#3638B2#3638B2

#3638B2 is a dark, vivid blue. Relative luminance 0.068; OKLCH L 42.5% C 0.188 H 274.2°. Best body text is #FFFFFF at 8.88:1 contrast (WCAG AA passes).

Color values

HEX	#3638B2
RGB	rgb(54, 56, 178)
HSL	hsl(239, 53%, 45%)
HSV	hsv(239, 70%, 70%)
CMYK	cmyk(69.7%, 68.5%, 0%, 30.2%)
CIE-LAB	lab(31.41, 39.09, -64.83)
CIE-LCH	lch(31.41, 75.70, 301.09°)
OKLab	oklab(42.49% 0.0139 -0.1873)
OKLCH	oklch(42.49% 0.188 274.2)
XYZ	xyz(10.9687, 6.8259, 42.8503)
Luminance	0.0683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3638B2 #B2B036

analogous

#3676B2 #3638B2 #7236B2

triadic

#3638B2 #B23638 #38B236

tetradic

#3638B2 #B23676 #B2B036 #36B272

square

#3638B2 #B23676 #B2B036 #36B272

split-complementary

#3638B2 #B27236 #76B236

monochromatic

#1A1A54 #282983 #3638B2 #595BCD #8889DB

Accessibility & contrast

On white

8.88

#3638B2 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.37

#3638B2 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3638B2

8.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3638B2	#FFFFFF	#000000	##FFFFFF
##3638B2	1.00	8.88	2.37	8.88
#FFFFFF	8.88	1.00	21.00	1.00
#000000	2.37	21.00	1.00	21.00
##FFFFFF	8.88	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0050B6

Deuteranopia (green-blind)

#0044B0

Tritanopia (blue-blind)

#005970

Achromatopsia (no color)

#4A4A4A

Design tokens & code

CSS

--color: #3638b2;
/* rgb */ color: rgb(54, 56, 178);
/* oklch */ color: oklch(42.5% 0.188 274.2);

Tailwind

colors: {
  custom: {
    50: '#7e6fca',
    500: '#3638b2',
    950: '#000000',
  },
}

SCSS

$custom: #3638b2;
$custom-light: #7e6fca;
$custom-dark: #000000;

JSON

{
  "hex": "#3638b2",
  "rgb": {
    "r": 54,
    "g": 56,
    "b": 178
  },
  "hsl": {
    "h": 239.032,
    "s": 53.448,
    "l": 45.49
  },
  "oklch": {
    "l": 0.42492,
    "c": 0.18782,
    "h": 274.2
  },
  "luminance": 0.06827
}

Semantic roles & 50–950 ramp

primary

#3638B2

secondary

#C5C47F

accent

#DA4BDD

background

#F8F6FC

surface

#EFECF9

border

#CAC7D2

text

#0B0713

muted

#7C7A82

Preview Lab

Preview with #3638B2

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

Preview Lab → · Contrast checker → · Palette generator →