#3659DD#3659DD

#3659DD is a mid, highly saturated blue. Relative luminance 0.131; OKLCH L 52.1% C 0.205 H 267.3°. Best body text is #FFFFFF at 5.79:1 contrast (WCAG AA passes).

Color values

HEX	#3659DD
RGB	rgb(54, 89, 221)
HSL	hsl(227, 71%, 54%)
HSV	hsv(227, 76%, 87%)
CMYK	cmyk(75.6%, 59.7%, 0%, 13.3%)
CIE-LAB	lab(42.98, 33.63, -70.90)
CIE-LCH	lch(42.98, 78.47, 295.38°)
OKLab	oklab(52.13% -0.0097 -0.2048)
OKLCH	oklch(52.13% 0.205 267.3)
XYZ	xyz(18.1403, 13.1475, 69.9743)
Luminance	0.1315 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3659DD #DDBA36

analogous

#36ADDD #3659DD #6736DD

triadic

#3659DD #DD3659 #59DD36

tetradic

#3659DD #DD36AD #DDBA36 #36DD67

square

#3659DD #DD36AD #DDBA36 #36DD67

split-complementary

#3659DD #DD6736 #ADDD36

monochromatic

#162D83 #1F3FB7 #3659DD #6A84E6 #9FAFEF

Accessibility & contrast

On white

5.79

#3659DD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.63

#3659DD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3659DD

5.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3659DD	#FFFFFF	#000000	##FFFFFF
##3659DD	1.00	5.79	3.63	5.79
#FFFFFF	5.79	1.00	21.00	1.00
#000000	3.63	21.00	1.00	21.00
##FFFFFF	5.79	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006EE1

Deuteranopia (green-blind)

#005EDA

Tritanopia (blue-blind)

#007B92

Achromatopsia (no color)

#656565

Design tokens & code

CSS

--color: #3659dd;
/* rgb */ color: rgb(54, 89, 221);
/* oklch */ color: oklch(52.1% 0.205 267.3);

Tailwind

colors: {
  custom: {
    50: '#8587e9',
    500: '#3659dd',
    950: '#000000',
  },
}

SCSS

$custom: #3659dd;
$custom-light: #8587e9;
$custom-dark: #000000;

JSON

{
  "hex": "#3659dd",
  "rgb": {
    "r": 54,
    "g": 89,
    "b": 221
  },
  "hsl": {
    "h": 227.425,
    "s": 71.064,
    "l": 53.922
  },
  "oklch": {
    "l": 0.52129,
    "c": 0.20507,
    "h": 267.3
  },
  "luminance": 0.13149
}

Semantic roles & 50–950 ramp

primary

#3659DD

secondary

#DBCC94

accent

#C83AEE

background

#F9F8FE

surface

#F1EFFD

border

#CBCAD5

text

#0D0B16

muted

#7E7C84

Preview Lab

Preview with #3659DD

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

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