#3F7ACD#3F7ACD

#3F7ACD is a mid, vivid blue. Relative luminance 0.194; OKLCH L 58.1% C 0.142 H 257.3°. Best body text is #000000 at 4.88:1 contrast (WCAG AA passes).

Color values

HEX	#3F7ACD
RGB	rgb(63, 122, 205)
HSL	hsl(215, 59%, 53%)
HSV	hsv(215, 69%, 80%)
CMYK	cmyk(69.3%, 40.5%, 0%, 19.6%)
CIE-LAB	lab(51.13, 8.16, -48.62)
CIE-LCH	lch(51.13, 49.30, 279.53°)
OKLab	oklab(58.09% -0.0311 -0.1387)
OKLCH	oklch(58.09% 0.142 257.3)
XYZ	xyz(20.0249, 19.3815, 60.4314)
Luminance	0.1938 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7ACD #CD923F

analogous

#3FC1CD #3F7ACD #4B3FCD

triadic

#3F7ACD #CD3F7A #7ACD3F

tetradic

#3F7ACD #CD3FC1 #CD923F #3FCD4B

square

#3F7ACD #CD3FC1 #CD923F #3FCD4B

split-complementary

#3F7ACD #CD4B3F #C1CD3F

monochromatic

#1E4274 #2B5DA4 #3F7ACD #709CDA #A0BDE6

Accessibility & contrast

On white

4.31

#3F7ACD on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.88

#3F7ACD on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7ACD

4.88:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7ACD	#FFFFFF	#000000	##000000
##3F7ACD	1.00	4.31	4.88	4.88
#FFFFFF	4.31	1.00	21.00	21.00
#000000	4.88	21.00	1.00	1.00
##000000	4.88	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5381D0

Deuteranopia (green-blind)

#3D74CB

Tritanopia (blue-blind)

#008D99

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f7acd;
/* rgb */ color: rgb(63, 122, 205);
/* oklch */ color: oklch(58.1% 0.142 257.3);

Tailwind

colors: {
  custom: {
    50: '#849fdd',
    500: '#3f7acd',
    950: '#000000',
  },
}

SCSS

$custom: #3f7acd;
$custom-light: #849fdd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7acd",
  "rgb": {
    "r": 63,
    "g": 122,
    "b": 205
  },
  "hsl": {
    "h": 215.07,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.5809,
    "c": 0.14212,
    "h": 257.3
  },
  "luminance": 0.19384
}

Semantic roles & 50–950 ramp

primary

#3F7ACD

secondary

#D3B995

accent

#A146E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7ACD

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

Preview Lab → · Contrast checker → · Palette generator →