#3758B7#3758B7

#3758B7 is a mid, vivid blue. Relative luminance 0.112; OKLCH L 49.0% C 0.155 H 266.3°. Best body text is #FFFFFF at 6.48:1 contrast (WCAG AA passes).

Color values

HEX	#3758B7
RGB	rgb(55, 88, 183)
HSL	hsl(225, 54%, 47%)
HSV	hsv(225, 70%, 72%)
CMYK	cmyk(69.9%, 51.9%, 0%, 28.2%)
CIE-LAB	lab(39.93, 20.50, -53.90)
CIE-LCH	lch(39.93, 57.66, 290.82°)
OKLab	oklab(48.96% -0.01 -0.1549)
OKLCH	oklch(48.96% 0.155 266.3)
XYZ	xyz(13.6095, 11.2092, 46.2369)
Luminance	0.1121 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758B7 #B79637

analogous

#3798B7 #3758B7 #5637B7

triadic

#3758B7 #B73758 #58B737

tetradic

#3758B7 #B73798 #B79637 #37B756

square

#3758B7 #B73798 #B79637 #37B756

split-complementary

#3758B7 #B75637 #98B737

monochromatic

#1B2B59 #294188 #3758B7 #5D7ACE #8CA1DC

Accessibility & contrast

On white

6.48

#3758B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.24

#3758B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758B7

6.48:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758B7	#FFFFFF	#000000	##FFFFFF
##3758B7	1.00	6.48	3.24	6.48
#FFFFFF	6.48	1.00	21.00	1.00
#000000	3.24	21.00	1.00	21.00
##FFFFFF	6.48	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1C64BA

Deuteranopia (green-blind)

#0059B5

Tritanopia (blue-blind)

#006F7F

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3758b7;
/* rgb */ color: rgb(55, 88, 183);
/* oklch */ color: oklch(49.0% 0.155 266.3);

Tailwind

colors: {
  custom: {
    50: '#7d86cd',
    500: '#3758b7',
    950: '#000000',
  },
}

SCSS

$custom: #3758b7;
$custom-light: #7d86cd;
$custom-dark: #000000;

JSON

{
  "hex": "#3758b7",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 183
  },
  "hsl": {
    "h": 224.531,
    "s": 53.782,
    "l": 46.667
  },
  "oklch": {
    "l": 0.48956,
    "c": 0.15519,
    "h": 266.3
  },
  "luminance": 0.11211
}

Semantic roles & 50–950 ramp

primary

#3758B7

secondary

#C7B583

accent

#B74BDD

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B13

muted

#7C7C82

Preview Lab

Preview with #3758B7

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

Preview Lab → · Contrast checker → · Palette generator →