#366FA3#366FA3

#366FA3 is a mid, moderate cyan. Relative luminance 0.148; OKLCH L 52.8% C 0.102 H 248.4°. Best body text is #FFFFFF at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#366FA3
RGB	rgb(54, 111, 163)
HSL	hsl(209, 50%, 43%)
HSV	hsv(209, 67%, 64%)
CMYK	cmyk(66.9%, 31.9%, 0%, 36.1%)
CIE-LAB	lab(45.35, -1.57, -33.49)
CIE-LCH	lch(45.35, 33.53, 267.32°)
OKLab	oklab(52.76% -0.0375 -0.0947)
OKLCH	oklch(52.76% 0.102 248.4)
XYZ	xyz(13.8142, 14.7961, 36.7711)
Luminance	0.1480 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366FA3 #A36A36

analogous

#36A3A0 #366FA3 #3639A3

triadic

#366FA3 #A3366F #6FA336

tetradic

#366FA3 #A036A3 #A36A36 #39A336

square

#366FA3 #A036A3 #A36A36 #39A336

split-complementary

#366FA3 #A33639 #A3A036

monochromatic

#183047 #275075 #366FA3 #518EC5 #7FACD5

Accessibility & contrast

On white

5.30

#366FA3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.96

#366FA3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366FA3

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366FA3	#FFFFFF	#000000	##FFFFFF
##366FA3	1.00	5.30	3.96	5.30
#FFFFFF	5.30	1.00	21.00	1.00
#000000	3.96	21.00	1.00	21.00
##FFFFFF	5.30	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5871A5

Deuteranopia (green-blind)

#4967A2

Tritanopia (blue-blind)

#007B82

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #366fa3;
/* rgb */ color: rgb(54, 111, 163);
/* oklch */ color: oklch(52.8% 0.102 248.4);

Tailwind

colors: {
  custom: {
    50: '#7998be',
    500: '#366fa3',
    950: '#000000',
  },
}

SCSS

$custom: #366fa3;
$custom-light: #7998be;
$custom-dark: #000000;

JSON

{
  "hex": "#366fa3",
  "rgb": {
    "r": 54,
    "g": 111,
    "b": 163
  },
  "hsl": {
    "h": 208.624,
    "s": 50.23,
    "l": 42.549
  },
  "oklch": {
    "l": 0.52758,
    "c": 0.10186,
    "h": 248.4
  },
  "luminance": 0.14797
}

Semantic roles & 50–950 ramp

primary

#366FA3

secondary

#BE9977

accent

#914EDA

background

#F7F9FB

surface

#EEF2F7

border

#C9CCD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366FA3

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

Preview Lab → · Contrast checker → · Palette generator →