#3F77D4#3F77D4

#3F77D4 is a mid, vivid blue. Relative luminance 0.190; OKLCH L 57.9% C 0.155 H 260.0°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F77D4
RGB	rgb(63, 119, 212)
HSL	hsl(217, 63%, 54%)
HSV	hsv(217, 70%, 83%)
CMYK	cmyk(70.3%, 43.9%, 0%, 16.9%)
CIE-LAB	lab(50.69, 12.53, -53.30)
CIE-LCH	lch(50.69, 54.75, 283.23°)
OKLab	oklab(57.88% -0.027 -0.1525)
OKLCH	oklch(57.88% 0.155 260)
XYZ	xyz(20.5261, 19.0017, 64.8605)
Luminance	0.1900 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77D4 #D49C3F

analogous

#3FC1D4 #3F77D4 #523FD4

triadic

#3F77D4 #D43F77 #77D43F

tetradic

#3F77D4 #D43FC1 #D49C3F #3FD452

square

#3F77D4 #D43FC1 #D49C3F #3FD452

split-complementary

#3F77D4 #D4523F #C1D43F

monochromatic

#1C407D #275AAF #3F77D4 #719ADF #A3BEEA

Accessibility & contrast

On white

4.37

#3F77D4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#3F77D4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F77D4

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77D4	#FFFFFF	#000000	##000000
##3F77D4	1.00	4.37	4.80	4.80
#FFFFFF	4.37	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4980D8

Deuteranopia (green-blind)

#2E72D2

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f77d4;
/* rgb */ color: rgb(63, 119, 212);
/* oklch */ color: oklch(57.9% 0.155 260.0);

Tailwind

colors: {
  custom: {
    50: '#859de2',
    500: '#3f77d4',
    950: '#000000',
  },
}

SCSS

$custom: #3f77d4;
$custom-light: #859de2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77d4",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 212
  },
  "hsl": {
    "h": 217.45,
    "s": 63.404,
    "l": 53.922
  },
  "oklch": {
    "l": 0.57879,
    "c": 0.15484,
    "h": 260
  },
  "luminance": 0.19004
}

Semantic roles & 50–950 ramp

primary

#3F77D4

secondary

#D7BF98

accent

#A841E6

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F77D4

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

Preview Lab → · Contrast checker → · Palette generator →