#366DB5#366DB5

#366DB5 is a mid, vivid cyan. Relative luminance 0.151; OKLCH L 53.3% C 0.128 H 256.1°. Best body text is #FFFFFF at 5.23:1 contrast (WCAG AA passes).

Color values

HEX	#366DB5
RGB	rgb(54, 109, 181)
HSL	hsl(214, 54%, 46%)
HSV	hsv(214, 70%, 71%)
CMYK	cmyk(70.2%, 39.8%, 0%, 29%)
CIE-LAB	lab(45.71, 6.16, -43.46)
CIE-LCH	lch(45.71, 43.89, 278.06°)
OKLab	oklab(53.35% -0.0306 -0.1239)
OKLCH	oklch(53.35% 0.128 256.1)
XYZ	xyz(15.3274, 15.0561, 45.8054)
Luminance	0.1506 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366DB5 #B57E36

analogous

#36ACB5 #366DB5 #3E36B5

triadic

#366DB5 #B5366D #6DB536

tetradic

#366DB5 #B536AC #B57E36 #36B53E

square

#366DB5 #B536AC #B57E36 #36B53E

split-complementary

#366DB5 #B53E36 #ACB536

monochromatic

#1A3457 #285186 #366DB5 #5A8CCE #89ADDC

Accessibility & contrast

On white

5.23

#366DB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.01

#366DB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366DB5

5.23:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366DB5	#FFFFFF	#000000	##FFFFFF
##366DB5	1.00	5.23	4.01	5.23
#FFFFFF	5.23	1.00	21.00	1.00
#000000	4.01	21.00	1.00	21.00
##FFFFFF	5.23	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C73B8

Deuteranopia (green-blind)

#3867B4

Tritanopia (blue-blind)

#007E88

Achromatopsia (no color)

#6C6C6C

Design tokens & code

CSS

--color: #366db5;
/* rgb */ color: rgb(54, 109, 181);
/* oklch */ color: oklch(53.3% 0.128 256.1);

Tailwind

colors: {
  custom: {
    50: '#7c96cb',
    500: '#366db5',
    950: '#000000',
  },
}

SCSS

$custom: #366db5;
$custom-light: #7c96cb;
$custom-dark: #000000;

JSON

{
  "hex": "#366db5",
  "rgb": {
    "r": 54,
    "g": 109,
    "b": 181
  },
  "hsl": {
    "h": 214.016,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.53348,
    "c": 0.1276,
    "h": 256.1
  },
  "luminance": 0.15058
}

Semantic roles & 50–950 ramp

primary

#366DB5

secondary

#C6A881

accent

#9E4ADD

background

#F8F9FC

surface

#EFF1F8

border

#CACBD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366DB5

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

Preview Lab → · Contrast checker → · Palette generator →