#3F76DB#3F76DB

#3F76DB is a mid, vivid blue. Relative luminance 0.191; OKLCH L 58.1% C 0.165 H 261.3°. Best body text is #000000 at 4.83:1 contrast (WCAG AA passes).

Color values

HEX	#3F76DB
RGB	rgb(63, 118, 219)
HSL	hsl(219, 68%, 55%)
HSV	hsv(219, 71%, 86%)
CMYK	cmyk(71.2%, 46.1%, 0%, 14.1%)
CIE-LAB	lab(50.83, 15.67, -57.03)
CIE-LCH	lch(50.83, 59.15, 285.37°)
OKLab	oklab(58.13% -0.0249 -0.1635)
OKLCH	oklch(58.13% 0.165 261.3)
XYZ	xyz(21.3099, 19.1258, 69.5727)
Luminance	0.1913 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F76DB #DBA43F

analogous

#3FC4DB #3F76DB #563FDB

triadic

#3F76DB #DB3F76 #76DB3F

tetradic

#3F76DB #DB3FC4 #DBA43F #3FDB56

square

#3F76DB #DB3FC4 #DBA43F #3FDB56

split-complementary

#3F76DB #DB563F #C4DB3F

monochromatic

#194086 #2358BA #3F76DB #739BE5 #A6C0EE

Accessibility & contrast

On white

4.35

#3F76DB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.83

#3F76DB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F76DB

4.83:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F76DB	#FFFFFF	#000000	##000000
##3F76DB	1.00	4.35	4.83	4.83
#FFFFFF	4.35	1.00	21.00	21.00
#000000	4.83	21.00	1.00	1.00
##000000	4.83	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4181DF

Deuteranopia (green-blind)

#1E72D9

Tritanopia (blue-blind)

#008E9E

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f76db;
/* rgb */ color: rgb(63, 118, 219);
/* oklch */ color: oklch(58.1% 0.165 261.3);

Tailwind

colors: {
  custom: {
    50: '#879ce7',
    500: '#3f76db',
    950: '#000000',
  },
}

SCSS

$custom: #3f76db;
$custom-light: #879ce7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f76db",
  "rgb": {
    "r": 63,
    "g": 118,
    "b": 219
  },
  "hsl": {
    "h": 218.846,
    "s": 68.421,
    "l": 55.294
  },
  "oklch": {
    "l": 0.58126,
    "c": 0.16534,
    "h": 261.3
  },
  "luminance": 0.19128
}

Semantic roles & 50–950 ramp

primary

#3F76DB

secondary

#DCC59A

accent

#AE3DEB

background

#F9F9FE

surface

#F1F2FC

border

#CBCCD5

text

#0D0E16

muted

#7E7E84

Preview Lab

Preview with #3F76DB

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

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