#3F76B5#3F76B5

#3F76B5 is a mid, moderate cyan. Relative luminance 0.173; OKLCH L 55.8% C 0.115 H 253.3°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#3F76B5
RGB	rgb(63, 118, 181)
HSL	hsl(212, 48%, 48%)
HSV	hsv(212, 65%, 71%)
CMYK	cmyk(65.2%, 34.8%, 0%, 29%)
CIE-LAB	lab(48.70, 2.11, -38.71)
CIE-LCH	lch(48.70, 38.76, 273.12°)
OKLab	oklab(55.78% -0.033 -0.1097)
OKLCH	oklch(55.78% 0.115 253.3)
XYZ	xyz(16.8658, 17.3482, 46.1668)
Luminance	0.1735 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F76B5 #B57E3F

analogous

#3FB1B5 #3F76B5 #433FB5

triadic

#3F76B5 #B53F76 #76B53F

tetradic

#3F76B5 #B53FB1 #B57E3F #3FB543

square

#3F76B5 #B53FB1 #B57E3F #3FB543

split-complementary

#3F76B5 #B5433F #B1B53F

monochromatic

#1F3B5A #2F5888 #3F76B5 #6795CA #94B5DA

Accessibility & contrast

On white

4.70

#3F76B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#3F76B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3F76B5

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F76B5	#FFFFFF	#000000	##FFFFFF
##3F76B5	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7AB8

Deuteranopia (green-blind)

#4A6FB4

Tritanopia (blue-blind)

#00858D

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3f76b5;
/* rgb */ color: rgb(63, 118, 181);
/* oklch */ color: oklch(55.8% 0.115 253.3);

Tailwind

colors: {
  custom: {
    50: '#809dcb',
    500: '#3f76b5',
    950: '#000000',
  },
}

SCSS

$custom: #3f76b5;
$custom-light: #809dcb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f76b5",
  "rgb": {
    "r": 63,
    "g": 118,
    "b": 181
  },
  "hsl": {
    "h": 212.034,
    "s": 48.361,
    "l": 47.843
  },
  "oklch": {
    "l": 0.55775,
    "c": 0.11456,
    "h": 253.3
  },
  "luminance": 0.1735
}

Semantic roles & 50–950 ramp

primary

#3F76B5

secondary

#C5AA8A

accent

#9950D8

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F76B5

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

Preview Lab → · Contrast checker → · Palette generator →