#3771BD#3771BD

#3771BD is a mid, vivid cyan. Relative luminance 0.163; OKLCH L 54.8% C 0.134 H 256.2°. Best body text is #FFFFFF at 4.93:1 contrast (WCAG AA passes).

Color values

HEX	#3771BD
RGB	rgb(55, 113, 189)
HSL	hsl(214, 55%, 48%)
HSV	hsv(214, 71%, 74%)
CMYK	cmyk(70.9%, 40.2%, 0%, 25.9%)
CIE-LAB	lab(47.36, 6.74, -45.47)
CIE-LCH	lch(47.36, 45.97, 278.43°)
OKLab	oklab(54.79% -0.0319 -0.1297)
OKLCH	oklch(54.79% 0.134 256.2)
XYZ	xyz(16.6626, 16.2948, 50.4013)
Luminance	0.1630 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3771BD #BD8337

analogous

#37B4BD #3771BD #4037BD

triadic

#3771BD #BD3771 #71BD37

tetradic

#3771BD #BD37B4 #BD8337 #37BD40

square

#3771BD #BD37B4 #BD8337 #37BD40

split-complementary

#3771BD #BD4037 #B4BD37

monochromatic

#1B385E #29558E #3771BD #6091D1 #90B2DF

Accessibility & contrast

On white

4.93

#3771BD on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.26

#3771BD on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3771BD

4.93:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3771BD	#FFFFFF	#000000	##FFFFFF
##3771BD	1.00	4.93	4.26	4.93
#FFFFFF	4.93	1.00	21.00	1.00
#000000	4.26	21.00	1.00	21.00
##FFFFFF	4.93	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E77C0

Deuteranopia (green-blind)

#386BBB

Tritanopia (blue-blind)

#00838E

Achromatopsia (no color)

#707070

Design tokens & code

CSS

--color: #3771bd;
/* rgb */ color: rgb(55, 113, 189);
/* oklch */ color: oklch(54.8% 0.134 256.2);

Tailwind

colors: {
  custom: {
    50: '#7e99d1',
    500: '#3771bd',
    950: '#000000',
  },
}

SCSS

$custom: #3771bd;
$custom-light: #7e99d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3771bd",
  "rgb": {
    "r": 55,
    "g": 113,
    "b": 189
  },
  "hsl": {
    "h": 214.03,
    "s": 54.918,
    "l": 47.843
  },
  "oklch": {
    "l": 0.54786,
    "c": 0.13357,
    "h": 256.2
  },
  "luminance": 0.16297
}

Semantic roles & 50–950 ramp

primary

#3771BD

secondary

#C9AC86

accent

#9E4ADE

background

#F8F9FC

surface

#EFF2F9

border

#CACCD2

text

#0B0D14

muted

#7C7E82

Preview Lab

Preview with #3771BD

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

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