#3F7BB7#3F7BB7

#3F7BB7 is a mid, moderate cyan. Relative luminance 0.186; OKLCH L 57.0% C 0.112 H 250.4°. Best body text is #000000 at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BB7
RGB	rgb(63, 123, 183)
HSL	hsl(210, 49%, 48%)
HSV	hsv(210, 66%, 72%)
CMYK	cmyk(65.6%, 32.8%, 0%, 28.2%)
CIE-LAB	lab(50.26, -0.21, -37.39)
CIE-LCH	lch(50.26, 37.39, 269.67°)
OKLab	oklab(57.04% -0.0376 -0.1058)
OKLCH	oklch(57.04% 0.112 250.4)
XYZ	xyz(17.6769, 18.6398, 47.4568)
Luminance	0.1864 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BB7 #B77B3F

analogous

#3FB7B7 #3F7BB7 #3F3FB7

triadic

#3F7BB7 #B73F7B #7BB73F

tetradic

#3F7BB7 #B73FB7 #B77B3F #3FB73F

square

#3F7BB7 #B73FB7 #B77B3F #3FB73F

split-complementary

#3F7BB7 #B73F3F #B7B73F

monochromatic

#203E5C #2F5C89 #3F7BB7 #689ACB #96B8DB

Accessibility & contrast

On white

4.44

#3F7BB7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.73

#3F7BB7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BB7

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BB7	#FFFFFF	#000000	##000000
##3F7BB7	1.00	4.44	4.73	4.73
#FFFFFF	4.44	1.00	21.00	21.00
#000000	4.73	21.00	1.00	1.00
##000000	4.73	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#617EBA

Deuteranopia (green-blind)

#5072B6

Tritanopia (blue-blind)

#008991

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7bb7;
/* rgb */ color: rgb(63, 123, 183);
/* oklch */ color: oklch(57.0% 0.112 250.4);

Tailwind

colors: {
  custom: {
    50: '#80a0cd',
    500: '#3f7bb7',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bb7;
$custom-light: #80a0cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bb7",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 183
  },
  "hsl": {
    "h": 210,
    "s": 48.78,
    "l": 48.235
  },
  "oklch": {
    "l": 0.57036,
    "c": 0.11231,
    "h": 250.4
  },
  "luminance": 0.18642
}

Semantic roles & 50–950 ramp

primary

#3F7BB7

secondary

#C6A98B

accent

#944FD8

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F7BB7

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

Preview Lab → · Contrast checker → · Palette generator →