#17638F#17638F

#17638F is a mid, moderate cyan. Relative luminance 0.111; OKLCH L 47.7% C 0.100 H 240.2°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#17638F
RGB	rgb(23, 99, 143)
HSL	hsl(202, 72%, 33%)
HSV	hsv(202, 84%, 56%)
CMYK	cmyk(83.9%, 30.8%, 0%, 43.9%)
CIE-LAB	lab(39.73, -5.98, -30.50)
CIE-LCH	lch(39.73, 31.08, 258.91°)
OKLab	oklab(47.73% -0.0496 -0.0865)
OKLCH	oklch(47.73% 0.1 240.2)
XYZ	xyz(9.7711, 11.0878, 27.6064)
Luminance	0.1109 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#17638F #8F4317

analogous

#178F7F #17638F #17278F

triadic

#17638F #8F1763 #638F17

tetradic

#17638F #7F178F #8F4317 #278F17

square

#17638F #7F178F #8F4317 #278F17

split-complementary

#17638F #8F1727 #8F7F17

monochromatic

#061A26 #0F3F5A #17638F #1F87C4 #40A6E0

Accessibility & contrast

On white

6.53

#17638F on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#17638F on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #17638F

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##17638F	#FFFFFF	#000000	##FFFFFF
##17638F	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E6491

Deuteranopia (green-blind)

#3E598E

Tritanopia (blue-blind)

#006E72

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #17638f;
/* rgb */ color: rgb(23, 99, 143);
/* oklch */ color: oklch(47.7% 0.100 240.2);

Tailwind

colors: {
  custom: {
    50: '#6a8fb0',
    500: '#17638f',
    950: '#000000',
  },
}

SCSS

$custom: #17638f;
$custom-light: #6a8fb0;
$custom-dark: #000000;

JSON

{
  "hex": "#17638f",
  "rgb": {
    "r": 23,
    "g": 99,
    "b": 143
  },
  "hsl": {
    "h": 202,
    "s": 72.289,
    "l": 32.549
  },
  "oklch": {
    "l": 0.47729,
    "c": 0.0997,
    "h": 240.2
  },
  "luminance": 0.11089
}

Semantic roles & 50–950 ramp

primary

#17638F

secondary

#C17041

accent

#7C39EF

background

#F6F8FA

surface

#ECF0F4

border

#C7CBCE

text

#080C10

muted

#7A7D7F

Preview Lab

Preview with #17638F

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

Preview Lab → · Contrast checker → · Palette generator →