#3870B2#3870B2

#3870B2 is a mid, moderate cyan. Relative luminance 0.156; OKLCH L 53.9% C 0.120 H 254.1°. Best body text is #FFFFFF at 5.09:1 contrast (WCAG AA passes).

Color values

HEX	#3870B2
RGB	rgb(56, 112, 178)
HSL	hsl(212, 52%, 46%)
HSV	hsv(212, 69%, 70%)
CMYK	cmyk(68.5%, 37.1%, 0%, 30.2%)
CIE-LAB	lab(46.50, 3.52, -40.46)
CIE-LCH	lch(46.50, 40.61, 274.98°)
OKLab	oklab(53.93% -0.0329 -0.115)
OKLCH	oklch(53.93% 0.12 254.1)
XYZ	xyz(15.4580, 15.6418, 44.3154)
Luminance	0.1564 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3870B2 #B27A38

analogous

#38ADB2 #3870B2 #3D38B2

triadic

#3870B2 #B23870 #70B238

tetradic

#3870B2 #B238AD #B27A38 #38B23D

square

#3870B2 #B238AD #B27A38 #38B23D

split-complementary

#3870B2 #B23D38 #ADB238

monochromatic

#1B3555 #295383 #3870B2 #5C8FCC #8AAFDA

Accessibility & contrast

On white

5.09

#3870B2 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.13

#3870B2 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3870B2

5.09:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3870B2	#FFFFFF	#000000	##FFFFFF
##3870B2	1.00	5.09	4.13	5.09
#FFFFFF	5.09	1.00	21.00	1.00
#000000	4.13	21.00	1.00	21.00
##FFFFFF	5.09	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5274B5

Deuteranopia (green-blind)

#4169B1

Tritanopia (blue-blind)

#007F88

Achromatopsia (no color)

#6E6E6E

Design tokens & code

CSS

--color: #3870b2;
/* rgb */ color: rgb(56, 112, 178);
/* oklch */ color: oklch(53.9% 0.120 254.1);

Tailwind

colors: {
  custom: {
    50: '#7c98c9',
    500: '#3870b2',
    950: '#000000',
  },
}

SCSS

$custom: #3870b2;
$custom-light: #7c98c9;
$custom-dark: #000000;

JSON

{
  "hex": "#3870b2",
  "rgb": {
    "r": 56,
    "g": 112,
    "b": 178
  },
  "hsl": {
    "h": 212.459,
    "s": 52.137,
    "l": 45.882
  },
  "oklch": {
    "l": 0.53931,
    "c": 0.1196,
    "h": 254.1
  },
  "luminance": 0.15643
}

Semantic roles & 50–950 ramp

primary

#3870B2

secondary

#C5A681

accent

#9A4CDC

background

#F8F9FC

surface

#EFF2F8

border

#CACCD1

text

#0B0D13

muted

#7C7E82

Preview Lab

Preview with #3870B2

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

Preview Lab → · Contrast checker → · Palette generator →