#3F7BB2#3F7BB2

#3F7BB2 is a mid, moderate cyan. Relative luminance 0.184; OKLCH L 56.8% C 0.106 H 248.4°. Best body text is #000000 at 4.69:1 contrast (WCAG AA passes).

Color values

HEX	#3F7BB2
RGB	rgb(63, 123, 178)
HSL	hsl(209, 48%, 47%)
HSV	hsv(209, 65%, 70%)
CMYK	cmyk(64.6%, 30.9%, 0%, 30.2%)
CIE-LAB	lab(50.02, -1.94, -34.89)
CIE-LCH	lch(50.02, 34.94, 266.81°)
OKLab	oklab(56.77% -0.0391 -0.0985)
OKLCH	oklch(56.77% 0.106 248.4)
XYZ	xyz(17.1658, 18.4353, 44.7646)
Luminance	0.1844 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7BB2 #B2763F

analogous

#3FB2B0 #3F7BB2 #3F41B2

triadic

#3F7BB2 #B23F7B #7BB23F

tetradic

#3F7BB2 #B03FB2 #B2763F #41B23F

square

#3F7BB2 #B03FB2 #B2763F #41B23F

split-complementary

#3F7BB2 #B23F41 #B2B03F

monochromatic

#1F3D58 #2F5C85 #3F7BB2 #6699C9 #93B7D9

Accessibility & contrast

On white

4.48

#3F7BB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.69

#3F7BB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7BB2

4.69:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7BB2	#FFFFFF	#000000	##000000
##3F7BB2	1.00	4.48	4.69	4.69
#FFFFFF	4.48	1.00	21.00	21.00
#000000	4.69	21.00	1.00	1.00
##000000	4.69	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#637DB4

Deuteranopia (green-blind)

#5372B1

Tritanopia (blue-blind)

#00888E

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3f7bb2;
/* rgb */ color: rgb(63, 123, 178);
/* oklch */ color: oklch(56.8% 0.106 248.4);

Tailwind

colors: {
  custom: {
    50: '#7fa0c9',
    500: '#3f7bb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f7bb2;
$custom-light: #7fa0c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7bb2",
  "rgb": {
    "r": 63,
    "g": 123,
    "b": 178
  },
  "hsl": {
    "h": 208.696,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.56765,
    "c": 0.10601,
    "h": 248.4
  },
  "luminance": 0.18437
}

Semantic roles & 50–950 ramp

primary

#3F7BB2

secondary

#C4A589

accent

#9150D7

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0E13

muted

#7C7E82

Preview Lab

Preview with #3F7BB2

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

Preview Lab → · Contrast checker → · Palette generator →