#366EB2#366EB2

#366EB2 is a mid, vivid cyan. Relative luminance 0.151; OKLCH L 53.4% C 0.122 H 254.7°. Best body text is #FFFFFF at 5.21:1 contrast (WCAG AA passes).

Color values

HEX	#366EB2
RGB	rgb(54, 110, 178)
HSL	hsl(213, 53%, 45%)
HSV	hsv(213, 70%, 70%)
CMYK	cmyk(69.7%, 38.2%, 0%, 30.2%)
CIE-LAB	lab(45.84, 4.44, -41.51)
CIE-LCH	lch(45.84, 41.75, 276.11°)
OKLab	oklab(53.39% -0.0323 -0.1181)
OKLCH	oklch(53.39% 0.122 254.7)
XYZ	xyz(15.1302, 15.1489, 44.2375)
Luminance	0.1515 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EB2 #B27A36

analogous

#36ACB2 #366EB2 #3C36B2

triadic

#366EB2 #B2366E #6EB236

tetradic

#366EB2 #B236AC #B27A36 #36B23C

square

#366EB2 #B236AC #B27A36 #36B23C

split-complementary

#366EB2 #B23C36 #ACB236

monochromatic

#1A3454 #285183 #366EB2 #598DCD #88ADDB

Accessibility & contrast

On white

5.21

#366EB2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.03

#366EB2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EB2

5.21:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EB2	#FFFFFF	#000000	##FFFFFF
##366EB2	1.00	5.21	4.03	5.21
#FFFFFF	5.21	1.00	21.00	1.00
#000000	4.03	21.00	1.00	21.00
##FFFFFF	5.21	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4F73B5

Deuteranopia (green-blind)

#3D67B1

Tritanopia (blue-blind)

#007E87

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #366eb2;
/* rgb */ color: rgb(54, 110, 178);
/* oklch */ color: oklch(53.4% 0.122 254.7);

Tailwind

colors: {
  custom: {
    50: '#7b97c9',
    500: '#366eb2',
    950: '#000000',
  },
}

SCSS

$custom: #366eb2;
$custom-light: #7b97c9;
$custom-dark: #000000;

JSON

{
  "hex": "#366eb2",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 178
  },
  "hsl": {
    "h": 212.903,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.53392,
    "c": 0.12249,
    "h": 254.7
  },
  "luminance": 0.1515
}

Semantic roles & 50–950 ramp

primary

#366EB2

secondary

#C5A57F

accent

#9B4BDD

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #366EB2

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

Preview Lab → · Contrast checker → · Palette generator →