#3F77DA#3F77DA

#3F77DA is a mid, vivid blue. Relative luminance 0.193; OKLCH L 58.3% C 0.163 H 260.8°. Best body text is #000000 at 4.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F77DA
RGB	rgb(63, 119, 218)
HSL	hsl(218, 68%, 55%)
HSV	hsv(218, 71%, 85%)
CMYK	cmyk(71.1%, 45.4%, 0%, 14.5%)
CIE-LAB	lab(51.05, 14.69, -56.12)
CIE-LCH	lch(51.05, 58.01, 284.67°)
OKLab	oklab(58.27% -0.0259 -0.1608)
OKLCH	oklch(58.27% 0.163 260.8)
XYZ	xyz(21.2971, 19.3101, 68.9209)
Luminance	0.1931 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77DA #DAA23F

analogous

#3FC4DA #3F77DA #553FDA

triadic

#3F77DA #DA3F77 #77DA3F

tetradic

#3F77DA #DA3FC4 #DAA23F #3FDA55

square

#3F77DA #DA3FC4 #DAA23F #3FDA55

split-complementary

#3F77DA #DA553F #C4DA3F

monochromatic

#1A4085 #2459B8 #3F77DA #729BE4 #A6C0EE

Accessibility & contrast

On white

4.32

#3F77DA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.86

#3F77DA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F77DA

4.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77DA	#FFFFFF	#000000	##000000
##3F77DA	1.00	4.32	4.86	4.86
#FFFFFF	4.32	1.00	21.00	21.00
#000000	4.86	21.00	1.00	1.00
##000000	4.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4481DE

Deuteranopia (green-blind)

#2373D8

Tritanopia (blue-blind)

#008E9E

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f77da;
/* rgb */ color: rgb(63, 119, 218);
/* oklch */ color: oklch(58.3% 0.163 260.8);

Tailwind

colors: {
  custom: {
    50: '#869de6',
    500: '#3f77da',
    950: '#000000',
  },
}

SCSS

$custom: #3f77da;
$custom-light: #869de6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77da",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 218
  },
  "hsl": {
    "h": 218.323,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.58271,
    "c": 0.16284,
    "h": 260.8
  },
  "luminance": 0.19312
}

Semantic roles & 50–950 ramp

primary

#3F77DA

secondary

#DBC39A

accent

#AC3DEB

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3F77DA

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

Preview Lab → · Contrast checker → · Palette generator →