#366CB0#366CB0

#366CB0 is a mid, vivid cyan. Relative luminance 0.146; OKLCH L 52.8% C 0.122 H 255.4°. Best body text is #FFFFFF at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#366CB0
RGB	rgb(54, 108, 176)
HSL	hsl(213, 53%, 45%)
HSV	hsv(213, 69%, 69%)
CMYK	cmyk(69.3%, 38.6%, 0%, 31%)
CIE-LAB	lab(45.14, 4.96, -41.45)
CIE-LCH	lch(45.14, 41.75, 276.82°)
OKLab	oklab(52.81% -0.0308 -0.118)
OKLCH	oklch(52.81% 0.122 255.4)
XYZ	xyz(14.7175, 14.6424, 43.1165)
Luminance	0.1464 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366CB0 #B07A36

analogous

#36A9B0 #366CB0 #3D36B0

triadic

#366CB0 #B0366C #6CB036

tetradic

#366CB0 #B036A9 #B07A36 #36B03D

square

#366CB0 #B036A9 #B07A36 #36B03D

split-complementary

#366CB0 #B03D36 #A9B036

monochromatic

#193352 #284F81 #366CB0 #588BCC #86ABDA

Accessibility & contrast

On white

5.35

#366CB0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#366CB0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366CB0

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366CB0	#FFFFFF	#000000	##FFFFFF
##366CB0	1.00	5.35	3.93	5.35
#FFFFFF	5.35	1.00	21.00	1.00
#000000	3.93	21.00	1.00	21.00
##FFFFFF	5.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D71B3

Deuteranopia (green-blind)

#3B66AF

Tritanopia (blue-blind)

#007C85

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366cb0;
/* rgb */ color: rgb(54, 108, 176);
/* oklch */ color: oklch(52.8% 0.122 255.4);

Tailwind

colors: {
  custom: {
    50: '#7b95c8',
    500: '#366cb0',
    950: '#000000',
  },
}

SCSS

$custom: #366cb0;
$custom-light: #7b95c8;
$custom-dark: #000000;

JSON

{
  "hex": "#366cb0",
  "rgb": {
    "r": 54,
    "g": 108,
    "b": 176
  },
  "hsl": {
    "h": 213.443,
    "s": 53.043,
    "l": 45.098
  },
  "oklch": {
    "l": 0.52813,
    "c": 0.12196,
    "h": 255.4
  },
  "luminance": 0.14644
}

Semantic roles & 50–950 ramp

primary

#366CB0

secondary

#C4A57E

accent

#9C4BDC

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #366CB0

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

Preview Lab → · Contrast checker → · Palette generator →