#3680B5#3680B5

#3680B5 is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 57.8% C 0.110 H 243.1°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3680B5
RGB	rgb(54, 128, 181)
HSL	hsl(205, 54%, 46%)
HSV	hsv(205, 70%, 71%)
CMYK	cmyk(70.2%, 29.3%, 0%, 29%)
CIE-LAB	lab(51.33, -5.36, -34.58)
CIE-LCH	lch(51.33, 34.99, 261.19°)
OKLab	oklab(57.76% -0.0495 -0.0977)
OKLCH	oklch(57.76% 0.11 243.1)
XYZ	xyz(17.5778, 19.5569, 46.5556)
Luminance	0.1956 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3680B5 #B56B36

analogous

#36B5AA #3680B5 #3640B5

triadic

#3680B5 #B53680 #80B536

tetradic

#3680B5 #AA36B5 #B56B36 #40B536

square

#3680B5 #AA36B5 #B56B36 #40B536

split-complementary

#3680B5 #B53640 #B5AA36

monochromatic

#1A3D57 #285F86 #3680B5 #5A9ECE #89BADC

Accessibility & contrast

On white

4.28

#3680B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#3680B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3680B5

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3680B5	#FFFFFF	#000000	##000000
##3680B5	1.00	4.28	4.91	4.91
#FFFFFF	4.28	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6881B7

Deuteranopia (green-blind)

#5675B4

Tritanopia (blue-blind)

#008D93

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3680b5;
/* rgb */ color: rgb(54, 128, 181);
/* oklch */ color: oklch(57.8% 0.110 243.1);

Tailwind

colors: {
  custom: {
    50: '#7ca4cb',
    500: '#3680b5',
    950: '#000000',
  },
}

SCSS

$custom: #3680b5;
$custom-light: #7ca4cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3680b5",
  "rgb": {
    "r": 54,
    "g": 128,
    "b": 181
  },
  "hsl": {
    "h": 205.039,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.57758,
    "c": 0.10952,
    "h": 243.1
  },
  "luminance": 0.19559
}

Semantic roles & 50–950 ramp

primary

#3680B5

secondary

#C69E81

accent

#884ADD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3680B5

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

Preview Lab → · Contrast checker → · Palette generator →