#3F7BBB#3F7BBB

#3F7BBB is a mid, moderate cyan. Relative luminance 0.188; OKLCH L 57.3% C 0.117 H 251.9°. Best body text is #000000 at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BBB
RGB	rgb(63, 123, 187)
HSL	hsl(211, 50%, 49%)
HSV	hsv(211, 66%, 73%)
CMYK	cmyk(66.3%, 34.2%, 0%, 26.7%)
CIE-LAB	lab(50.46, 1.18, -39.38)
CIE-LCH	lch(50.46, 39.40, 271.72°)
OKLab	oklab(57.26% -0.0365 -0.1116)
OKLCH	oklch(57.26% 0.117 251.9)
XYZ	xyz(18.0992, 18.8087, 49.6807)
Luminance	0.1881 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BBB #BB7F3F

analogous

#3FB9BB #3F7BBB #413FBB

triadic

#3F7BBB #BB3F7B #7BBB3F

tetradic

#3F7BBB #BB3FB9 #BB7F3F #3FBB41

square

#3F7BBB #BB3FB9 #BB7F3F #3FBB41

split-complementary

#3F7BBB #BB413F #B9BB3F

monochromatic

#203F5F #305D8D #3F7BBB #6A9ACD #98B9DC

Accessibility & contrast

On white

4.41

#3F7BBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.76

#3F7BBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BBB

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BBB	#FFFFFF	#000000	##000000
##3F7BBB	1.00	4.41	4.76	4.76
#FFFFFF	4.41	1.00	21.00	21.00
#000000	4.76	21.00	1.00	1.00
##000000	4.76	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#5F7FBE

Deuteranopia (green-blind)

#4E73BA

Tritanopia (blue-blind)

#008A92

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7bbb;
/* rgb */ color: rgb(63, 123, 187);
/* oklch */ color: oklch(57.3% 0.117 251.9);

Tailwind

colors: {
  custom: {
    50: '#81a0d0',
    500: '#3f7bbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bbb;
$custom-light: #81a0d0;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bbb",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 187
  },
  "hsl": {
    "h": 210.968,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.57258,
    "c": 0.11744,
    "h": 251.9
  },
  "luminance": 0.18811
}

Semantic roles & 50–950 ramp

primary

#3F7BBB

secondary

#C8AC8E

accent

#964FD9

background

#F8F9FC

surface

#F0F2F9

border

#CBCCD2

text

#0B0E14

muted

#7C7E82

Preview Lab

Preview with #3F7BBB

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

Preview Lab → · Contrast checker → · Palette generator →