40E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06080D

muted

#7A7B7E

Preview Lab

Preview with #173F6D

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

Preview Lab → · Contrast checker → · Palette generator →