#366EB5#366EB5

#366EB5 is a mid, vivid cyan. Relative luminance 0.153; OKLCH L 53.6% C 0.127 H 255.5°. Best body text is #FFFFFF at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#366EB5
RGB	rgb(54, 110, 181)
HSL	hsl(214, 54%, 46%)
HSV	hsv(214, 70%, 71%)
CMYK	cmyk(70.2%, 39.2%, 0%, 29%)
CIE-LAB	lab(46.00, 5.53, -43.00)
CIE-LCH	lch(46.00, 43.35, 277.33°)
OKLab	oklab(53.58% -0.0316 -0.1225)
OKLCH	oklch(53.58% 0.127 255.5)
XYZ	xyz(15.4347, 15.2707, 45.8412)
Luminance	0.1527 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EB5 #B57D36

analogous

#36ADB5 #366EB5 #3D36B5

triadic

#366EB5 #B5366E #6EB536

tetradic

#366EB5 #B536AD #B57D36 #36B53D

square

#366EB5 #B536AD #B57D36 #36B53D

split-complementary

#366EB5 #B53D36 #ADB536

monochromatic

#1A3557 #285186 #366EB5 #5A8DCE #89AEDC

Accessibility & contrast

On white

5.18

#366EB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#366EB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EB5

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EB5	#FFFFFF	#000000	##FFFFFF
##366EB5	1.00	5.18	4.05	5.18
#FFFFFF	5.18	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.18	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D73B8

Deuteranopia (green-blind)

#3A68B4

Tritanopia (blue-blind)

#007F89

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366eb5;
/* rgb */ color: rgb(54, 110, 181);
/* oklch */ color: oklch(53.6% 0.127 255.5);

Tailwind

colors: {
  custom: {
    50: '#7c97cb',
    500: '#366eb5',
    950: '#000000',
  },
}

SCSS

$custom: #366eb5;
$custom-light: #7c97cb;
$custom-dark: #000000;

JSON

{
  "hex": "#366eb5",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 181
  },
  "hsl": {
    "h": 213.543,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.53575,
    "c": 0.12651,
    "h": 255.5
  },
  "luminance": 0.15272
}

Semantic roles & 50–950 ramp

primary

#366EB5

secondary

#C6A781

accent

#9D4ADD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366EB5

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

Preview Lab → · Contrast checker → · Palette generator →