#3787B5#3787B5

#3787B5 is a mid, moderate cyan. Relative luminance 0.215; OKLCH L 59.5% C 0.104 H 237.5°. Best body text is #000000 at 5.30:1 contrast (WCAG AA passes).

Color values

HEX	#3787B5
RGB	rgb(55, 135, 181)
HSL	hsl(202, 53%, 46%)
HSV	hsv(202, 70%, 71%)
CMYK	cmyk(69.6%, 25.4%, 0%, 29%)
CIE-LAB	lab(53.46, -9.25, -31.25)
CIE-LCH	lch(53.46, 32.59, 253.51°)
OKLab	oklab(59.46% -0.056 -0.088)
OKLCH	oklch(59.46% 0.104 237.5)
XYZ	xyz(18.5768, 21.4743, 46.8730)
Luminance	0.2148 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3787B5 #B56537

analogous

#37B5A4 #3787B5 #3748B5

triadic

#3787B5 #B53787 #87B537

tetradic

#3787B5 #A437B5 #B56537 #48B537

square

#3787B5 #A437B5 #B56537 #48B537

split-complementary

#3787B5 #B53748 #B5A437

monochromatic

#1A4157 #296486 #3787B5 #5CA4CD #8BBEDC

Accessibility & contrast

On white

3.97

#3787B5 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.30

#3787B5 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3787B5

5.30:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3787B5	#FFFFFF	#000000	##000000
##3787B5	1.00	3.97	5.30	5.30
#FFFFFF	3.97	1.00	21.00	21.00
#000000	5.30	21.00	1.00	1.00
##000000	5.30	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7187B7

Deuteranopia (green-blind)

#607AB4

Tritanopia (blue-blind)

#009397

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #3787b5;
/* rgb */ color: rgb(55, 135, 181);
/* oklch */ color: oklch(59.5% 0.104 237.5);

Tailwind

colors: {
  custom: {
    50: '#7da9cb',
    500: '#3787b5',
    950: '#000000',
  },
}

SCSS

$custom: #3787b5;
$custom-light: #7da9cb;
$custom-dark: #000000;

JSON

{
  "hex": "#3787b5",
  "rgb": {
    "r": 55,
    "g": 135,
    "b": 181
  },
  "hsl": {
    "h": 201.905,
    "s": 53.39,
    "l": 46.275
  },
  "oklch": {
    "l": 0.59456,
    "c": 0.10427,
    "h": 237.5
  },
  "luminance": 0.21476
}

Semantic roles & 50–950 ramp

primary

#3787B5

secondary

#C69B82

accent

#804BDD

background

#F8FAFC

surface

#EFF4F8

border

#CACED1

text

#0B1013

muted

#7C7F82

Preview Lab

Preview with #3787B5

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

Preview Lab → · Contrast checker → · Palette generator →