#173E5E#173E5E

#173E5E is a dark, moderate cyan. Relative luminance 0.044; OKLCH L 35.3% C 0.071 H 246.5°. Best body text is #FFFFFF at 11.13:1 contrast (WCAG AA passes).

Color values

HEX	#173E5E
RGB	rgb(23, 62, 94)
HSL	hsl(207, 61%, 23%)
HSV	hsv(207, 76%, 37%)
CMYK	cmyk(75.5%, 34%, 0%, 63.1%)
CIE-LAB	lab(25.06, -1.69, -22.99)
CIE-LCH	lch(25.06, 23.05, 265.79°)
OKLab	oklab(35.28% -0.0283 -0.0651)
OKLCH	oklch(35.28% 0.071 246.5)
XYZ	xyz(4.0956, 4.4351, 11.2277)
Luminance	0.0444 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173E5E #5E3717

analogous

#175E5A #173E5E #171A5E

triadic

#173E5E #5E173E #3E5E17

tetradic

#173E5E #5A175E #5E3717 #1A5E17

square

#173E5E #5A175E #5E3717 #1A5E17

split-complementary

#173E5E #5E171A #5E5A17

monochromatic

#061019 #0B1E2D #173E5E #235E8F #2F7FC0

Accessibility & contrast

On white

11.13

#173E5E on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.89

#173E5E on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173E5E

11.13:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173E5E	#FFFFFF	#000000	##FFFFFF
##173E5E	1.00	11.13	1.89	11.13
#FFFFFF	11.13	1.00	21.00	1.00
#000000	1.89	21.00	1.00	21.00
##FFFFFF	11.13	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#303F5F

Deuteranopia (green-blind)

#26385D

Tritanopia (blue-blind)

#004649

Achromatopsia (no color)

#3B3B3B

Design tokens & code

CSS

--color: #173e5e;
/* rgb */ color: rgb(23, 62, 94);
/* oklch */ color: oklch(35.3% 0.071 246.5);

Tailwind

colors: {
  custom: {
    50: '#5e738c',
    500: '#173e5e',
    950: '#000000',
  },
}

SCSS

$custom: #173e5e;
$custom-light: #5e738c;
$custom-dark: #000000;

JSON

{
  "hex": "#173e5e",
  "rgb": {
    "r": 23,
    "g": 62,
    "b": 94
  },
  "hsl": {
    "h": 207.042,
    "s": 60.684,
    "l": 22.941
  },
  "oklch": {
    "l": 0.35278,
    "c": 0.07101,
    "h": 246.5
  },
  "luminance": 0.04436
}

Semantic roles & 50–950 ramp

primary

#173E5E

secondary

#95643C

accent

#8C44E4

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05080C

muted

#797B7D

Preview Lab

Preview with #173E5E

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

Preview Lab → · Contrast checker → · Palette generator →