#3F8FBB#3F8FBB

#3F8FBB is a mid, moderate cyan. Relative luminance 0.243; OKLCH L 61.9% C 0.102 H 235.9°. Best body text is #000000 at 5.86:1 contrast (WCAG AA passes).

Color values

HEX	#3F8FBB
RGB	rgb(63, 143, 187)
HSL	hsl(201, 50%, 49%)
HSV	hsv(201, 66%, 73%)
CMYK	cmyk(66.3%, 23.5%, 0%, 26.7%)
CIE-LAB	lab(56.37, -10.46, -30.13)
CIE-LCH	lch(56.37, 31.89, 250.85°)
OKLab	oklab(61.92% -0.0573 -0.0846)
OKLCH	oklch(61.92% 0.102 235.9)
XYZ	xyz(20.8385, 24.2873, 50.5938)
Luminance	0.2429 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8FBB #BB6B3F

analogous

#3FBBA9 #3F8FBB #3F51BB

triadic

#3F8FBB #BB3F8F #8FBB3F

tetradic

#3F8FBB #A93FBB #BB6B3F #51BB3F

square

#3F8FBB #A93FBB #BB6B3F #51BB3F

split-complementary

#3F8FBB #BB3F51 #BBA93F

monochromatic

#20495F #306C8D #3F8FBB #6AAACD #98C4DC

Accessibility & contrast

On white

3.58

#3F8FBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.86

#3F8FBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8FBB

5.86:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8FBB	#FFFFFF	#000000	##000000
##3F8FBB	1.00	3.58	5.86	5.86
#FFFFFF	3.58	1.00	21.00	21.00
#000000	5.86	21.00	1.00	1.00
##000000	5.86	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8EBD

Deuteranopia (green-blind)

#6982BA

Tritanopia (blue-blind)

#009A9E

Achromatopsia (no color)

#878787

Design tokens & code

CSS

--color: #3f8fbb;
/* rgb */ color: rgb(63, 143, 187);
/* oklch */ color: oklch(61.9% 0.102 235.9);

Tailwind

colors: {
  custom: {
    50: '#81afcf',
    500: '#3f8fbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f8fbb;
$custom-light: #81afcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8fbb",
  "rgb": {
    "r": 63,
    "g": 143,
    "b": 187
  },
  "hsl": {
    "h": 201.29,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.61924,
    "c": 0.10218,
    "h": 235.9
  },
  "luminance": 0.2429
}

Semantic roles & 50–950 ramp

primary

#3F8FBB

secondary

#C8A28E

accent

#804FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3F8FBB

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

Preview Lab → · Contrast checker → · Palette generator →