#3F7CD5#3F7CD5

#3F7CD5 is a mid, vivid blue. Relative luminance 0.203; OKLCH L 59.0% C 0.151 H 258.0°. Best body text is #000000 at 5.06:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CD5
RGB	rgb(63, 124, 213)
HSL	hsl(216, 64%, 54%)
HSV	hsv(216, 70%, 84%)
CMYK	cmyk(70.4%, 41.8%, 0%, 16.5%)
CIE-LAB	lab(52.15, 9.80, -51.54)
CIE-LCH	lch(52.15, 52.46, 280.77°)
OKLab	oklab(59.02% -0.0313 -0.1472)
OKLCH	oklch(59.02% 0.151 258)
XYZ	xyz(21.2634, 20.2739, 65.7305)
Luminance	0.2028 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CD5 #D5983F

analogous

#3FC7D5 #3F7CD5 #4D3FD5

triadic

#3F7CD5 #D53F7C #7CD53F

tetradic

#3F7CD5 #D53FC7 #D5983F #3FD54D

square

#3F7CD5 #D53FC7 #D5983F #3FD54D

split-complementary

#3F7CD5 #D54D3F #C7D53F

monochromatic

#1C447E #275FB0 #3F7CD5 #719EE0 #A3C1EB

Accessibility & contrast

On white

4.15

#3F7CD5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.06

#3F7CD5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CD5

5.06:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CD5	#FFFFFF	#000000	##000000
##3F7CD5	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)

#5284D8

Deuteranopia (green-blind)

#3876D3

Tritanopia (blue-blind)

#00919E

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3f7cd5;
/* rgb */ color: rgb(63, 124, 213);
/* oklch */ color: oklch(59.0% 0.151 258.0);

Tailwind

colors: {
  custom: {
    50: '#85a1e2',
    500: '#3f7cd5',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cd5;
$custom-light: #85a1e2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cd5",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 213
  },
  "hsl": {
    "h": 215.6,
    "s": 64.103,
    "l": 54.118
  },
  "oklch": {
    "l": 0.59024,
    "c": 0.15051,
    "h": 258
  },
  "luminance": 0.20276
}

Semantic roles & 50–950 ramp

primary

#3F7CD5

secondary

#D8BE98

accent

#A341E7

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7CD5

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

Preview Lab → · Contrast checker → · Palette generator →