#173D6B#173D6B

#173D6B is a dark, moderate cyan. Relative luminance 0.046; OKLCH L 35.9% C 0.091 H 255.0°. Best body text is #FFFFFF at 10.96:1 contrast (WCAG AA passes).

Color values

HEX	#173D6B
RGB	rgb(23, 61, 107)
HSL	hsl(213, 65%, 25%)
HSV	hsv(213, 79%, 42%)
CMYK	cmyk(78.5%, 43%, 0%, 58%)
CIE-LAB	lab(25.51, 4.30, -30.68)
CIE-LCH	lch(25.51, 30.98, 277.97°)
OKLab	oklab(35.88% -0.0235 -0.0876)
OKLCH	oklch(35.88% 0.091 255)
XYZ	xyz(4.6750, 4.5807, 14.5448)
Luminance	0.0458 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173D6B #6B4517

analogous

#17676B #173D6B #1B176B

triadic

#173D6B #6B173D #3D6B17

tetradic

#173D6B #6B1767 #6B4517 #176B1B

square

#173D6B #6B1767 #6B4517 #176B1B

split-complementary

#173D6B #6B1B17 #676B17

monochromatic

#050E19 #0C2039 #173D6B #225A9D #2D76D0

Accessibility & contrast

On white

10.96

#173D6B on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.92

#173D6B on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173D6B

10.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173D6B	#FFFFFF	#000000	##FFFFFF
##173D6B	1.00	10.96	1.92	10.96
#FFFFFF	10.96	1.00	21.00	1.00
#000000	1.92	21.00	1.00	21.00
##FFFFFF	10.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#27416D

Deuteranopia (green-blind)

#19396A

Tritanopia (blue-blind)

#00484E

Achromatopsia (no color)

#3C3C3C

Design tokens & code

CSS

--color: #173d6b;
/* rgb */ color: rgb(23, 61, 107);
/* oklch */ color: oklch(35.9% 0.091 255.0);

Tailwind

colors: {
  custom: {
    50: '#617296',
    500: '#173d6b',
    950: '#000000',
  },
}

SCSS

$custom: #173d6b;
$custom-light: #617296;
$custom-dark: #000000;

JSON

{
  "hex": "#173d6b",
  "rgb": {
    "r": 23,
    "g": 61,
    "b": 107
  },
  "hsl": {
    "h": 212.857,
    "s": 64.615,
    "l": 25.49
  },
  "oklch": {
    "l": 0.35878,
    "c": 0.09072,
    "h": 255
  },
  "luminance": 0.04581
}

Semantic roles & 50–950 ramp

primary

#173D6B

secondary

#A1743D

accent

#9C40E8

background

#F6F6F9

surface

#EBECF2

border

#C6C7CC

text

#06070D

muted

#7A7A7E

Preview Lab

Preview with #173D6B

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

Preview Lab → · Contrast checker → · Palette generator →