#3F70CD#3F70CD

#3F70CD is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.9% C 0.154 H 261.8°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F70CD
RGB	rgb(63, 112, 205)
HSL	hsl(219, 59%, 53%)
HSV	hsv(219, 69%, 80%)
CMYK	cmyk(69.3%, 45.4%, 0%, 19.6%)
CIE-LAB	lab(48.32, 14.37, -53.10)
CIE-LCH	lch(48.32, 55.01, 285.14°)
OKLab	oklab(55.92% -0.0218 -0.152)
OKLCH	oklch(55.92% 0.154 261.8)
XYZ	xyz(18.8596, 17.0509, 60.0430)
Luminance	0.1705 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F70CD #CD9C3F

analogous

#3FB7CD #3F70CD #553FCD

triadic

#3F70CD #CD3F70 #70CD3F

tetradic

#3F70CD #CD3FB7 #CD9C3F #3FCD55

square

#3F70CD #CD3FB7 #CD9C3F #3FCD55

split-complementary

#3F70CD #CD553F #B7CD3F

monochromatic

#1E3C74 #2B55A4 #3F70CD #7094DA #A0B8E6

Accessibility & contrast

On white

4.76

#3F70CD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#3F70CD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F70CD

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F70CD	#FFFFFF	#000000	##FFFFFF
##3F70CD	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#417AD1

Deuteranopia (green-blind)

#256DCB

Tritanopia (blue-blind)

#008694

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f70cd;
/* rgb */ color: rgb(63, 112, 205);
/* oklch */ color: oklch(55.9% 0.154 261.8);

Tailwind

colors: {
  custom: {
    50: '#8498dd',
    500: '#3f70cd',
    950: '#000000',
  },
}

SCSS

$custom: #3f70cd;
$custom-light: #8498dd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f70cd",
  "rgb": {
    "r": 63,
    "g": 112,
    "b": 205
  },
  "hsl": {
    "h": 219.296,
    "s": 58.678,
    "l": 52.549
  },
  "oklch": {
    "l": 0.55922,
    "c": 0.15357,
    "h": 261.8
  },
  "luminance": 0.17053
}

Semantic roles & 50–950 ramp

primary

#3F70CD

secondary

#D3BD95

accent

#AC46E2

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F70CD

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

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