#3F49CE#3F49CE

#3F49CE is a mid, highly saturated blue. Relative luminance 0.103; OKLCH L 48.4% C 0.202 H 272.8°. Best body text is #FFFFFF at 6.87:1 contrast (WCAG AA passes).

Color values

HEX	#3F49CE
RGB	rgb(63, 73, 206)
HSL	hsl(236, 59%, 53%)
HSV	hsv(236, 69%, 81%)
CMYK	cmyk(69.4%, 64.6%, 0%, 19.2%)
CIE-LAB	lab(38.33, 39.38, -69.87)
CIE-LCH	lch(38.33, 80.20, 299.40°)
OKLab	oklab(48.44% 0.01 -0.2018)
OKLCH	oklch(48.44% 0.202 272.8)
XYZ	xyz(15.5693, 10.2766, 59.5436)
Luminance	0.1028 (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

#3F49CE #CEC43F

analogous

#3F91CE #3F49CE #7C3FCE

triadic

#3F49CE #CE3F49 #49CE3F

tetradic

#3F49CE #CE3F91 #CEC43F #3FCE7C

square

#3F49CE #CE3F91 #CEC43F #3FCE7C

split-complementary

#3F49CE #CE7C3F #91CE3F

monochromatic

#1E2475 #2A33A6 #3F49CE #7077DA #A1A5E7

Accessibility & contrast

On white

6.87

#3F49CE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.06

#3F49CE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F49CE

6.87:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F49CE	#FFFFFF	#000000	##FFFFFF
##3F49CE	1.00	6.87	3.06	6.87
#FFFFFF	6.87	1.00	21.00	1.00
#000000	3.06	21.00	1.00	21.00
##FFFFFF	6.87	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0061D2

Deuteranopia (green-blind)

#0054CB

Tritanopia (blue-blind)

#006C85

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3f49ce;
/* rgb */ color: rgb(63, 73, 206);
/* oklch */ color: oklch(48.4% 0.202 272.8);

Tailwind

colors: {
  custom: {
    50: '#877cde',
    500: '#3f49ce',
    950: '#000000',
  },
}

SCSS

$custom: #3f49ce;
$custom-light: #877cde;
$custom-dark: #000000;

JSON

{
  "hex": "#3f49ce",
  "rgb": {
    "r": 63,
    "g": 73,
    "b": 206
  },
  "hsl": {
    "h": 235.804,
    "s": 59.336,
    "l": 52.745
  },
  "oklch": {
    "l": 0.48436,
    "c": 0.20205,
    "h": 272.8
  },
  "luminance": 0.10278
}

Semantic roles & 50–950 ramp

primary

#3F49CE

secondary

#D3CF95

accent

#D845E3

background

#F9F7FD

surface

#F1EEFB

border

#CBC9D4

text

#0D0915

muted

#7E7B83

Preview Lab

Preview with #3F49CE

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

Preview Lab → · Contrast checker → · Palette generator →