#3B71CB#3B71CB

#3B71CB is a mid, vivid blue. Relative luminance 0.171; OKLCH L 55.8% C 0.151 H 260.0°. Best body text is #FFFFFF at 4.76:1 contrast (WCAG AA passes).

Color values

HEX	#3B71CB
RGB	rgb(59, 113, 203)
HSL	hsl(218, 58%, 51%)
HSV	hsv(218, 71%, 80%)
CMYK	cmyk(70.9%, 44.3%, 0%, 20.4%)
CIE-LAB	lab(48.32, 12.43, -51.97)
CIE-LCH	lch(48.32, 53.44, 283.45°)
OKLab	oklab(55.84% -0.0262 -0.1487)
OKLCH	oklch(55.84% 0.151 260)
XYZ	xyz(18.4844, 17.0499, 58.8051)
Luminance	0.1705 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B71CB #CB953B

analogous

#3BB9CB #3B71CB #4D3BCB

triadic

#3B71CB #CB3B71 #71CB3B

tetradic

#3B71CB #CB3BB9 #CB953B #3BCB4D

square

#3B71CB #CB3BB9 #CB953B #3BCB4D

split-complementary

#3B71CB #CB4D3B #B9CB3B

monochromatic

#1D3C6E #2A569F #3B71CB #6B94D8 #9CB7E5

Accessibility & contrast

On white

4.76

#3B71CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.41

#3B71CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B71CB

4.76:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B71CB	#FFFFFF	#000000	##FFFFFF
##3B71CB	1.00	4.76	4.41	4.76
#FFFFFF	4.76	1.00	21.00	1.00
#000000	4.41	21.00	1.00	21.00
##FFFFFF	4.76	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#447ACE

Deuteranopia (green-blind)

#296DC9

Tritanopia (blue-blind)

#008694

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #3b71cb;
/* rgb */ color: rgb(59, 113, 203);
/* oklch */ color: oklch(55.8% 0.151 260.0);

Tailwind

colors: {
  custom: {
    50: '#8299db',
    500: '#3b71cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b71cb;
$custom-light: #8299db;
$custom-dark: #000000;

JSON

{
  "hex": "#3b71cb",
  "rgb": {
    "r": 59,
    "g": 113,
    "b": 203
  },
  "hsl": {
    "h": 217.5,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.55837,
    "c": 0.15101,
    "h": 260
  },
  "luminance": 0.17052
}

Semantic roles & 50–950 ramp

primary

#3B71CB

secondary

#D1B991

accent

#A747E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3B71CB

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

Preview Lab → · Contrast checker → · Palette generator →