#173758#173758

#173758 is a dark, moderate cyan. Relative luminance 0.036; OKLCH L 33.1% C 0.070 H 251.3°. Best body text is #FFFFFF at 12.18:1 contrast (WCAG AA passes).

Color values

HEX	#173758
RGB	rgb(23, 55, 88)
HSL	hsl(210, 59%, 22%)
HSV	hsv(210, 74%, 35%)
CMYK	cmyk(73.9%, 37.5%, 0%, 65.5%)
CIE-LAB	lab(22.37, 0.65, -23.31)
CIE-LCH	lch(22.37, 23.32, 271.60°)
OKLab	oklab(33.05% -0.0223 -0.0661)
OKLCH	oklch(33.05% 0.07 251.3)
XYZ	xyz(3.4803, 3.6188, 9.7457)
Luminance	0.0362 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#173758 #583817

analogous

#175858 #173758 #181758

triadic

#173758 #581737 #375817

tetradic

#173758 #581758 #583817 #175818

square

#173758 #581758 #583817 #175818

split-complementary

#173758 #581817 #585817

monochromatic

#060F18 #0A1927 #173758 #245589 #3074B9

Accessibility & contrast

On white

12.18

#173758 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

1.72

#173758 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #173758

12.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##173758	#FFFFFF	#000000	##FFFFFF
##173758	1.00	12.18	1.72	12.18
#FFFFFF	12.18	1.00	21.00	1.00
#000000	1.72	21.00	1.00	21.00
##FFFFFF	12.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#283959

Deuteranopia (green-blind)

#1F3357

Tritanopia (blue-blind)

#003F43

Achromatopsia (no color)

#353535

Design tokens & code

CSS

--color: #173758;
/* rgb */ color: rgb(23, 55, 88);
/* oklch */ color: oklch(33.1% 0.070 251.3);

Tailwind

colors: {
  custom: {
    50: '#5d6d87',
    500: '#173758',
    950: '#000000',
  },
}

SCSS

$custom: #173758;
$custom-light: #5d6d87;
$custom-dark: #000000;

JSON

{
  "hex": "#173758",
  "rgb": {
    "r": 23,
    "g": 55,
    "b": 88
  },
  "hsl": {
    "h": 210.462,
    "s": 58.559,
    "l": 21.765
  },
  "oklch": {
    "l": 0.33051,
    "c": 0.06982,
    "h": 251.3
  },
  "luminance": 0.03619
}

Semantic roles & 50–950 ramp

primary

#173758

secondary

#8F663C

accent

#9546E2

background

#F5F6F8

surface

#E9EBEF

border

#C5C6CA

text

#05070B

muted

#797A7C

Preview Lab

Preview with #173758

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

Preview Lab → · Contrast checker → · Palette generator →