#3777CC#3777CC

#3777CC is a mid, vivid cyan. Relative luminance 0.184; OKLCH L 57.1% C 0.147 H 256.5°. Best body text is #000000 at 4.67:1 contrast (WCAG AA passes).

Color values

HEX	#3777CC
RGB	rgb(55, 119, 204)
HSL	hsl(214, 59%, 51%)
HSV	hsv(214, 73%, 80%)
CMYK	cmyk(73%, 41.7%, 0%, 20%)
CIE-LAB	lab(49.93, 8.50, -49.97)
CIE-LCH	lch(49.93, 50.69, 279.65°)
OKLab	oklab(57.06% -0.0342 -0.1428)
OKLCH	oklch(57.06% 0.147 256.5)
XYZ	xyz(19.0675, 18.3634, 59.6546)
Luminance	0.1837 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3777CC #CC8C37

analogous

#37C2CC #3777CC #4137CC

triadic

#3777CC #CC3777 #77CC37

tetradic

#3777CC #CC37C2 #CC8C37 #37CC41

square

#3777CC #CC37C2 #CC8C37 #37CC41

split-complementary

#3777CC #CC4137 #C2CC37

monochromatic

#1C3F6D #285B9E #3777CC #6898D8 #99B9E5

Accessibility & contrast

On white

4.49

#3777CC on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

4.67

#3777CC on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3777CC

4.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3777CC	#FFFFFF	#000000	##000000
##3777CC	1.00	4.49	4.67	4.67
#FFFFFF	4.49	1.00	21.00	21.00
#000000	4.67	21.00	1.00	1.00
##000000	4.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4E7ECF

Deuteranopia (green-blind)

#3570CA

Tritanopia (blue-blind)

#008B97

Achromatopsia (no color)

#777777

Design tokens & code

CSS

--color: #3777cc;
/* rgb */ color: rgb(55, 119, 204);
/* oklch */ color: oklch(57.1% 0.147 256.5);

Tailwind

colors: {
  custom: {
    50: '#819ddc',
    500: '#3777cc',
    950: '#000000',
  },
}

SCSS

$custom: #3777cc;
$custom-light: #819ddc;
$custom-dark: #000000;

JSON

{
  "hex": "#3777cc",
  "rgb": {
    "r": 55,
    "g": 119,
    "b": 204
  },
  "hsl": {
    "h": 214.228,
    "s": 59.363,
    "l": 50.784
  },
  "oklch": {
    "l": 0.57063,
    "c": 0.14684,
    "h": 256.5
  },
  "luminance": 0.18366
}

Semantic roles & 50–950 ramp

primary

#3777CC

secondary

#D0B48E

accent

#9F45E3

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3777CC

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

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