#366EC8#366EC8

#366EC8 is a mid, vivid blue. Relative luminance 0.161; OKLCH L 54.8% C 0.152 H 259.5°. Best body text is #FFFFFF at 4.97:1 contrast (WCAG AA passes).

Color values

HEX	#366EC8
RGB	rgb(54, 110, 200)
HSL	hsl(217, 57%, 50%)
HSV	hsv(217, 73%, 78%)
CMYK	cmyk(73%, 45%, 0%, 21.6%)
CIE-LAB	lab(47.11, 12.52, -52.20)
CIE-LCH	lch(47.11, 53.68, 283.49°)
OKLab	oklab(54.79% -0.0277 -0.1495)
OKLCH	oklch(54.79% 0.152 259.5)
XYZ	xyz(17.5188, 16.1043, 56.8175)
Luminance	0.1611 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#366EC8 #C89036

analogous

#36B7C8 #366EC8 #4736C8

triadic

#366EC8 #C8366E #6EC836

tetradic

#366EC8 #C836B7 #C89036 #36C847

square

#366EC8 #C836B7 #C89036 #36C847

split-complementary

#366EC8 #C84736 #B7C836

monochromatic

#1C3968 #295398 #366EC8 #6691D6 #96B3E3

Accessibility & contrast

On white

4.97

#366EC8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.22

#366EC8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #366EC8

4.97:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##366EC8	#FFFFFF	#000000	##FFFFFF
##366EC8	1.00	4.97	4.22	4.97
#FFFFFF	4.97	1.00	21.00	1.00
#000000	4.22	21.00	1.00	21.00
##FFFFFF	4.97	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4077CB

Deuteranopia (green-blind)

#2269C6

Tritanopia (blue-blind)

#008391

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #366ec8;
/* rgb */ color: rgb(54, 110, 200);
/* oklch */ color: oklch(54.8% 0.152 259.5);

Tailwind

colors: {
  custom: {
    50: '#8097d9',
    500: '#366ec8',
    950: '#000000',
  },
}

SCSS

$custom: #366ec8;
$custom-light: #8097d9;
$custom-dark: #000000;

JSON

{
  "hex": "#366ec8",
  "rgb": {
    "r": 54,
    "g": 110,
    "b": 200
  },
  "hsl": {
    "h": 216.986,
    "s": 57.48,
    "l": 49.804
  },
  "oklch": {
    "l": 0.54792,
    "c": 0.15208,
    "h": 259.5
  },
  "luminance": 0.16106
}

Semantic roles & 50–950 ramp

primary

#366EC8

secondary

#CEB58C

accent

#A647E1

background

#F8F9FD

surface

#F0F2FA

border

#CBCCD3

text

#0B0D15

muted

#7C7E83

Preview Lab

Preview with #366EC8

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

Preview Lab → · Contrast checker → · Palette generator →