#3F76CC#3F76CC

#3F76CC is a mid, vivid blue. Relative luminance 0.184; OKLCH L 57.2% C 0.145 H 259.1°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3F76CC
RGB	rgb(63, 118, 204)
HSL	hsl(217, 58%, 52%)
HSV	hsv(217, 69%, 80%)
CMYK	cmyk(69.1%, 42.2%, 0%, 20%)
CIE-LAB	lab(49.94, 10.27, -49.94)
CIE-LCH	lch(49.94, 50.99, 281.62°)
OKLab	oklab(57.15% -0.0276 -0.1426)
OKLCH	oklch(57.15% 0.145 259.1)
XYZ	xyz(19.4235, 18.3712, 59.6374)
Luminance	0.1837 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F76CC #CC953F

analogous

#3FBCCC #3F76CC #4F3FCC

triadic

#3F76CC #CC3F76 #76CC3F

tetradic

#3F76CC #CC3FBC #CC953F #3FCC4F

square

#3F76CC #CC3FBC #CC953F #3FCC4F

split-complementary

#3F76CC #CC4F3F #BCCC3F

monochromatic

#1E3F72 #2B5AA3 #3F76CC #6F99D9 #A0BBE6

Accessibility & contrast

On white

4.49

#3F76CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.67

#3F76CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F76CC

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F76CC	#FFFFFF	#000000	##000000
##3F76CC	1.00	4.49	4.67	4.67
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4D7ECF

Deuteranopia (green-blind)

#3671CA

Tritanopia (blue-blind)

#008A97

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3f76cc;
/* rgb */ color: rgb(63, 118, 204);
/* oklch */ color: oklch(57.2% 0.145 259.1);

Tailwind

colors: {
  custom: {
    50: '#849ddc',
    500: '#3f76cc',
    950: '#000000',
  },
}

SCSS

$custom: #3f76cc;
$custom-light: #849ddc;
$custom-dark: #000000;

JSON

{
  "hex": "#3f76cc",
  "rgb": {
    "r": 63,
    "g": 118,
    "b": 204
  },
  "hsl": {
    "h": 216.596,
    "s": 58.025,
    "l": 52.353
  },
  "oklch": {
    "l": 0.57152,
    "c": 0.14526,
    "h": 259.1
  },
  "luminance": 0.18373
}

Semantic roles & 50–950 ramp

primary

#3F76CC

secondary

#D2BA95

accent

#A547E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3F76CC

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

Preview Lab → · Contrast checker → · Palette generator →