#3688BA#3688BA

#3688BA is a mid, moderate cyan. Relative luminance 0.219; OKLCH L 59.9% C 0.109 H 239.3°. Best body text is #000000 at 5.39:1 contrast (WCAG AA passes).

Color values

HEX	#3688BA
RGB	rgb(54, 136, 186)
HSL	hsl(203, 55%, 47%)
HSV	hsv(203, 71%, 73%)
CMYK	cmyk(71%, 26.9%, 0%, 27.1%)
CIE-LAB	lab(53.96, -8.25, -33.34)
CIE-LCH	lch(53.96, 34.34, 256.11°)
OKLab	oklab(59.91% -0.0559 -0.094)
OKLCH	oklch(59.91% 0.109 239.3)
XYZ	xyz(19.1850, 21.9356, 49.6678)
Luminance	0.2194 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3688BA #BA6836

analogous

#36BAAA #3688BA #3646BA

triadic

#3688BA #BA3688 #88BA36

tetradic

#3688BA #AA36BA #BA6836 #46BA36

square

#3688BA #AA36BA #BA6836 #46BA36

split-complementary

#3688BA #BA3646 #BAAA36

monochromatic

#1A435B #28658B #3688BA #5DA5D0 #8DBFDE

Accessibility & contrast

On white

3.90

#3688BA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.39

#3688BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3688BA

5.39:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3688BA	#FFFFFF	#000000	##000000
##3688BA	1.00	3.90	5.39	5.39
#FFFFFF	3.90	1.00	21.00	21.00
#000000	5.39	21.00	1.00	1.00
##000000	5.39	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7188BC

Deuteranopia (green-blind)

#5F7BB9

Tritanopia (blue-blind)

#009599

Achromatopsia (no color)

#818181

Design tokens & code

CSS

--color: #3688ba;
/* rgb */ color: rgb(54, 136, 186);
/* oklch */ color: oklch(59.9% 0.109 239.3);

Tailwind

colors: {
  custom: {
    50: '#7daacf',
    500: '#3688ba',
    950: '#000000',
  },
}

SCSS

$custom: #3688ba;
$custom-light: #7daacf;
$custom-dark: #000000;

JSON

{
  "hex": "#3688ba",
  "rgb": {
    "r": 54,
    "g": 136,
    "b": 186
  },
  "hsl": {
    "h": 202.727,
    "s": 55,
    "l": 47.059
  },
  "oklch": {
    "l": 0.59913,
    "c": 0.10938,
    "h": 239.3
  },
  "luminance": 0.21938
}

Semantic roles & 50–950 ramp

primary

#3688BA

secondary

#C89E84

accent

#8249DE

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3688BA

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

Preview Lab → · Contrast checker → · Palette generator →