#3F7BBA#3F7BBA

#3F7BBA is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.2% C 0.116 H 251.5°. Best body text is #000000 at 4.75:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BBA
RGB	rgb(63, 123, 186)
HSL	hsl(211, 49%, 49%)
HSV	hsv(211, 66%, 73%)
CMYK	cmyk(66.1%, 33.9%, 0%, 27.1%)
CIE-LAB	lab(50.41, 0.83, -38.88)
CIE-LCH	lch(50.41, 38.89, 271.23°)
OKLab	oklab(57.2% -0.0368 -0.1102)
OKLCH	oklch(57.2% 0.116 251.5)
XYZ	xyz(17.9925, 18.7660, 49.1188)
Luminance	0.1877 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BBA #BA7E3F

analogous

#3FB9BA #3F7BBA #413FBA

triadic

#3F7BBA #BA3F7B #7BBA3F

tetradic

#3F7BBA #BA3FB9 #BA7E3F #3FBA41

square

#3F7BBA #BA3FB9 #BA7E3F #3FBA41

split-complementary

#3F7BBA #BA413F #B9BA3F

monochromatic

#203F5F #305D8C #3F7BBA #6A9ACC #97B9DC

Accessibility & contrast

On white

4.42

#3F7BBA on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.75

#3F7BBA on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BBA

4.75:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BBA	#FFFFFF	#000000	##000000
##3F7BBA	1.00	4.42	4.75	4.75
#FFFFFF	4.42	1.00	21.00	21.00
#000000	4.75	21.00	1.00	1.00
##000000	4.75	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7EBD

Deuteranopia (green-blind)

#4E73B9

Tritanopia (blue-blind)

#008A92

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7bba;
/* rgb */ color: rgb(63, 123, 186);
/* oklch */ color: oklch(57.2% 0.116 251.5);

Tailwind

colors: {
  custom: {
    50: '#81a0cf',
    500: '#3f7bba',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bba;
$custom-light: #81a0cf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bba",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 186
  },
  "hsl": {
    "h": 210.732,
    "s": 49.398,
    "l": 48.824
  },
  "oklch": {
    "l": 0.57202,
    "c": 0.11615,
    "h": 251.5
  },
  "luminance": 0.18768
}

Semantic roles & 50–950 ramp

primary

#3F7BBA

secondary

#C8AB8D

accent

#964FD9

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F7BBA

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

Preview Lab → · Contrast checker → · Palette generator →