#3F70D0#3F70D0

#3F70D0 is a mid, vivid blue. Relative luminance 0.172; OKLCH L 56.1% C 0.158 H 262.2°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F70D0
RGB	rgb(63, 112, 208)
HSL	hsl(220, 61%, 53%)
HSV	hsv(220, 70%, 82%)
CMYK	cmyk(69.7%, 46.2%, 0%, 18.4%)
CIE-LAB	lab(48.51, 15.45, -54.52)
CIE-LCH	lch(48.51, 56.67, 285.83°)
OKLab	oklab(56.12% -0.0213 -0.1562)
OKLCH	oklch(56.12% 0.158 262.2)
XYZ	xyz(19.2252, 17.1972, 61.9685)
Luminance	0.1720 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F70D0 #D09F3F

analogous

#3FB8D0 #3F70D0 #563FD0

triadic

#3F70D0 #D03F70 #70D03F

tetradic

#3F70D0 #D03FB8 #D09F3F #3FD056

square

#3F70D0 #D03FB8 #D09F3F #3FD056

split-complementary

#3F70D0 #D0563F #B8D03F

monochromatic

#1D3C77 #2954A9 #3F70D0 #7095DC #A1B9E8

Accessibility & contrast

On white

4.73

#3F70D0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#3F70D0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F70D0

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F70D0	#FFFFFF	#000000	##FFFFFF
##3F70D0	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3E7AD4

Deuteranopia (green-blind)

#1F6DCE

Tritanopia (blue-blind)

#008696

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3f70d0;
/* rgb */ color: rgb(63, 112, 208);
/* oklch */ color: oklch(56.1% 0.158 262.2);

Tailwind

colors: {
  custom: {
    50: '#8598df',
    500: '#3f70d0',
    950: '#000000',
  },
}

SCSS

$custom: #3f70d0;
$custom-light: #8598df;
$custom-dark: #000000;

JSON

{
  "hex": "#3f70d0",
  "rgb": {
    "r": 63,
    "g": 112,
    "b": 208
  },
  "hsl": {
    "h": 219.724,
    "s": 60.669,
    "l": 53.137
  },
  "oklch": {
    "l": 0.56122,
    "c": 0.15763,
    "h": 262.2
  },
  "luminance": 0.17199
}

Semantic roles & 50–950 ramp

primary

#3F70D0

secondary

#D5C096

accent

#AE44E4

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3F70D0

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

Preview Lab → · Contrast checker → · Palette generator →