#3787B7#3787B7

#3787B7 is a mid, moderate cyan. Relative luminance 0.216; OKLCH L 59.6% C 0.106 H 238.7°. Best body text is #000000 at 5.31:1 contrast (WCAG AA passes).

Color values

HEX	#3787B7
RGB	rgb(55, 135, 183)
HSL	hsl(203, 54%, 47%)
HSV	hsv(203, 70%, 72%)
CMYK	cmyk(69.9%, 26.2%, 0%, 28.2%)
CIE-LAB	lab(53.55, -8.56, -32.25)
CIE-LCH	lch(53.55, 33.37, 255.13°)
OKLab	oklab(59.56% -0.0553 -0.0909)
OKLCH	oklch(59.56% 0.106 238.7)
XYZ	xyz(18.7834, 21.5570, 47.9616)
Luminance	0.2156 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3787B7 #B76737

analogous

#37B7A7 #3787B7 #3747B7

triadic

#3787B7 #B73787 #87B737

tetradic

#3787B7 #A737B7 #B76737 #47B737

square

#3787B7 #A737B7 #B76737 #47B737

split-complementary

#3787B7 #B73747 #B7A737

monochromatic

#1B4259 #296488 #3787B7 #5DA4CE #8CBEDC

Accessibility & contrast

On white

3.95

#3787B7 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.31

#3787B7 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3787B7

5.31:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3787B7	#FFFFFF	#000000	##000000
##3787B7	1.00	3.95	5.31	5.31
#FFFFFF	3.95	1.00	21.00	21.00
#000000	5.31	21.00	1.00	1.00
##000000	5.31	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7187B9

Deuteranopia (green-blind)

#5F7AB6

Tritanopia (blue-blind)

#009397

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3787b7;
/* rgb */ color: rgb(55, 135, 183);
/* oklch */ color: oklch(59.6% 0.106 238.7);

Tailwind

colors: {
  custom: {
    50: '#7da9cc',
    500: '#3787b7',
    950: '#000000',
  },
}

SCSS

$custom: #3787b7;
$custom-light: #7da9cc;
$custom-dark: #000000;

JSON

{
  "hex": "#3787b7",
  "rgb": {
    "r": 55,
    "g": 135,
    "b": 183
  },
  "hsl": {
    "h": 202.5,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.59556,
    "c": 0.10638,
    "h": 238.7
  },
  "luminance": 0.21559
}

Semantic roles & 50–950 ramp

primary

#3787B7

secondary

#C79C83

accent

#824BDD

background

#F8FAFC

surface

#EFF4F9

border

#CACED2

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3787B7

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

Preview Lab → · Contrast checker → · Palette generator →