#3F7ED7#3F7ED7

#3F7ED7 is a mid, vivid blue. Relative luminance 0.209; OKLCH L 59.6% C 0.151 H 257.5°. Best body text is #000000 at 5.18:1 contrast (WCAG AA passes).

Color values

HEX	#3F7ED7
RGB	rgb(63, 126, 215)
HSL	hsl(215, 66%, 55%)
HSV	hsv(215, 71%, 84%)
CMYK	cmyk(70.7%, 41.4%, 0%, 15.7%)
CIE-LAB	lab(52.82, 9.29, -51.59)
CIE-LCH	lch(52.82, 52.42, 280.21°)
OKLab	oklab(59.58% -0.0327 -0.1473)
OKLCH	oklch(59.58% 0.151 257.5)
XYZ	xyz(21.7720, 20.8824, 67.1601)
Luminance	0.2089 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7ED7 #D7983F

analogous

#3FCAD7 #3F7ED7 #4C3FD7

triadic

#3F7ED7 #D73F7E #7ED73F

tetradic

#3F7ED7 #D73FCA #D7983F #3FD74C

square

#3F7ED7 #D73FCA #D7983F #3FD74C

split-complementary

#3F7ED7 #D74C3F #CAD73F

monochromatic

#1B4581 #2560B3 #3F7ED7 #72A0E2 #A4C2EC

Accessibility & contrast

On white

4.06

#3F7ED7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.18

#3F7ED7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7ED7

5.18:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7ED7	#FFFFFF	#000000	##000000
##3F7ED7	1.00	4.06	5.18	5.18
#FFFFFF	4.06	1.00	21.00	21.00
#000000	5.18	21.00	1.00	1.00
##000000	5.18	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5486DA

Deuteranopia (green-blind)

#3A78D5

Tritanopia (blue-blind)

#0093A0

Achromatopsia (no color)

#7E7E7E

Design tokens & code

CSS

--color: #3f7ed7;
/* rgb */ color: rgb(63, 126, 215);
/* oklch */ color: oklch(59.6% 0.151 257.5);

Tailwind

colors: {
  custom: {
    50: '#86a2e4',
    500: '#3f7ed7',
    950: '#000000',
  },
}

SCSS

$custom: #3f7ed7;
$custom-light: #86a2e4;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7ed7",
  "rgb": {
    "r": 63,
    "g": 126,
    "b": 215
  },
  "hsl": {
    "h": 215.132,
    "s": 65.517,
    "l": 54.51
  },
  "oklch": {
    "l": 0.59584,
    "c": 0.15093,
    "h": 257.5
  },
  "luminance": 0.20885
}

Semantic roles & 50–950 ramp

primary

#3F7ED7

secondary

#D9BE99

accent

#A23FE8

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0C0F15

muted

#7D7E84

Preview Lab

Preview with #3F7ED7

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

Preview Lab → · Contrast checker → · Palette generator →