#3F7BDA#3F7BDA

#3F7BDA is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.1% C 0.158 H 259.3°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BDA
RGB	rgb(63, 123, 218)
HSL	hsl(217, 68%, 55%)
HSV	hsv(217, 71%, 85%)
CMYK	cmyk(71.1%, 43.6%, 0%, 14.5%)
CIE-LAB	lab(52.15, 12.21, -54.35)
CIE-LCH	lch(52.15, 55.70, 282.66°)
OKLab	oklab(59.12% -0.0294 -0.1555)
OKLCH	oklch(59.12% 0.158 259.3)
XYZ	xyz(21.7832, 20.2823, 69.0829)
Luminance	0.2029 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BDA #DA9E3F

analogous

#3FC9DA #3F7BDA #503FDA

triadic

#3F7BDA #DA3F7B #7BDA3F

tetradic

#3F7BDA #DA3FC9 #DA9E3F #3FDA50

square

#3F7BDA #DA3FC9 #DA9E3F #3FDA50

split-complementary

#3F7BDA #DA503F #C9DA3F

monochromatic

#1A4385 #245DB8 #3F7BDA #729EE4 #A6C2EE

Accessibility & contrast

On white

4.15

#3F7BDA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#3F7BDA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BDA

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BDA	#FFFFFF	#000000	##000000
##3F7BDA	1.00	4.15	5.06	5.06
#FFFFFF	4.15	1.00	21.00	21.00
#000000	5.06	21.00	1.00	1.00
##000000	5.06	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C84DE

Deuteranopia (green-blind)

#2F76D8

Tritanopia (blue-blind)

#0091A0

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3f7bda;
/* rgb */ color: rgb(63, 123, 218);
/* oklch */ color: oklch(59.1% 0.158 259.3);

Tailwind

colors: {
  custom: {
    50: '#86a0e6',
    500: '#3f7bda',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bda;
$custom-light: #86a0e6;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bda",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 218
  },
  "hsl": {
    "h": 216.774,
    "s": 67.686,
    "l": 55.098
  },
  "oklch": {
    "l": 0.59124,
    "c": 0.15825,
    "h": 259.3
  },
  "luminance": 0.20285
}

Semantic roles & 50–950 ramp

primary

#3F7BDA

secondary

#DBC29A

accent

#A73DEB

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3F7BDA

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

Preview Lab → · Contrast checker → · Palette generator →