#3F7BBE#3F7BBE

#3F7BBE is a mid, vivid cyan. Relative luminance 0.189; OKLCH L 57.4% C 0.121 H 252.9°. Best body text is #000000 at 4.79:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BBE
RGB	rgb(63, 123, 190)
HSL	hsl(212, 50%, 50%)
HSV	hsv(212, 67%, 75%)
CMYK	cmyk(66.8%, 35.3%, 0%, 25.5%)
CIE-LAB	lab(50.62, 2.23, -40.86)
CIE-LCH	lch(50.62, 40.92, 273.13°)
OKLab	oklab(57.43% -0.0357 -0.1159)
OKLCH	oklch(57.43% 0.121 252.9)
XYZ	xyz(18.4237, 18.9385, 51.3898)
Luminance	0.1894 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BBE #BE823F

analogous

#3FBBBE #3F7BBE #433FBE

triadic

#3F7BBE #BE3F7B #7BBE3F

tetradic

#3F7BBE #BE3FBB #BE823F #3FBE43

square

#3F7BBE #BE3FBB #BE823F #3FBE43

split-complementary

#3F7BBE #BE433F #BBBE3F

monochromatic

#213F62 #305D90 #3F7BBE #6C9ACE #9ABADD

Accessibility & contrast

On white

4.39

#3F7BBE on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.79

#3F7BBE on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BBE

4.79:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BBE	#FFFFFF	#000000	##000000
##3F7BBE	1.00	4.39	4.79	4.79
#FFFFFF	4.39	1.00	21.00	21.00
#000000	4.79	21.00	1.00	1.00
##000000	4.79	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7FC1

Deuteranopia (green-blind)

#4C73BD

Tritanopia (blue-blind)

#008B93

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7bbe;
/* rgb */ color: rgb(63, 123, 190);
/* oklch */ color: oklch(57.4% 0.121 252.9);

Tailwind

colors: {
  custom: {
    50: '#81a0d2',
    500: '#3f7bbe',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bbe;
$custom-light: #81a0d2;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bbe",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 190
  },
  "hsl": {
    "h": 211.654,
    "s": 50.198,
    "l": 49.608
  },
  "oklch": {
    "l": 0.57427,
    "c": 0.12132,
    "h": 252.9
  },
  "luminance": 0.1894
}

Semantic roles & 50–950 ramp

primary

#3F7BBE

secondary

#C9AE8F

accent

#984EDA

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F7BBE

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

Preview Lab → · Contrast checker → · Palette generator →