#3F54EA#3F54EA

#3F54EA is a mid, highly saturated blue. Relative luminance 0.133; OKLCH L 52.8% C 0.225 H 270.3°. Best body text is #FFFFFF at 5.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F54EA
RGB	rgb(63, 84, 234)
HSL	hsl(233, 80%, 58%)
HSV	hsv(233, 73%, 92%)
CMYK	cmyk(73.1%, 64.1%, 0%, 8.2%)
CIE-LAB	lab(43.26, 42.27, -77.79)
CIE-LCH	lch(43.26, 88.54, 298.52°)
OKLab	oklab(52.78% 0.0011 -0.2249)
OKLCH	oklch(52.78% 0.225 270.3)
XYZ	xyz(20.0664, 13.3358, 79.3425)
Luminance	0.1334 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F54EA #EAD53F

analogous

#3FA9EA #3F54EA #803FEA

triadic

#3F54EA #EA3F54 #54EA3F

tetradic

#3F54EA #EA3FA9 #EAD53F #3FEA80

square

#3F54EA #EA3FA9 #EAD53F #3FEA80

split-complementary

#3F54EA #EA803F #A9EA3F

monochromatic

#11229D #172ED5 #3F54EA #7685F0 #ADB6F6

Accessibility & contrast

On white

5.73

#3F54EA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#3F54EA on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F54EA

5.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F54EA	#FFFFFF	#000000	##FFFFFF
##3F54EA	1.00	5.73	3.67	5.73
#FFFFFF	5.73	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006EEF

Deuteranopia (green-blind)

#005EE7

Tritanopia (blue-blind)

#007C97

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #3f54ea;
/* rgb */ color: rgb(63, 84, 234);
/* oklch */ color: oklch(52.8% 0.225 270.3);

Tailwind

colors: {
  custom: {
    50: '#8c84f2',
    500: '#3f54ea',
    950: '#000000',
  },
}

SCSS

$custom: #3f54ea;
$custom-light: #8c84f2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f54ea",
  "rgb": {
    "r": 63,
    "g": 84,
    "b": 234
  },
  "hsl": {
    "h": 232.632,
    "s": 80.282,
    "l": 58.235
  },
  "oklch": {
    "l": 0.52778,
    "c": 0.22493,
    "h": 270.3
  },
  "luminance": 0.13338
}

Semantic roles & 50–950 ramp

primary

#3F54EA

secondary

#E4DCA0

accent

#DE31F7

background

#F9F8FE

surface

#F2EFFD

border

#CCCAD5

text

#0E0B17

muted

#7E7C85

Preview Lab

Preview with #3F54EA

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

Preview Lab → · Contrast checker → · Palette generator →