#366EBB#366EBB

#366EBB is a mid, vivid cyan. Relative luminance 0.155; OKLCH L 53.9% C 0.135 H 257.0°. Best body text is #FFFFFF at 5.12:1 contrast (WCAG AA passes).

Color values

HEX	#366EBB
RGB	rgb(54, 110, 187)
HSL	hsl(215, 55%, 47%)
HSV	hsv(215, 71%, 73%)
CMYK	cmyk(71.1%, 41.2%, 0%, 26.7%)
CIE-LAB	lab(46.34, 7.73, -45.94)
CIE-LCH	lch(46.34, 46.59, 279.55°)
OKLab	oklab(53.95% -0.0302 -0.1311)
OKLCH	oklch(53.95% 0.135 257)
XYZ	xyz(16.0636, 15.5223, 49.1536)
Luminance	0.1552 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EBB #BB8336

analogous

#36B1BB #366EBB #4136BB

triadic

#366EBB #BB366E #6EBB36

tetradic

#366EBB #BB36B1 #BB8336 #36BB41

square

#366EBB #BB36B1 #BB8336 #36BB41

split-complementary

#366EBB #BB4136 #B1BB36

monochromatic

#1B365C #28528C #366EBB #5E8ED0 #8DAFDE

Accessibility & contrast

On white

5.12

#366EBB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.10

#366EBB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EBB

5.12:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EBB	#FFFFFF	#000000	##FFFFFF
##366EBB	1.00	5.12	4.10	5.12
#FFFFFF	5.12	1.00	21.00	1.00
#000000	4.10	21.00	1.00	21.00
##FFFFFF	5.12	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A74BE

Deuteranopia (green-blind)

#3468B9

Tritanopia (blue-blind)

#00808B

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #366ebb;
/* rgb */ color: rgb(54, 110, 187);
/* oklch */ color: oklch(53.9% 0.135 257.0);

Tailwind

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

SCSS

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

JSON

{
  "hex": "#366ebb",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 187
  },
  "hsl": {
    "h": 214.737,
    "s": 55.187,
    "l": 47.255
  },
  "oklch": {
    "l": 0.53948,
    "c": 0.13457,
    "h": 257
  },
  "luminance": 0.15524
}

Semantic roles & 50–950 ramp

primary

#366EBB

secondary

#C9AC84

accent

#A049DF

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #366EBB

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

Preview Lab → · Contrast checker → · Palette generator →