#3F78BA#3F78BA

#3F78BA is a mid, moderate cyan. Relative luminance 0.180; OKLCH L 56.5% C 0.119 H 253.6°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3F78BA
RGB	rgb(63, 120, 186)
HSL	hsl(212, 49%, 49%)
HSV	hsv(212, 66%, 73%)
CMYK	cmyk(66.1%, 35.5%, 0%, 27.1%)
CIE-LAB	lab(49.54, 2.65, -40.27)
CIE-LCH	lch(49.54, 40.35, 273.76°)
OKLab	oklab(56.52% -0.0337 -0.1142)
OKLCH	oklch(56.52% 0.119 253.6)
XYZ	xyz(17.6261, 18.0331, 48.9967)
Luminance	0.1804 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F78BA #BA813F

analogous

#3FB6BA #3F78BA #433FBA

triadic

#3F78BA #BA3F78 #78BA3F

tetradic

#3F78BA #BA3FB6 #BA813F #3FBA43

square

#3F78BA #BA3FB6 #BA813F #3FBA43

split-complementary

#3F78BA #BA433F #B6BA3F

monochromatic

#203D5F #305B8C #3F78BA #6A97CC #97B7DC

Accessibility & contrast

On white

4.56

#3F78BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#3F78BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F78BA

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F78BA	#FFFFFF	#000000	##000000
##3F78BA	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7CBD

Deuteranopia (green-blind)

#4A70B9

Tritanopia (blue-blind)

#008790

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3f78ba;
/* rgb */ color: rgb(63, 120, 186);
/* oklch */ color: oklch(56.5% 0.119 253.6);

Tailwind

colors: {
  custom: {
    50: '#819ecf',
    500: '#3f78ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f78ba;
$custom-light: #819ecf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f78ba",
  "rgb": {
    "r": 63,
    "g": 120,
    "b": 186
  },
  "hsl": {
    "h": 212.195,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.56516,
    "c": 0.11911,
    "h": 253.6
  },
  "luminance": 0.18035
}

Semantic roles & 50–950 ramp

primary

#3F78BA

secondary

#C8AD8D

accent

#994FD9

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F78BA

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

Preview Lab → · Contrast checker → · Palette generator →