#366EB4#366EB4

#366EB4 is a mid, vivid cyan. Relative luminance 0.152; OKLCH L 53.5% C 0.125 H 255.3°. Best body text is #FFFFFF at 5.19:1 contrast (WCAG AA passes).

Color values

HEX	#366EB4
RGB	rgb(54, 110, 180)
HSL	hsl(213, 54%, 46%)
HSV	hsv(213, 70%, 71%)
CMYK	cmyk(70%, 38.9%, 0%, 29.4%)
CIE-LAB	lab(45.95, 5.17, -42.50)
CIE-LCH	lch(45.95, 42.82, 276.93°)
OKLab	oklab(53.51% -0.0318 -0.121)
OKLCH	oklch(53.51% 0.125 255.3)
XYZ	xyz(15.3325, 15.2298, 45.3028)
Luminance	0.1523 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EB4 #B47C36

analogous

#36ADB4 #366EB4 #3D36B4

triadic

#366EB4 #B4366E #6EB436

tetradic

#366EB4 #B436AD #B47C36 #36B43D

square

#366EB4 #B436AD #B47C36 #36B43D

split-complementary

#366EB4 #B43D36 #ADB436

monochromatic

#1A3456 #285185 #366EB4 #5A8DCD #89AEDC

Accessibility & contrast

On white

5.19

#366EB4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.05

#366EB4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EB4

5.19:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EB4	#FFFFFF	#000000	##FFFFFF
##366EB4	1.00	5.19	4.05	5.19
#FFFFFF	5.19	1.00	21.00	1.00
#000000	4.05	21.00	1.00	21.00
##FFFFFF	5.19	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E73B7

Deuteranopia (green-blind)

#3B67B3

Tritanopia (blue-blind)

#007E88

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366eb4;
/* rgb */ color: rgb(54, 110, 180);
/* oklch */ color: oklch(53.5% 0.125 255.3);

Tailwind

colors: {
  custom: {
    50: '#7c97cb',
    500: '#366eb4',
    950: '#000000',
  },
}

SCSS

$custom: #366eb4;
$custom-light: #7c97cb;
$custom-dark: #000000;

JSON

{
  "hex": "#366eb4",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 180
  },
  "hsl": {
    "h": 213.333,
    "s": 53.846,
    "l": 45.882
  },
  "oklch": {
    "l": 0.53514,
    "c": 0.12517,
    "h": 255.3
  },
  "luminance": 0.15231
}

Semantic roles & 50–950 ramp

primary

#366EB4

secondary

#C6A780

accent

#9C4BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366EB4

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

Preview Lab → · Contrast checker → · Palette generator →