#3F7BBF#3F7BBF

#3F7BBF is a mid, vivid cyan. Relative luminance 0.190; OKLCH L 57.5% C 0.123 H 253.2°. Best body text is #000000 at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BBF
RGB	rgb(63, 123, 191)
HSL	hsl(212, 50%, 50%)
HSV	hsv(212, 67%, 75%)
CMYK	cmyk(67%, 35.6%, 0%, 25.1%)
CIE-LAB	lab(50.67, 2.58, -41.36)
CIE-LCH	lch(50.67, 41.44, 273.58°)
OKLab	oklab(57.48% -0.0354 -0.1174)
OKLCH	oklch(57.48% 0.123 253.2)
XYZ	xyz(18.5334, 18.9824, 51.9674)
Luminance	0.1898 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BBF #BF833F

analogous

#3FBBBF #3F7BBF #433FBF

triadic

#3F7BBF #BF3F7B #7BBF3F

tetradic

#3F7BBF #BF3FBB #BF833F #3FBF43

square

#3F7BBF #BF3FBB #BF833F #3FBF43

split-complementary

#3F7BBF #BF433F #BBBF3F

monochromatic

#214063 #305D91 #3F7BBF #6D9BCF #9BBADE

Accessibility & contrast

On white

4.38

#3F7BBF on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.80

#3F7BBF on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BBF

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BBF	#FFFFFF	#000000	##000000
##3F7BBF	1.00	4.38	4.80	4.80
#FFFFFF	4.38	1.00	21.00	21.00
#000000	4.80	21.00	1.00	1.00
##000000	4.80	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7FC2

Deuteranopia (green-blind)

#4B73BE

Tritanopia (blue-blind)

#008B94

Achromatopsia (no color)

#797979

Design tokens & code

CSS

--color: #3f7bbf;
/* rgb */ color: rgb(63, 123, 191);
/* oklch */ color: oklch(57.5% 0.123 253.2);

Tailwind

colors: {
  custom: {
    50: '#81a0d2',
    500: '#3f7bbf',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bbf;
$custom-light: #81a0d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bbf",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 191
  },
  "hsl": {
    "h": 211.875,
    "s": 50.394,
    "l": 49.804
  },
  "oklch": {
    "l": 0.57484,
    "c": 0.12263,
    "h": 253.2
  },
  "luminance": 0.18984
}

Semantic roles & 50–950 ramp

primary

#3F7BBF

secondary

#CAAF90

accent

#984EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F7BBF

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

Preview Lab → · Contrast checker → · Palette generator →