#175B9E#175B9E

#175B9E is a mid, vivid cyan. Relative luminance 0.101; OKLCH L 46.7% C 0.127 H 252.4°. Best body text is #FFFFFF at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#175B9E
RGB	rgb(23, 91, 158)
HSL	hsl(210, 75%, 35%)
HSV	hsv(210, 85%, 62%)
CMYK	cmyk(85.4%, 42.4%, 0%, 38%)
CIE-LAB	lab(38.08, 5.01, -42.12)
CIE-LCH	lch(38.08, 42.42, 276.78°)
OKLab	oklab(46.7% -0.0382 -0.1206)
OKLCH	oklch(46.7% 0.127 252.4)
XYZ	xyz(10.2637, 10.1317, 33.7558)
Luminance	0.1013 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#175B9E #9E5A17

analogous

#179E9D #175B9E #17179E

triadic

#175B9E #9E175B #5B9E17

tetradic

#175B9E #9D179E #9E5A17 #179E17

square

#175B9E #9D179E #9E5A17 #179E17

split-complementary

#175B9E #9E1717 #9E9D17

monochromatic

#071D33 #0F3C69 #175B9E #1F7AD3 #4B98E5

Accessibility & contrast

On white

6.94

#175B9E on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#175B9E on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #175B9E

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##175B9E	#FFFFFF	#000000	##FFFFFF
##175B9E	1.00	6.94	3.03	6.94
#FFFFFF	6.94	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3960A1

Deuteranopia (green-blind)

#21549D

Tritanopia (blue-blind)

#006B75

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #175b9e;
/* rgb */ color: rgb(23, 91, 158);
/* oklch */ color: oklch(46.7% 0.127 252.4);

Tailwind

colors: {
  custom: {
    50: '#6d88bb',
    500: '#175b9e',
    950: '#000000',
  },
}

SCSS

$custom: #175b9e;
$custom-light: #6d88bb;
$custom-dark: #000000;

JSON

{
  "hex": "#175b9e",
  "rgb": {
    "r": 23,
    "g": 91,
    "b": 158
  },
  "hsl": {
    "h": 209.778,
    "s": 74.586,
    "l": 35.49
  },
  "oklch": {
    "l": 0.46704,
    "c": 0.12655,
    "h": 252.4
  },
  "luminance": 0.10133
}

Semantic roles & 50–950 ramp

primary

#175B9E

secondary

#C6884A

accent

#9337F1

background

#F7F8FB

surface

#EDEFF6

border

#C8CAD0

text

#080B12

muted

#7B7C81

Preview Lab

Preview with #175B9E

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

Preview Lab → · Contrast checker → · Palette generator →