#3689BB#3689BB

#3689BB is a mid, moderate cyan. Relative luminance 0.223; OKLCH L 60.2% C 0.110 H 239.0°. Best body text is #000000 at 5.45:1 contrast (WCAG AA passes).

Color values

HEX	#3689BB
RGB	rgb(54, 137, 187)
HSL	hsl(203, 55%, 47%)
HSV	hsv(203, 71%, 73%)
CMYK	cmyk(71.1%, 26.7%, 0%, 26.7%)
CIE-LAB	lab(54.30, -8.47, -33.37)
CIE-LCH	lch(54.30, 34.43, 255.75°)
OKLab	oklab(60.2% -0.0566 -0.0941)
OKLCH	oklch(60.2% 0.11 239)
XYZ	xyz(19.4331, 22.2613, 50.2768)
Luminance	0.2226 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3689BB #BB6836

analogous

#36BBAA #3689BB #3647BB

triadic

#3689BB #BB3689 #89BB36

tetradic

#3689BB #AA36BB #BB6836 #47BB36

square

#3689BB #AA36BB #BB6836 #47BB36

split-complementary

#3689BB #BB3647 #BBAA36

monochromatic

#1B435C #28668C #3689BB #5EA5D0 #8DC0DE

Accessibility & contrast

On white

3.85

#3689BB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.45

#3689BB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3689BB

5.45:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3689BB	#FFFFFF	#000000	##000000
##3689BB	1.00	3.85	5.45	5.45
#FFFFFF	3.85	1.00	21.00	21.00
#000000	5.45	21.00	1.00	1.00
##000000	5.45	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7289BD

Deuteranopia (green-blind)

#5F7CBA

Tritanopia (blue-blind)

#00969A

Achromatopsia (no color)

#828282

Design tokens & code

CSS

--color: #3689bb;
/* rgb */ color: rgb(54, 137, 187);
/* oklch */ color: oklch(60.2% 0.110 239.0);

Tailwind

colors: {
  custom: {
    50: '#7dabcf',
    500: '#3689bb',
    950: '#000000',
  },
}

SCSS

$custom: #3689bb;
$custom-light: #7dabcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3689bb",
  "rgb": {
    "r": 54,
    "g": 137,
    "b": 187
  },
  "hsl": {
    "h": 202.556,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.60201,
    "c": 0.1098,
    "h": 239
  },
  "luminance": 0.22263
}

Semantic roles & 50–950 ramp

primary

#3689BB

secondary

#C99E84

accent

#8149DF

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3689BB

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

Preview Lab → · Contrast checker → · Palette generator →