#3D37BC#3D37BC

#3D37BC is a dark, vivid blue. Relative luminance 0.074; OKLCH L 43.8% C 0.200 H 276.2°. Best body text is #FFFFFF at 8.50:1 contrast (WCAG AA passes).

Color values

HEX	#3D37BC
RGB	rgb(61, 55, 188)
HSL	hsl(243, 55%, 48%)
HSV	hsv(243, 71%, 74%)
CMYK	cmyk(67.6%, 70.7%, 0%, 26.3%)
CIE-LAB	lab(32.60, 43.87, -68.78)
CIE-LCH	lch(32.60, 81.57, 302.53°)
OKLab	oklab(43.76% 0.0217 -0.1987)
OKLCH	oklch(43.76% 0.2 276.2)
XYZ	xyz(12.3648, 7.3542, 48.3351)
Luminance	0.0736 (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

#3D37BC #B6BC37

analogous

#3773BC #3D37BC #8037BC

triadic

#3D37BC #BC3D37 #37BC3D

tetradic

#3D37BC #BC3773 #B6BC37 #37BC80

square

#3D37BC #BC3773 #B6BC37 #37BC80

split-complementary

#3D37BC #BC8037 #73BC37

monochromatic

#1E1B5D #2E298D #3D37BC #6560D0 #938FDE

Accessibility & contrast

On white

8.50

#3D37BC on #FFFFFF

AA ✓AA large ✓AAA ✓

On black

2.47

#3D37BC on #000000

AA ✗AA large ✗AAA ✗

Best text color

#FFFFFF on #3D37BC

8.50:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D37BC	#FFFFFF	#000000	##FFFFFF
##3D37BC	1.00	8.50	2.47	8.50
#FFFFFF	8.50	1.00	21.00	1.00
#000000	2.47	21.00	1.00	21.00
##FFFFFF	8.50	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0052C0

Deuteranopia (green-blind)

#0047BA

Tritanopia (blue-blind)

#005C75

Achromatopsia (no color)

#4D4D4D

Design tokens & code

CSS

--color: #3d37bc;
/* rgb */ color: rgb(61, 55, 188);
/* oklch */ color: oklch(43.8% 0.200 276.2);

Tailwind

colors: {
  custom: {
    50: '#836fd1',
    500: '#3d37bc',
    950: '#000000',
  },
}

SCSS

$custom: #3d37bc;
$custom-light: #836fd1;
$custom-dark: #000000;

JSON

{
  "hex": "#3d37bc",
  "rgb": {
    "r": 61,
    "g": 55,
    "b": 188
  },
  "hsl": {
    "h": 242.707,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.43758,
    "c": 0.19985,
    "h": 276.2
  },
  "luminance": 0.07355
}

Semantic roles & 50–950 ramp

primary

#3D37BC

secondary

#C6C986

accent

#DE4AD7

background

#F8F6FD

surface

#F0ECFA

border

#CBC7D3

text

#0C0714

muted

#7D7A83

Preview Lab

Preview with #3D37BC

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

Preview Lab → · Contrast checker → · Palette generator →