#3F8BBB#3F8BBB

#3F8BBB is a mid, moderate cyan. Relative luminance 0.231; OKLCH L 61.0% C 0.104 H 239.4°. Best body text is #000000 at 5.62:1 contrast (WCAG AA passes).

Color values

HEX	#3F8BBB
RGB	rgb(63, 139, 187)
HSL	hsl(203, 50%, 49%)
HSV	hsv(203, 66%, 73%)
CMYK	cmyk(66.3%, 25.7%, 0%, 26.7%)
CIE-LAB	lab(55.18, -8.20, -31.98)
CIE-LCH	lch(55.18, 33.01, 255.62°)
OKLab	oklab(60.98% -0.0531 -0.09)
OKLCH	oklch(60.98% 0.104 239.4)
XYZ	xyz(20.2487, 23.1077, 50.3972)
Luminance	0.2311 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8BBB #BB6F3F

analogous

#3FBBAD #3F8BBB #3F4DBB

triadic

#3F8BBB #BB3F8B #8BBB3F

tetradic

#3F8BBB #AD3FBB #BB6F3F #4DBB3F

square

#3F8BBB #AD3FBB #BB6F3F #4DBB3F

split-complementary

#3F8BBB #BB3F4D #BBAD3F

monochromatic

#20475F #30698D #3F8BBB #6AA7CD #98C2DC

Accessibility & contrast

On white

3.74

#3F8BBB on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.62

#3F8BBB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8BBB

5.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8BBB	#FFFFFF	#000000	##000000
##3F8BBB	1.00	3.74	5.62	5.62
#FFFFFF	3.74	1.00	21.00	21.00
#000000	5.62	21.00	1.00	1.00
##000000	5.62	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#758BBD

Deuteranopia (green-blind)

#647FBA

Tritanopia (blue-blind)

#00979B

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #3f8bbb;
/* rgb */ color: rgb(63, 139, 187);
/* oklch */ color: oklch(61.0% 0.104 239.4);

Tailwind

colors: {
  custom: {
    50: '#81accf',
    500: '#3f8bbb',
    950: '#000000',
  },
}

SCSS

$custom: #3f8bbb;
$custom-light: #81accf;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8bbb",
  "rgb": {
    "r": 63,
    "g": 139,
    "b": 187
  },
  "hsl": {
    "h": 203.226,
    "s": 49.6,
    "l": 49.02
  },
  "oklch": {
    "l": 0.60979,
    "c": 0.10448,
    "h": 239.4
  },
  "luminance": 0.2311
}

Semantic roles & 50–950 ramp

primary

#3F8BBB

secondary

#C8A48E

accent

#844FD9

background

#F8FAFC

surface

#F0F4F9

border

#CBCED2

text

#0B1014

muted

#7C7F82

Preview Lab

Preview with #3F8BBB

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

Preview Lab → · Contrast checker → · Palette generator →