#3F77D5#3F77D5

#3F77D5 is a mid, vivid blue. Relative luminance 0.191; OKLCH L 57.9% C 0.156 H 260.1°. Best body text is #000000 at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3F77D5
RGB	rgb(63, 119, 213)
HSL	hsl(218, 64%, 54%)
HSV	hsv(218, 70%, 84%)
CMYK	cmyk(70.4%, 44.1%, 0%, 16.5%)
CIE-LAB	lab(50.75, 12.89, -53.77)
CIE-LCH	lch(50.75, 55.30, 283.48°)
OKLab	oklab(57.94% -0.0268 -0.1539)
OKLCH	oklch(57.94% 0.156 260.1)
XYZ	xyz(20.6526, 19.0523, 65.5269)
Luminance	0.1905 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77D5 #D59D3F

analogous

#3FC2D5 #3F77D5 #523FD5

triadic

#3F77D5 #D53F77 #77D53F

tetradic

#3F77D5 #D53FC2 #D59D3F #3FD552

square

#3F77D5 #D53FC2 #D59D3F #3FD552

split-complementary

#3F77D5 #D5523F #C2D53F

monochromatic

#1C407E #275AB0 #3F77D5 #719BE0 #A3BEEB

Accessibility & contrast

On white

4.36

#3F77D5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.81

#3F77D5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F77D5

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77D5	#FFFFFF	#000000	##000000
##3F77D5	1.00	4.36	4.81	4.81
#FFFFFF	4.36	1.00	21.00	21.00
#000000	4.81	21.00	1.00	1.00
##000000	4.81	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4880D9

Deuteranopia (green-blind)

#2C72D3

Tritanopia (blue-blind)

#008D9B

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f77d5;
/* rgb */ color: rgb(63, 119, 213);
/* oklch */ color: oklch(57.9% 0.156 260.1);

Tailwind

colors: {
  custom: {
    50: '#859de2',
    500: '#3f77d5',
    950: '#000000',
  },
}

SCSS

$custom: #3f77d5;
$custom-light: #859de2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77d5",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 213
  },
  "hsl": {
    "h": 217.6,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.57944,
    "c": 0.15617,
    "h": 260.1
  },
  "luminance": 0.19055
}

Semantic roles & 50–950 ramp

primary

#3F77D5

secondary

#D8C098

accent

#A941E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F77D5

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

Preview Lab → · Contrast checker → · Palette generator →