#3F7FDA#3F7FDA

#3F7FDA is a mid, vivid blue. Relative luminance 0.213; OKLCH L 60.0% C 0.154 H 257.6°. Best body text is #000000 at 5.26:1 contrast (WCAG AA passes).

Color values

HEX	#3F7FDA
RGB	rgb(63, 127, 218)
HSL	hsl(215, 68%, 55%)
HSV	hsv(215, 71%, 85%)
CMYK	cmyk(71.1%, 41.7%, 0%, 14.5%)
CIE-LAB	lab(53.27, 9.75, -52.56)
CIE-LCH	lch(53.27, 53.46, 280.51°)
OKLab	oklab(59.99% -0.033 -0.1502)
OKLCH	oklch(59.99% 0.154 257.6)
XYZ	xyz(22.2896, 21.2951, 69.2517)
Luminance	0.2130 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7FDA #DA9A3F

analogous

#3FCCDA #3F7FDA #4C3FDA

triadic

#3F7FDA #DA3F7F #7FDA3F

tetradic

#3F7FDA #DA3FCC #DA9A3F #3FDA4C

square

#3F7FDA #DA3FCC #DA9A3F #3FDA4C

split-complementary

#3F7FDA #DA4C3F #CCDA3F

monochromatic

#1A4685 #2461B8 #3F7FDA #72A1E4 #A6C3EE

Accessibility & contrast

On white

3.99

#3F7FDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.26

#3F7FDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7FDA

5.26:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7FDA	#FFFFFF	#000000	##000000
##3F7FDA	1.00	3.99	5.26	5.26
#FFFFFF	3.99	1.00	21.00	21.00
#000000	5.26	21.00	1.00	1.00
##000000	5.26	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5387DE

Deuteranopia (green-blind)

#3979D8

Tritanopia (blue-blind)

#0094A2

Achromatopsia (no color)

#7F7F7F

Design tokens & code

CSS

--color: #3f7fda;
/* rgb */ color: rgb(63, 127, 218);
/* oklch */ color: oklch(60.0% 0.154 257.6);

Tailwind

colors: {
  custom: {
    50: '#86a3e6',
    500: '#3f7fda',
    950: '#000000',
  },
}

SCSS

$custom: #3f7fda;
$custom-light: #86a3e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7fda",
  "rgb": {
    "r": 63,
    "g": 127,
    "b": 218
  },
  "hsl": {
    "h": 215.226,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.59988,
    "c": 0.15377,
    "h": 257.6
  },
  "luminance": 0.21297
}

Semantic roles & 50–950 ramp

primary

#3F7FDA

secondary

#DBC09A

accent

#A33DEB

background

#F8FAFE

surface

#F0F3FC

border

#CBCDD5

text

#0D0F16

muted

#7D7F84

Preview Lab

Preview with #3F7FDA

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

Preview Lab → · Contrast checker → · Palette generator →