#3F7BBC#3F7BBC

#3F7BBC is a mid, moderate cyan. Relative luminance 0.189; OKLCH L 57.3% C 0.119 H 252.2°. Best body text is #000000 at 4.77:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BBC
RGB	rgb(63, 123, 188)
HSL	hsl(211, 50%, 49%)
HSV	hsv(211, 66%, 74%)
CMYK	cmyk(66.5%, 34.6%, 0%, 26.3%)
CIE-LAB	lab(50.51, 1.53, -39.88)
CIE-LCH	lch(50.51, 39.90, 272.20°)
OKLab	oklab(57.31% -0.0362 -0.1131)
OKLCH	oklch(57.31% 0.119 252.2)
XYZ	xyz(18.2066, 18.8517, 50.2464)
Luminance	0.1885 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BBC #BC803F

analogous

#3FBABC #3F7BBC #423FBC

triadic

#3F7BBC #BC3F7B #7BBC3F

tetradic

#3F7BBC #BC3FBA #BC803F #3FBC42

square

#3F7BBC #BC3FBA #BC803F #3FBC42

split-complementary

#3F7BBC #BC423F #BABC3F

monochromatic

#203F60 #305D8E #3F7BBC #6B9ACD #99B9DD

Accessibility & contrast

On white

4.40

#3F7BBC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.77

#3F7BBC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BBC

4.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BBC	#FFFFFF	#000000	##000000
##3F7BBC	1.00	4.40	4.77	4.77
#FFFFFF	4.40	1.00	21.00	21.00
#000000	4.77	21.00	1.00	1.00
##000000	4.77	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5E7FBF

Deuteranopia (green-blind)

#4D73BB

Tritanopia (blue-blind)

#008A93

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7bbc;
/* rgb */ color: rgb(63, 123, 188);
/* oklch */ color: oklch(57.3% 0.119 252.2);

Tailwind

colors: {
  custom: {
    50: '#81a0d0',
    500: '#3f7bbc',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bbc;
$custom-light: #81a0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bbc",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 188
  },
  "hsl": {
    "h": 211.2,
    "s": 49.801,
    "l": 49.216
  },
  "oklch": {
    "l": 0.57314,
    "c": 0.11873,
    "h": 252.2
  },
  "luminance": 0.18854
}

Semantic roles & 50–950 ramp

primary

#3F7BBC

secondary

#C9AD8E

accent

#974ED9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F7BBC

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

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