#3689B1#3689B1

#3689B1 is a mid, moderate cyan. Relative luminance 0.218; OKLCH L 59.7% C 0.100 H 233.0°. Best body text is #000000 at 5.37:1 contrast (WCAG AA passes).

Color values

HEX	#3689B1
RGB	rgb(54, 137, 177)
HSL	hsl(200, 53%, 45%)
HSV	hsv(200, 69%, 69%)
CMYK	cmyk(69.5%, 22.6%, 0%, 30.6%)
CIE-LAB	lab(53.87, -11.90, -28.33)
CIE-LCH	lch(53.87, 30.73, 247.22°)
OKLab	oklab(59.71% -0.06 -0.0795)
OKLCH	oklch(59.71% 0.1 233)
XYZ	xyz(18.3997, 21.8479, 44.8338)
Luminance	0.2185 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3689B1 #B15E36

analogous

#36B19B #3689B1 #364CB1

triadic

#3689B1 #B13689 #89B136

tetradic

#3689B1 #9B36B1 #B15E36 #4CB136

square

#3689B1 #9B36B1 #B15E36 #4CB136

split-complementary

#3689B1 #B1364C #B19B36

monochromatic

#194053 #286582 #3689B1 #58A6CC #87BFDA

Accessibility & contrast

On white

3.91

#3689B1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.37

#3689B1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3689B1

5.37:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3689B1	#FFFFFF	#000000	##000000
##3689B1	1.00	3.91	5.37	5.37
#FFFFFF	3.91	1.00	21.00	21.00
#000000	5.37	21.00	1.00	1.00
##000000	5.37	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7588B3

Deuteranopia (green-blind)

#647BB0

Tritanopia (blue-blind)

#009496

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3689b1;
/* rgb */ color: rgb(54, 137, 177);
/* oklch */ color: oklch(59.7% 0.100 233.0);

Tailwind

colors: {
  custom: {
    50: '#7cabc8',
    500: '#3689b1',
    950: '#000000',
  },
}

SCSS

$custom: #3689b1;
$custom-light: #7cabc8;
$custom-dark: #000000;

JSON

{
  "hex": "#3689b1",
  "rgb": {
    "r": 54,
    "g": 137,
    "b": 177
  },
  "hsl": {
    "h": 199.512,
    "s": 53.247,
    "l": 45.294
  },
  "oklch": {
    "l": 0.59709,
    "c": 0.09966,
    "h": 233
  },
  "luminance": 0.2185
}

Semantic roles & 50–950 ramp

primary

#3689B1

secondary

#C4957F

accent

#7A4BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3689B1

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

Preview Lab → · Contrast checker → · Palette generator →