#3F7CB2#3F7CB2

#3F7CB2 is a mid, moderate cyan. Relative luminance 0.187; OKLCH L 57.0% C 0.105 H 247.5°. Best body text is #000000 at 4.74:1 contrast (WCAG AA passes).

Color values

HEX	#3F7CB2
RGB	rgb(63, 124, 178)
HSL	hsl(208, 48%, 47%)
HSV	hsv(208, 65%, 70%)
CMYK	cmyk(64.6%, 30.3%, 0%, 30.2%)
CIE-LAB	lab(50.32, -2.54, -34.42)
CIE-LCH	lch(50.32, 34.52, 265.78°)
OKLab	oklab(57% -0.0402 -0.0972)
OKLCH	oklch(57% 0.105 247.5)
XYZ	xyz(17.2904, 18.6847, 44.8061)
Luminance	0.1869 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3F7CB2 #B2753F

analogous

#3FB2AF #3F7CB2 #3F42B2

triadic

#3F7CB2 #B23F7C #7CB23F

tetradic

#3F7CB2 #AF3FB2 #B2753F #42B23F

square

#3F7CB2 #AF3FB2 #B2753F #42B23F

split-complementary

#3F7CB2 #B23F42 #B2AF3F

monochromatic

#1F3D58 #2F5D85 #3F7CB2 #669AC9 #93B8D9

Accessibility & contrast

On white

4.43

#3F7CB2 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.74

#3F7CB2 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3F7CB2

4.74:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3F7CB2	#FFFFFF	#000000	##000000
##3F7CB2	1.00	4.43	4.74	4.74
#FFFFFF	4.43	1.00	21.00	21.00
#000000	4.74	21.00	1.00	1.00
##000000	4.74	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#647EB4

Deuteranopia (green-blind)

#5573B1

Tritanopia (blue-blind)

#00898F

Achromatopsia (no color)

#787878

Design tokens & code

CSS

--color: #3f7cb2;
/* rgb */ color: rgb(63, 124, 178);
/* oklch */ color: oklch(57.0% 0.105 247.5);

Tailwind

colors: {
  custom: {
    50: '#7fa1c9',
    500: '#3f7cb2',
    950: '#000000',
  },
}

SCSS

$custom: #3f7cb2;
$custom-light: #7fa1c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3f7cb2",
  "rgb": {
    "r": 63,
    "g": 124,
    "b": 178
  },
  "hsl": {
    "h": 208.174,
    "s": 47.718,
    "l": 47.255
  },
  "oklch": {
    "l": 0.56998,
    "c": 0.10515,
    "h": 247.5
  },
  "luminance": 0.18686
}

Semantic roles & 50–950 ramp

primary

#3F7CB2

secondary

#C4A589

accent

#9050D7

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0F13

muted

#7C7E82

Preview Lab

Preview with #3F7CB2

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

Preview Lab → · Contrast checker → · Palette generator →