#3737A0#3737A0

#3737A0 is a dark, vivid blue. Relative luminance 0.061; OKLCH L 40.7% C 0.165 H 276.2°. Best body text is #FFFFFF at 9.47:1 contrast (WCAG AA passes).

Color values

HEX	#3737A0
RGB	rgb(55, 55, 160)
HSL	hsl(240, 49%, 42%)
HSV	hsv(240, 66%, 63%)
CMYK	cmyk(65.6%, 65.6%, 0%, 37.3%)
CIE-LAB	lab(29.62, 33.65, -56.95)
CIE-LCH	lch(29.62, 66.14, 300.57°)
OKLab	oklab(40.71% 0.0178 -0.1642)
OKLCH	oklch(40.71% 0.165 276.2)
XYZ	xyz(9.2848, 6.0819, 33.9355)
Luminance	0.0608 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Blue With A Hint Of Purple

#533CC6

ΔE00 6.82

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3737A0 #A0A037

analogous

#376CA0 #3737A0 #6C37A0

triadic

#3737A0 #A03737 #37A037

tetradic

#3737A0 #A0376C #A0A037 #37A06C

square

#3737A0 #A0376C #A0A037 #37A06C

split-complementary

#3737A0 #A06C37 #6CA037

monochromatic

#181845 #272772 #3737A0 #5151C3 #7F7FD3

Accessibility & contrast

On white

9.47

#3737A0 on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.22

#3737A0 on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3737A0

9.47:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3737A0	#FFFFFF	#000000	##FFFFFF
##3737A0	1.00	9.47	2.22	9.47
#FFFFFF	9.47	1.00	21.00	1.00
#000000	2.22	21.00	1.00	21.00
##FFFFFF	9.47	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#004AA3

Deuteranopia (green-blind)

#00419E

Tritanopia (blue-blind)

#005266

Achromatopsia (no color)

#464646

Design tokens & code

CSS

--color: #3737a0;
/* rgb */ color: rgb(55, 55, 160);
/* oklch */ color: oklch(40.7% 0.165 276.2);

Tailwind

colors: {
  custom: {
    50: '#7b6ebd',
    500: '#3737a0',
    950: '#000000',
  },
}

SCSS

$custom: #3737a0;
$custom-light: #7b6ebd;
$custom-dark: #000000;

JSON

{
  "hex": "#3737a0",
  "rgb": {
    "r": 55,
    "g": 55,
    "b": 160
  },
  "hsl": {
    "h": 240,
    "s": 48.837,
    "l": 42.157
  },
  "oklch": {
    "l": 0.40713,
    "c": 0.16518,
    "h": 276.2
  },
  "luminance": 0.06083
}

Semantic roles & 50–950 ramp

primary

#3737A0

secondary

#BCBC77

accent

#D84FD8

background

#F8F6FB

surface

#EFECF7

border

#CAC7D0

text

#0A0712

muted

#7C7A81

Preview Lab

Preview with #3737A0

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

Preview Lab → · Contrast checker → · Palette generator →