#3F7BD9#3F7BD9

#3F7BD9 is a mid, vivid blue. Relative luminance 0.202; OKLCH L 59.1% C 0.157 H 259.1°. Best body text is #000000 at 5.05:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BD9
RGB	rgb(63, 123, 217)
HSL	hsl(217, 67%, 55%)
HSV	hsv(217, 71%, 85%)
CMYK	cmyk(71%, 43.3%, 0%, 14.9%)
CIE-LAB	lab(52.10, 11.85, -53.88)
CIE-LCH	lch(52.10, 55.17, 282.41°)
OKLab	oklab(59.06% -0.0296 -0.1541)
OKLCH	oklch(59.06% 0.157 259.1)
XYZ	xyz(21.6527, 20.2301, 68.3958)
Luminance	0.2023 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BD9 #D99D3F

analogous

#3FC8D9 #3F7BD9 #503FD9

triadic

#3F7BD9 #D93F7B #7BD93F

tetradic

#3F7BD9 #D93FC8 #D99D3F #3FD950

square

#3F7BD9 #D93FC8 #D99D3F #3FD950

split-complementary

#3F7BD9 #D9503F #C8D93F

monochromatic

#1A4384 #245DB7 #3F7BD9 #729EE3 #A5C1ED

Accessibility & contrast

On white

4.16

#3F7BD9 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.05

#3F7BD9 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BD9

5.05:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BD9	#FFFFFF	#000000	##000000
##3F7BD9	1.00	4.16	5.05	5.05
#FFFFFF	4.16	1.00	21.00	21.00
#000000	5.05	21.00	1.00	1.00
##000000	5.05	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D84DD

Deuteranopia (green-blind)

#3176D7

Tritanopia (blue-blind)

#00919F

Achromatopsia (no color)

#7C7C7C

Design tokens & code

CSS

--color: #3f7bd9;
/* rgb */ color: rgb(63, 123, 217);
/* oklch */ color: oklch(59.1% 0.157 259.1);

Tailwind

colors: {
  custom: {
    50: '#86a0e5',
    500: '#3f7bd9',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bd9;
$custom-light: #86a0e5;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bd9",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 217
  },
  "hsl": {
    "h": 216.623,
    "s": 66.957,
    "l": 54.902
  },
  "oklch": {
    "l": 0.5906,
    "c": 0.15692,
    "h": 259.1
  },
  "luminance": 0.20232
}

Semantic roles & 50–950 ramp

primary

#3F7BD9

secondary

#DAC19A

accent

#A73EEA

background

#F8F9FE

surface

#F0F2FC

border

#CBCCD5

text

#0D0E16

muted

#7D7E84

Preview Lab

Preview with #3F7BD9

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

Preview Lab → · Contrast checker → · Palette generator →