#3F7CDA#3F7CDA

#3F7CDA is a mid, vivid blue. Relative luminance 0.205; OKLCH L 59.3% C 0.157 H 258.9°. Best body text is #000000 at 5.11:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CDA
RGB	rgb(63, 124, 218)
HSL	hsl(216, 68%, 55%)
HSV	hsv(216, 71%, 85%)
CMYK	cmyk(71.1%, 43.1%, 0%, 14.5%)
CIE-LAB	lab(52.43, 11.60, -53.90)
CIE-LCH	lch(52.43, 55.14, 282.14°)
OKLab	oklab(59.34% -0.0303 -0.1542)
OKLCH	oklch(59.34% 0.157 258.9)
XYZ	xyz(21.9079, 20.5317, 69.1245)
Luminance	0.2053 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CDA #DA9D3F

analogous

#3FCADA #3F7CDA #4F3FDA

triadic

#3F7CDA #DA3F7C #7CDA3F

tetradic

#3F7CDA #DA3FCA #DA9D3F #3FDA4F

square

#3F7CDA #DA3FCA #DA9D3F #3FDA4F

split-complementary

#3F7CDA #DA4F3F #CADA3F

monochromatic

#1A4485 #245EB8 #3F7CDA #729FE4 #A6C2EE

Accessibility & contrast

On white

4.11

#3F7CDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.11

#3F7CDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CDA

5.11:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CDA	#FFFFFF	#000000	##000000
##3F7CDA	1.00	4.11	5.11	5.11
#FFFFFF	4.11	1.00	21.00	21.00
#000000	5.11	21.00	1.00	1.00
##000000	5.11	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E85DE

Deuteranopia (green-blind)

#3276D8

Tritanopia (blue-blind)

#0092A0

Achromatopsia (no color)

#7D7D7D

Design tokens & code

CSS

--color: #3f7cda;
/* rgb */ color: rgb(63, 124, 218);
/* oklch */ color: oklch(59.3% 0.157 258.9);

Tailwind

colors: {
  custom: {
    50: '#86a1e6',
    500: '#3f7cda',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cda;
$custom-light: #86a1e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cda",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 218
  },
  "hsl": {
    "h": 216.387,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.59339,
    "c": 0.15712,
    "h": 258.9
  },
  "luminance": 0.20534
}

Semantic roles & 50–950 ramp

primary

#3F7CDA

secondary

#DBC19A

accent

#A63DEB

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3F7CDA

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

Preview Lab → · Contrast checker → · Palette generator →