#3F7BD2#3F7BD2

#3F7BD2 is a mid, vivid blue. Relative luminance 0.199; OKLCH L 58.6% C 0.148 H 257.9°. Best body text is #000000 at 4.98:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BD2
RGB	rgb(63, 123, 210)
HSL	hsl(216, 62%, 54%)
HSV	hsv(216, 70%, 82%)
CMYK	cmyk(70%, 41.4%, 0%, 17.6%)
CIE-LAB	lab(51.69, 9.34, -50.56)
CIE-LCH	lch(51.69, 51.42, 280.46°)
OKLab	oklab(58.62% -0.031 -0.1444)
OKLCH	oklch(58.62% 0.148 257.9)
XYZ	xyz(20.7615, 19.8736, 63.7021)
Luminance	0.1988 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BD2 #D2963F

analogous

#3FC4D2 #3F7BD2 #4C3FD2

triadic

#3F7BD2 #D23F7B #7BD23F

tetradic

#3F7BD2 #D23FC4 #D2963F #3FD24C

square

#3F7BD2 #D23FC4 #D2963F #3FD24C

split-complementary

#3F7BD2 #D24C3F #C4D23F

monochromatic

#1D437A #285EAC #3F7BD2 #719DDE #A2BFE9

Accessibility & contrast

On white

4.22

#3F7BD2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.98

#3F7BD2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BD2

4.98:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BD2	#FFFFFF	#000000	##000000
##3F7BD2	1.00	4.22	4.98	4.98
#FFFFFF	4.22	1.00	21.00	21.00
#000000	4.98	21.00	1.00	1.00
##000000	4.98	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5283D5

Deuteranopia (green-blind)

#3A75D0

Tritanopia (blue-blind)

#008F9C

Achromatopsia (no color)

#7B7B7B

Design tokens & code

CSS

--color: #3f7bd2;
/* rgb */ color: rgb(63, 123, 210);
/* oklch */ color: oklch(58.6% 0.148 257.9);

Tailwind

colors: {
  custom: {
    50: '#85a0e0',
    500: '#3f7bd2',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bd2;
$custom-light: #85a0e0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bd2",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 210
  },
  "hsl": {
    "h": 215.51,
    "s": 62.025,
    "l": 53.529
  },
  "oklch": {
    "l": 0.58619,
    "c": 0.14765,
    "h": 257.9
  },
  "luminance": 0.19876
}

Semantic roles & 50–950 ramp

primary

#3F7BD2

secondary

#D6BC97

accent

#A343E5

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F7BD2

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

Preview Lab → · Contrast checker → · Palette generator →