#173B61#173B61

#173B61 is a dark, moderate cyan. Relative luminance 0.042; OKLCH L 34.7% C 0.078 H 252.1°. Best body text is #FFFFFF at 11.45:1 contrast (WCAG AA passes).

Color values

HEX	#173B61
RGB	rgb(23, 59, 97)
HSL	hsl(211, 62%, 24%)
HSV	hsv(211, 76%, 38%)
CMYK	cmyk(76.3%, 39.2%, 0%, 62%)
CIE-LAB	lab(24.23, 1.56, -26.25)
CIE-LCH	lch(24.23, 26.29, 273.41°)
OKLab	oklab(34.69% -0.0241 -0.0747)
OKLCH	oklch(34.69% 0.078 252.1)
XYZ	xyz(4.0742, 4.1727, 11.8976)
Luminance	0.0417 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173B61 #613D17

analogous

#176061 #173B61 #181761

triadic

#173B61 #61173B #3B6117

tetradic

#173B61 #611760 #613D17 #176118

square

#173B61 #611760 #613D17 #176118

split-complementary

#173B61 #611817 #606117

monochromatic

#060F19 #0B1D30 #173B61 #235992 #2E77C4

Accessibility & contrast

On white

11.45

#173B61 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.83

#173B61 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173B61

11.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173B61	#FFFFFF	#000000	##FFFFFF
##173B61	1.00	11.45	1.83	11.45
#FFFFFF	11.45	1.00	21.00	1.00
#000000	1.83	21.00	1.00	21.00
##FFFFFF	11.45	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2A3D63

Deuteranopia (green-blind)

#1F3660

Tritanopia (blue-blind)

#004449

Achromatopsia (no color)

#3A3A3A

Design tokens & code

CSS

--color: #173b61;
/* rgb */ color: rgb(23, 59, 97);
/* oklch */ color: oklch(34.7% 0.078 252.1);

Tailwind

colors: {
  custom: {
    50: '#5f708e',
    500: '#173b61',
    950: '#000000',
  },
}

SCSS

$custom: #173b61;
$custom-light: #5f708e;
$custom-dark: #000000;

JSON

{
  "hex": "#173b61",
  "rgb": {
    "r": 23,
    "g": 59,
    "b": 97
  },
  "hsl": {
    "h": 210.811,
    "s": 61.667,
    "l": 23.529
  },
  "oklch": {
    "l": 0.34686,
    "c": 0.07846,
    "h": 252.1
  },
  "luminance": 0.04173
}

Semantic roles & 50–950 ramp

primary

#173B61

secondary

#986B3C

accent

#9643E5

background

#F5F6F8

surface

#EAECF0

border

#C6C7CB

text

#05070C

muted

#797A7D

Preview Lab

Preview with #173B61

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

Preview Lab → · Contrast checker → · Palette generator →