#3B70CB#3B70CB

#3B70CB is a mid, vivid blue. Relative luminance 0.168; OKLCH L 55.6% C 0.152 H 260.4°. Best body text is #FFFFFF at 4.81:1 contrast (WCAG AA passes).

Color values

HEX	#3B70CB
RGB	rgb(59, 112, 203)
HSL	hsl(218, 58%, 51%)
HSV	hsv(218, 71%, 80%)
CMYK	cmyk(70.9%, 44.8%, 0%, 20.4%)
CIE-LAB	lab(48.04, 13.06, -52.42)
CIE-LCH	lch(48.04, 54.02, 283.99°)
OKLab	oklab(55.62% -0.0253 -0.1501)
OKLCH	oklch(55.62% 0.152 260.4)
XYZ	xyz(18.3734, 16.8280, 58.7681)
Luminance	0.1683 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B70CB #CB963B

analogous

#3BB8CB #3B70CB #4E3BCB

triadic

#3B70CB #CB3B70 #70CB3B

tetradic

#3B70CB #CB3BB8 #CB963B #3BCB4E

square

#3B70CB #CB3BB8 #CB963B #3BCB4E

split-complementary

#3B70CB #CB4E3B #B8CB3B

monochromatic

#1D3B6E #2A559F #3B70CB #6B93D8 #9CB7E5

Accessibility & contrast

On white

4.81

#3B70CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#3B70CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B70CB

4.81:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B70CB	#FFFFFF	#000000	##FFFFFF
##3B70CB	1.00	4.81	4.37	4.81
#FFFFFF	4.81	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.81	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4279CE

Deuteranopia (green-blind)

#266CC9

Tritanopia (blue-blind)

#008593

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #3b70cb;
/* rgb */ color: rgb(59, 112, 203);
/* oklch */ color: oklch(55.6% 0.152 260.4);

Tailwind

colors: {
  custom: {
    50: '#8298db',
    500: '#3b70cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b70cb;
$custom-light: #8298db;
$custom-dark: #000000;

JSON

{
  "hex": "#3b70cb",
  "rgb": {
    "r": 59,
    "g": 112,
    "b": 203
  },
  "hsl": {
    "h": 217.917,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.55621,
    "c": 0.15217,
    "h": 260.4
  },
  "luminance": 0.1683
}

Semantic roles & 50–950 ramp

primary

#3B70CB

secondary

#D1B991

accent

#A847E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0D15

muted

#7D7E83

Preview Lab

Preview with #3B70CB

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

Preview Lab → · Contrast checker → · Palette generator →