#366EC9#366EC9

#366EC9 is a mid, vivid blue. Relative luminance 0.162; OKLCH L 54.9% C 0.153 H 259.7°. Best body text is #FFFFFF at 4.96:1 contrast (WCAG AA passes).

Color values

HEX	#366EC9
RGB	rgb(54, 110, 201)
HSL	hsl(217, 58%, 50%)
HSV	hsv(217, 73%, 79%)
CMYK	cmyk(73.1%, 45.3%, 0%, 21.2%)
CIE-LAB	lab(47.17, 12.89, -52.68)
CIE-LCH	lch(47.17, 54.23, 283.75°)
OKLab	oklab(54.86% -0.0275 -0.1509)
OKLCH	oklch(54.86% 0.153 259.7)
XYZ	xyz(17.6361, 16.1512, 57.4351)
Luminance	0.1615 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EC9 #C99136

analogous

#36B7C9 #366EC9 #4836C9

triadic

#366EC9 #C9366E #6EC936

tetradic

#366EC9 #C936B7 #C99136 #36C948

square

#366EC9 #C936B7 #C99136 #36C948

split-complementary

#366EC9 #C94836 #B7C936

monochromatic

#1C3969 #295499 #366EC9 #6691D6 #96B4E3

Accessibility & contrast

On white

4.96

#366EC9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.23

#366EC9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EC9

4.96:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EC9	#FFFFFF	#000000	##FFFFFF
##366EC9	1.00	4.96	4.23	4.96
#FFFFFF	4.96	1.00	21.00	1.00
#000000	4.23	21.00	1.00	21.00
##FFFFFF	4.96	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3F77CC

Deuteranopia (green-blind)

#206AC7

Tritanopia (blue-blind)

#008392

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #366ec9;
/* rgb */ color: rgb(54, 110, 201);
/* oklch */ color: oklch(54.9% 0.153 259.7);

Tailwind

colors: {
  custom: {
    50: '#8097da',
    500: '#366ec9',
    950: '#000000',
  },
}

SCSS

$custom: #366ec9;
$custom-light: #8097da;
$custom-dark: #000000;

JSON

{
  "hex": "#366ec9",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 201
  },
  "hsl": {
    "h": 217.143,
    "s": 57.647,
    "l": 50
  },
  "oklch": {
    "l": 0.54859,
    "c": 0.15342,
    "h": 259.7
  },
  "luminance": 0.16153
}

Semantic roles & 50–950 ramp

primary

#366EC9

secondary

#CEB58C

accent

#A647E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #366EC9

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

Preview Lab → · Contrast checker → · Palette generator →