#3F7FB5#3F7FB5

#3F7FB5 is a mid, moderate cyan. Relative luminance 0.196; OKLCH L 57.9% C 0.106 H 246.5°. Best body text is #000000 at 4.91:1 contrast (WCAG AA passes).

Color values

HEX	#3F7FB5
RGB	rgb(63, 127, 181)
HSL	hsl(207, 48%, 48%)
HSV	hsv(207, 65%, 71%)
CMYK	cmyk(65.2%, 29.8%, 0%, 29%)
CIE-LAB	lab(51.35, -3.28, -34.54)
CIE-LCH	lch(51.35, 34.69, 264.57°)
OKLab	oklab(57.86% -0.0424 -0.0975)
OKLCH	oklch(57.86% 0.106 246.5)
XYZ	xyz(17.9766, 19.5699, 46.5371)
Luminance	0.1957 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7FB5 #B5753F

analogous

#3FB5B0 #3F7FB5 #3F44B5

triadic

#3F7FB5 #B53F7F #7FB53F

tetradic

#3F7FB5 #B03FB5 #B5753F #44B53F

square

#3F7FB5 #B03FB5 #B5753F #44B53F

split-complementary

#3F7FB5 #B53F44 #B5B03F

monochromatic

#1F3F5A #2F5F88 #3F7FB5 #679DCA #94BADA

Accessibility & contrast

On white

4.27

#3F7FB5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.91

#3F7FB5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7FB5

4.91:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7FB5	#FFFFFF	#000000	##000000
##3F7FB5	1.00	4.27	4.91	4.91
#FFFFFF	4.27	1.00	21.00	21.00
#000000	4.91	21.00	1.00	1.00
##000000	4.91	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#6781B7

Deuteranopia (green-blind)

#5775B4

Tritanopia (blue-blind)

#008C92

Achromatopsia (no color)

#7A7A7A

Design tokens & code

CSS

--color: #3f7fb5;
/* rgb */ color: rgb(63, 127, 181);
/* oklch */ color: oklch(57.9% 0.106 246.5);

Tailwind

colors: {
  custom: {
    50: '#80a3cb',
    500: '#3f7fb5',
    950: '#000000',
  },
}

SCSS

$custom: #3f7fb5;
$custom-light: #80a3cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7fb5",
  "rgb": {
    "r": 63,
    "g": 127,
    "b": 181
  },
  "hsl": {
    "h": 207.458,
    "s": 48.361,
    "l": 47.843
  },
  "oklch": {
    "l": 0.57857,
    "c": 0.10631,
    "h": 246.5
  },
  "luminance": 0.19572
}

Semantic roles & 50–950 ramp

primary

#3F7FB5

secondary

#C5A58A

accent

#8E50D8

background

#F8FAFC

surface

#EFF3F8

border

#CACDD1

text

#0B0F13

muted

#7C7F82

Preview Lab

Preview with #3F7FB5

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

Preview Lab → · Contrast checker → · Palette generator →