#366BA5#366BA5

#366BA5 is a mid, moderate cyan. Relative luminance 0.140; OKLCH L 51.9% C 0.108 H 252.4°. Best body text is #FFFFFF at 5.52:1 contrast (WCAG AA passes).

Color values

HEX	#366BA5
RGB	rgb(54, 107, 165)
HSL	hsl(211, 51%, 43%)
HSV	hsv(211, 67%, 65%)
CMYK	cmyk(67.3%, 35.2%, 0%, 35.3%)
CIE-LAB	lab(44.25, 1.60, -36.40)
CIE-LCH	lch(44.25, 36.44, 272.51°)
OKLab	oklab(51.93% -0.0327 -0.1032)
OKLCH	oklch(51.93% 0.108 252.4)
XYZ	xyz(13.5681, 14.0149, 37.5801)
Luminance	0.1402 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366BA5 #A57036

analogous

#36A3A5 #366BA5 #3836A5

triadic

#366BA5 #A5366B #6BA536

tetradic

#366BA5 #A536A3 #A57036 #36A538

square

#366BA5 #A536A3 #A57036 #36A538

split-complementary

#366BA5 #A53836 #A3A536

monochromatic

#182F49 #274D77 #366BA5 #5289C6 #80A9D5

Accessibility & contrast

On white

5.52

#366BA5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.80

#366BA5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366BA5

5.52:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366BA5	#FFFFFF	#000000	##FFFFFF
##366BA5	1.00	5.52	3.80	5.52
#FFFFFF	5.52	1.00	21.00	1.00
#000000	3.80	21.00	1.00	21.00
##FFFFFF	5.52	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#516EA7

Deuteranopia (green-blind)

#4264A4

Tritanopia (blue-blind)

#007880

Achromatopsia (no color)

#696969

Design tokens & code

CSS

--color: #366ba5;
/* rgb */ color: rgb(54, 107, 165);
/* oklch */ color: oklch(51.9% 0.108 252.4);

Tailwind

colors: {
  custom: {
    50: '#7995c0',
    500: '#366ba5',
    950: '#000000',
  },
}

SCSS

$custom: #366ba5;
$custom-light: #7995c0;
$custom-dark: #000000;

JSON

{
  "hex": "#366ba5",
  "rgb": {
    "r": 54,
    "g": 107,
    "b": 165
  },
  "hsl": {
    "h": 211.351,
    "s": 50.685,
    "l": 42.941
  },
  "oklch": {
    "l": 0.51928,
    "c": 0.10829,
    "h": 252.4
  },
  "luminance": 0.14016
}

Semantic roles & 50–950 ramp

primary

#366BA5

secondary

#BF9D78

accent

#974EDA

background

#F7F9FB

surface

#EEF1F7

border

#C9CBD0

text

#0A0D12

muted

#7C7E81

Preview Lab

Preview with #366BA5

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

Preview Lab → · Contrast checker → · Palette generator →