#3F77BA#3F77BA

#3F77BA is a mid, vivid cyan. Relative luminance 0.178; OKLCH L 56.3% C 0.120 H 254.2°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3F77BA
RGB	rgb(63, 119, 186)
HSL	hsl(213, 49%, 49%)
HSV	hsv(213, 66%, 73%)
CMYK	cmyk(66.1%, 36%, 0%, 27.1%)
CIE-LAB	lab(49.24, 3.25, -40.73)
CIE-LCH	lch(49.24, 40.86, 274.57°)
OKLab	oklab(56.29% -0.0327 -0.1156)
OKLCH	oklch(56.29% 0.12 254.2)
XYZ	xyz(17.5064, 17.7938, 48.9568)
Luminance	0.1780 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F77BA #BA823F

analogous

#3FB5BA #3F77BA #453FBA

triadic

#3F77BA #BA3F77 #77BA3F

tetradic

#3F77BA #BA3FB5 #BA823F #3FBA45

square

#3F77BA #BA3FB5 #BA823F #3FBA45

split-complementary

#3F77BA #BA453F #B5BA3F

monochromatic

#203D5F #305A8C #3F77BA #6A97CC #97B7DC

Accessibility & contrast

On white

4.61

#3F77BA on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#3F77BA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3F77BA

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F77BA	#FFFFFF	#000000	##FFFFFF
##3F77BA	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5A7BBD

Deuteranopia (green-blind)

#4870B9

Tritanopia (blue-blind)

#008690

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3f77ba;
/* rgb */ color: rgb(63, 119, 186);
/* oklch */ color: oklch(56.3% 0.120 254.2);

Tailwind

colors: {
  custom: {
    50: '#819dcf',
    500: '#3f77ba',
    950: '#000000',
  },
}

SCSS

$custom: #3f77ba;
$custom-light: #819dcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f77ba",
  "rgb": {
    "r": 63,
    "g": 119,
    "b": 186
  },
  "hsl": {
    "h": 212.683,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.56289,
    "c": 0.12013,
    "h": 254.2
  },
  "luminance": 0.17796
}

Semantic roles & 50–950 ramp

primary

#3F77BA

secondary

#C8AD8D

accent

#9A4FD9

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F77BA

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

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