#366FBB#366FBB

#366FBB is a mid, vivid cyan. Relative luminance 0.157; OKLCH L 54.2% C 0.133 H 256.5°. Best body text is #FFFFFF at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#366FBB
RGB	rgb(54, 111, 187)
HSL	hsl(214, 55%, 47%)
HSV	hsv(214, 71%, 73%)
CMYK	cmyk(71.1%, 40.6%, 0%, 26.7%)
CIE-LAB	lab(46.63, 7.10, -45.48)
CIE-LCH	lch(46.63, 46.03, 278.88°)
OKLab	oklab(54.17% -0.0312 -0.1298)
OKLCH	oklch(54.17% 0.133 256.5)
XYZ	xyz(16.1721, 15.7393, 49.1898)
Luminance	0.1574 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FBB #BB8236

analogous

#36B2BB #366FBB #4036BB

triadic

#366FBB #BB366F #6FBB36

tetradic

#366FBB #BB36B2 #BB8236 #36BB40

square

#366FBB #BB36B2 #BB8236 #36BB40

split-complementary

#366FBB #BB4036 #B2BB36

monochromatic

#1B375C #28538C #366FBB #5E8FD0 #8DB0DE

Accessibility & contrast

On white

5.06

#366FBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.15

#366FBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FBB

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FBB	#FFFFFF	#000000	##FFFFFF
##366FBB	1.00	5.06	4.15	5.06
#FFFFFF	5.06	1.00	21.00	1.00
#000000	4.15	21.00	1.00	21.00
##FFFFFF	5.06	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4B75BE

Deuteranopia (green-blind)

#3669B9

Tritanopia (blue-blind)

#00818C

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366fbb;
/* rgb */ color: rgb(54, 111, 187);
/* oklch */ color: oklch(54.2% 0.133 256.5);

Tailwind

colors: {
  custom: {
    50: '#7d97d0',
    500: '#366fbb',
    950: '#000000',
  },
}

SCSS

$custom: #366fbb;
$custom-light: #7d97d0;
$custom-dark: #000000;

JSON

{
  "hex": "#366fbb",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 187
  },
  "hsl": {
    "h": 214.286,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.54173,
    "c": 0.13345,
    "h": 256.5
  },
  "luminance": 0.15741
}

Semantic roles & 50–950 ramp

primary

#366FBB

secondary

#C9AB84

accent

#9F49DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366FBB

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

Preview Lab → · Contrast checker → · Palette generator →