#366DB4#366DB4

#366DB4 is a mid, vivid cyan. Relative luminance 0.150; OKLCH L 53.3% C 0.126 H 255.9°. Best body text is #FFFFFF at 5.25:1 contrast (WCAG AA passes).

Color values

HEX	#366DB4
RGB	rgb(54, 109, 180)
HSL	hsl(214, 54%, 46%)
HSV	hsv(214, 70%, 71%)
CMYK	cmyk(70%, 39.4%, 0%, 29.4%)
CIE-LAB	lab(45.66, 5.79, -42.97)
CIE-LCH	lch(45.66, 43.36, 277.68°)
OKLab	oklab(53.29% -0.0309 -0.1224)
OKLCH	oklch(53.29% 0.126 255.9)
XYZ	xyz(15.2252, 15.0152, 45.2670)
Luminance	0.1502 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DB4 #B47D36

analogous

#36ACB4 #366DB4 #3E36B4

triadic

#366DB4 #B4366D #6DB436

tetradic

#366DB4 #B436AC #B47D36 #36B43E

square

#366DB4 #B436AC #B47D36 #36B43E

split-complementary

#366DB4 #B43E36 #ACB436

monochromatic

#1A3456 #285085 #366DB4 #5A8CCD #89ADDC

Accessibility & contrast

On white

5.25

#366DB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.00

#366DB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DB4

5.25:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DB4	#FFFFFF	#000000	##FFFFFF
##366DB4	1.00	5.25	4.00	5.25
#FFFFFF	5.25	1.00	21.00	1.00
#000000	4.00	21.00	1.00	21.00
##FFFFFF	5.25	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C72B7

Deuteranopia (green-blind)

#3967B3

Tritanopia (blue-blind)

#007D88

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366db4;
/* rgb */ color: rgb(54, 109, 180);
/* oklch */ color: oklch(53.3% 0.126 255.9);

Tailwind

colors: {
  custom: {
    50: '#7c96cb',
    500: '#366db4',
    950: '#000000',
  },
}

SCSS

$custom: #366db4;
$custom-light: #7c96cb;
$custom-dark: #000000;

JSON

{
  "hex": "#366db4",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 180
  },
  "hsl": {
    "h": 213.81,
    "s": 53.846,
    "l": 45.882
  },
  "oklch": {
    "l": 0.53286,
    "c": 0.12626,
    "h": 255.9
  },
  "luminance": 0.15017
}

Semantic roles & 50–950 ramp

primary

#366DB4

secondary

#C6A780

accent

#9D4BDD

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366DB4

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

Preview Lab → · Contrast checker → · Palette generator →