#3637A5#3637A5

#3637A5 is a dark, vivid blue. Relative luminance 0.062; OKLCH L 41.1% C 0.172 H 275.4°. Best body text is #FFFFFF at 9.35:1 contrast (WCAG AA passes).

Color values

HEX	#3637A5
RGB	rgb(54, 55, 165)
HSL	hsl(239, 51%, 43%)
HSV	hsv(239, 67%, 65%)
CMYK	cmyk(67.3%, 66.7%, 0%, 35.3%)
CIE-LAB	lab(29.99, 35.23, -59.36)
CIE-LCH	lch(29.99, 69.03, 300.69°)
OKLab	oklab(41.1% 0.0161 -0.1713)
OKLCH	oklch(41.1% 0.172 275.4)
XYZ	xyz(9.6768, 6.2324, 36.2830)
Luminance	0.0623 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.30

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3637A5 #A5A436

analogous

#366FA5 #3637A5 #6C36A5

triadic

#3637A5 #A53637 #37A536

tetradic

#3637A5 #A5366F #A5A436 #36A56C

square

#3637A5 #A5366F #A5A436 #36A56C

split-complementary

#3637A5 #A56C36 #6FA536

monochromatic

#181849 #272877 #3637A5 #5253C6 #8081D5

Accessibility & contrast

On white

9.35

#3637A5 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.25

#3637A5 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3637A5

9.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3637A5	#FFFFFF	#000000	##FFFFFF
##3637A5	1.00	9.35	2.25	9.35
#FFFFFF	9.35	1.00	21.00	1.00
#000000	2.25	21.00	1.00	21.00
##FFFFFF	9.35	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004CA8

Deuteranopia (green-blind)

#0042A3

Tritanopia (blue-blind)

#005469

Achromatopsia (no color)

#474747

Design tokens & code

CSS

--color: #3637a5;
/* rgb */ color: rgb(54, 55, 165);
/* oklch */ color: oklch(41.1% 0.172 275.4);

Tailwind

colors: {
  custom: {
    50: '#7b6ec1',
    500: '#3637a5',
    950: '#000000',
  },
}

SCSS

$custom: #3637a5;
$custom-light: #7b6ec1;
$custom-dark: #000000;

JSON

{
  "hex": "#3637a5",
  "rgb": {
    "r": 54,
    "g": 55,
    "b": 165
  },
  "hsl": {
    "h": 239.459,
    "s": 50.685,
    "l": 42.941
  },
  "oklch": {
    "l": 0.41103,
    "c": 0.17207,
    "h": 275.4
  },
  "luminance": 0.06233
}

Semantic roles & 50–950 ramp

primary

#3637A5

secondary

#BFBE78

accent

#D94EDA

background

#F8F6FC

surface

#EFECF8

border

#CAC7D1

text

#0B0712

muted

#7C7A81

Preview Lab

Preview with #3637A5

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

Preview Lab → · Contrast checker → · Palette generator →