#366BB5#366BB5

#366BB5 is a mid, vivid cyan. Relative luminance 0.146; OKLCH L 52.9% C 0.130 H 257.2°. Best body text is #FFFFFF at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#366BB5
RGB	rgb(54, 107, 181)
HSL	hsl(215, 54%, 46%)
HSV	hsv(215, 70%, 71%)
CMYK	cmyk(70.2%, 40.9%, 0%, 29%)
CIE-LAB	lab(45.13, 7.41, -44.39)
CIE-LCH	lch(45.13, 45.00, 279.48°)
OKLab	oklab(52.9% -0.0287 -0.1266)
OKLCH	oklch(52.9% 0.13 257.2)
XYZ	xyz(15.1165, 14.6343, 45.7351)
Luminance	0.1464 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BB5 #B58036

analogous

#36AAB5 #366BB5 #4036B5

triadic

#366BB5 #B5366B #6BB536

tetradic

#366BB5 #B536AA #B58036 #36B540

square

#366BB5 #B536AA #B58036 #36B540

split-complementary

#366BB5 #B54036 #AAB536

monochromatic

#1A3357 #284F86 #366BB5 #5A8BCE #89ACDC

Accessibility & contrast

On white

5.35

#366BB5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.93

#366BB5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BB5

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BB5	#FFFFFF	#000000	##FFFFFF
##366BB5	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)

#4971B8

Deuteranopia (green-blind)

#3465B3

Tritanopia (blue-blind)

#007C87

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366bb5;
/* rgb */ color: rgb(54, 107, 181);
/* oklch */ color: oklch(52.9% 0.130 257.2);

Tailwind

colors: {
  custom: {
    50: '#7c94cb',
    500: '#366bb5',
    950: '#000000',
  },
}

SCSS

$custom: #366bb5;
$custom-light: #7c94cb;
$custom-dark: #000000;

JSON

{
  "hex": "#366bb5",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 181
  },
  "hsl": {
    "h": 214.961,
    "s": 54.043,
    "l": 46.078
  },
  "oklch": {
    "l": 0.52895,
    "c": 0.12983,
    "h": 257.2
  },
  "luminance": 0.14636
}

Semantic roles & 50–950 ramp

primary

#366BB5

secondary

#C6A981

accent

#A04ADD

background

#F8F9FC

surface

#EFF1F9

border

#CACBD2

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #366BB5

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

Preview Lab → · Contrast checker → · Palette generator →