#3655D9#3655D9

#3655D9 is a mid, highly saturated blue. Relative luminance 0.123; OKLCH L 51.1% C 0.205 H 268.0°. Best body text is #FFFFFF at 6.07:1 contrast (WCAG AA passes).

Color values

HEX	#3655D9
RGB	rgb(54, 85, 217)
HSL	hsl(229, 68%, 53%)
HSV	hsv(229, 75%, 85%)
CMYK	cmyk(75.1%, 60.8%, 0%, 14.9%)
CIE-LAB	lab(41.67, 34.72, -70.76)
CIE-LCH	lch(41.67, 78.82, 296.14°)
OKLab	oklab(51.05% -0.0072 -0.2045)
OKLCH	oklch(51.05% 0.205 268)
XYZ	xyz(17.2899, 12.2891, 67.0930)
Luminance	0.1229 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3655D9 #D9BA36

analogous

#36A6D9 #3655D9 #6836D9

triadic

#3655D9 #D93655 #55D936

tetradic

#3655D9 #D936A6 #D9BA36 #36D968

square

#3655D9 #D936A6 #D9BA36 #36D968

split-complementary

#3655D9 #D96836 #A6D936

monochromatic

#182B7D #213DB0 #3655D9 #6981E3 #9DACEC

Accessibility & contrast

On white

6.07

#3655D9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.46

#3655D9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3655D9

6.07:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3655D9	#FFFFFF	#000000	##FFFFFF
##3655D9	1.00	6.07	3.46	6.07
#FFFFFF	6.07	1.00	21.00	1.00
#000000	3.46	21.00	1.00	21.00
##FFFFFF	6.07	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ADD

Deuteranopia (green-blind)

#005BD6

Tritanopia (blue-blind)

#00778F

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3655d9;
/* rgb */ color: rgb(54, 85, 217);
/* oklch */ color: oklch(51.1% 0.205 268.0);

Tailwind

colors: {
  custom: {
    50: '#8584e6',
    500: '#3655d9',
    950: '#000000',
  },
}

SCSS

$custom: #3655d9;
$custom-light: #8584e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3655d9",
  "rgb": {
    "r": 54,
    "g": 85,
    "b": 217
  },
  "hsl": {
    "h": 228.589,
    "s": 68.201,
    "l": 53.137
  },
  "oklch": {
    "l": 0.51054,
    "c": 0.20461,
    "h": 268
  },
  "luminance": 0.12291
}

Semantic roles & 50–950 ramp

primary

#3655D9

secondary

#D9CB92

accent

#CA3DEB

background

#F9F8FE

surface

#F1EFFC

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3655D9

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

Preview Lab → · Contrast checker → · Palette generator →