#3F8CBB#3F8CBB

#3F8CBB is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 61.2% C 0.104 H 238.6°. Best body text is #000000 at 5.68:1 contrast (WCAG AA passes).

Color values

HEX	#3F8CBB
RGB	rgb(63, 140, 187)
HSL	hsl(203, 50%, 49%)
HSV	hsv(203, 66%, 73%)
CMYK	cmyk(66.3%, 25.1%, 0%, 26.7%)
CIE-LAB	lab(55.48, -8.77, -31.51)
CIE-LCH	lch(55.48, 32.71, 254.45°)
OKLab	oklab(61.22% -0.0542 -0.0886)
OKLCH	oklch(61.22% 0.104 238.6)
XYZ	xyz(20.3942, 23.3987, 50.4457)
Luminance	0.2340 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8CBB #BB6E3F

analogous

#3FBBAC #3F8CBB #3F4EBB

triadic

#3F8CBB #BB3F8C #8CBB3F

tetradic

#3F8CBB #AC3FBB #BB6E3F #4EBB3F

square

#3F8CBB #AC3FBB #BB6E3F #4EBB3F

split-complementary

#3F8CBB #BB3F4E #BBAC3F

monochromatic

#20475F #306A8D #3F8CBB #6AA8CD #98C2DC

Accessibility & contrast

On white

3.70

#3F8CBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.68

#3F8CBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8CBB

5.68:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8CBB	#FFFFFF	#000000	##000000
##3F8CBB	1.00	3.70	5.68	5.68
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.68	21.00	1.00	1.00
##000000	5.68	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#768CBD

Deuteranopia (green-blind)

#657FBA

Tritanopia (blue-blind)

#00989C

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #3f8cbb;
/* rgb */ color: rgb(63, 140, 187);
/* oklch */ color: oklch(61.2% 0.104 238.6);

Tailwind

colors: {
  custom: {
    50: '#81adcf',
    500: '#3f8cbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f8cbb;
$custom-light: #81adcf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8cbb",
  "rgb": {
    "r": 63,
    "g": 140,
    "b": 187
  },
  "hsl": {
    "h": 202.742,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.61215,
    "c": 0.10387,
    "h": 238.6
  },
  "luminance": 0.23401
}

Semantic roles & 50–950 ramp

primary

#3F8CBB

secondary

#C8A48E

accent

#834FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3F8CBB

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

Preview Lab → · Contrast checker → · Palette generator →