#3F61DB#3F61DB

#3F61DB is a mid, vivid blue. Relative luminance 0.147; OKLCH L 53.9% C 0.191 H 267.7°. Best body text is #FFFFFF at 5.32:1 contrast (WCAG AA passes).

Color values

HEX	#3F61DB
RGB	rgb(63, 97, 219)
HSL	hsl(227, 68%, 55%)
HSV	hsv(227, 71%, 86%)
CMYK	cmyk(71.2%, 55.7%, 0%, 14.1%)
CIE-LAB	lab(45.25, 28.90, -66.06)
CIE-LCH	lch(45.25, 72.10, 293.63°)
OKLab	oklab(53.88% -0.0077 -0.1903)
OKLCH	oklch(53.88% 0.191 267.7)
XYZ	xyz(19.1063, 14.7186, 68.8381)
Luminance	0.1472 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F61DB #DBB93F

analogous

#3FAFDB #3F61DB #6B3FDB

triadic

#3F61DB #DB3F61 #61DB3F

tetradic

#3F61DB #DB3FAF #DBB93F #3FDB6B

square

#3F61DB #DB3FAF #DBB93F #3FDB6B

split-complementary

#3F61DB #DB6B3F #AFDB3F

monochromatic

#193186 #2344BA #3F61DB #738BE5 #A6B6EE

Accessibility & contrast

On white

5.32

#3F61DB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.94

#3F61DB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F61DB

5.32:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F61DB	#FFFFFF	#000000	##FFFFFF
##3F61DB	1.00	5.32	3.94	5.32
#FFFFFF	5.32	1.00	21.00	1.00
#000000	3.94	21.00	1.00	21.00
##FFFFFF	5.32	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0073DF

Deuteranopia (green-blind)

#0064D9

Tritanopia (blue-blind)

#007F94

Achromatopsia (no color)

#6B6B6B

Design tokens & code

CSS

--color: #3f61db;
/* rgb */ color: rgb(63, 97, 219);
/* oklch */ color: oklch(53.9% 0.191 267.7);

Tailwind

colors: {
  custom: {
    50: '#888de7',
    500: '#3f61db',
    950: '#000000',
  },
}

SCSS

$custom: #3f61db;
$custom-light: #888de7;
$custom-dark: #000000;

JSON

{
  "hex": "#3f61db",
  "rgb": {
    "r": 63,
    "g": 97,
    "b": 219
  },
  "hsl": {
    "h": 226.923,
    "s": 68.421,
    "l": 55.294
  },
  "oklch": {
    "l": 0.5388,
    "c": 0.19051,
    "h": 267.7
  },
  "luminance": 0.14721
}

Semantic roles & 50–950 ramp

primary

#3F61DB

secondary

#DCCD9A

accent

#C53DEB

background

#F9F8FE

surface

#F1F0FD

border

#CBCBD5

text

#0D0C16

muted

#7E7D84

Preview Lab

Preview with #3F61DB

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

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