#3F8BB1#3F8BB1

#3F8BB1 is a mid, moderate cyan. Relative luminance 0.227; OKLCH L 60.5% C 0.094 H 233.1°. Best body text is #000000 at 5.54:1 contrast (WCAG AA passes).

Color values

HEX	#3F8BB1
RGB	rgb(63, 139, 177)
HSL	hsl(200, 48%, 47%)
HSV	hsv(200, 64%, 69%)
CMYK	cmyk(64.4%, 21.5%, 0%, 30.6%)
CIE-LAB	lab(54.76, -11.53, -26.93)
CIE-LCH	lch(54.76, 29.30, 246.82°)
OKLab	oklab(60.5% -0.0566 -0.0754)
OKLCH	oklch(60.5% 0.094 233.1)
XYZ	xyz(19.2152, 22.6944, 44.9542)
Luminance	0.2270 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F8BB1 #B1653F

analogous

#3FB19E #3F8BB1 #3F52B1

triadic

#3F8BB1 #B13F8B #8BB13F

tetradic

#3F8BB1 #9E3FB1 #B1653F #52B13F

square

#3F8BB1 #9E3FB1 #B1653F #52B13F

split-complementary

#3F8BB1 #B13F52 #B19E3F

monochromatic

#1F4457 #2F6884 #3F8BB1 #65A7C8 #92C1D8

Accessibility & contrast

On white

3.79

#3F8BB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.54

#3F8BB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F8BB1

5.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F8BB1	#FFFFFF	#000000	##000000
##3F8BB1	1.00	3.79	5.54	5.54
#FFFFFF	3.79	1.00	21.00	21.00
#000000	5.54	21.00	1.00	1.00
##000000	5.54	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#788AB3

Deuteranopia (green-blind)

#697EB0

Tritanopia (blue-blind)

#009598

Achromatopsia (no color)

#838383

Design tokens & code

CSS

--color: #3f8bb1;
/* rgb */ color: rgb(63, 139, 177);
/* oklch */ color: oklch(60.5% 0.094 233.1);

Tailwind

colors: {
  custom: {
    50: '#80acc8',
    500: '#3f8bb1',
    950: '#000000',
  },
}

SCSS

$custom: #3f8bb1;
$custom-light: #80acc8;
$custom-dark: #000000;

JSON

{
  "hex": "#3f8bb1",
  "rgb": {
    "r": 63,
    "g": 139,
    "b": 177
  },
  "hsl": {
    "h": 200,
    "s": 47.5,
    "l": 47.059
  },
  "oklch": {
    "l": 0.60499,
    "c": 0.09432,
    "h": 233.1
  },
  "luminance": 0.22696
}

Semantic roles & 50–950 ramp

primary

#3F8BB1

secondary

#C49C88

accent

#7D51D7

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3F8BB1

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

Preview Lab → · Contrast checker → · Palette generator →