#3750BC#3750BC

#3750BC is a mid, vivid blue. Relative luminance 0.102; OKLCH L 47.7% C 0.172 H 269.0°. Best body text is #FFFFFF at 6.92:1 contrast (WCAG AA passes).

Color values

HEX	#3750BC
RGB	rgb(55, 80, 188)
HSL	hsl(229, 55%, 48%)
HSV	hsv(229, 71%, 74%)
CMYK	cmyk(70.7%, 57.4%, 0%, 26.3%)
CIE-LAB	lab(38.16, 27.54, -59.69)
CIE-LCH	lch(38.16, 65.74, 294.76°)
OKLab	oklab(47.74% -0.003 -0.172)
OKLCH	oklch(47.74% 0.172 269)
XYZ	xyz(13.5182, 10.1790, 48.8195)
Luminance	0.1018 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3750BC #BCA337

analogous

#3792BC #3750BC #6137BC

triadic

#3750BC #BC3750 #50BC37

tetradic

#3750BC #BC3792 #BCA337 #37BC61

square

#3750BC #BC3792 #BCA337 #37BC61

split-complementary

#3750BC #BC6137 #92BC37

monochromatic

#1B285D #293C8D #3750BC #6075D0 #8F9EDE

Accessibility & contrast

On white

6.92

#3750BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.04

#3750BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3750BC

6.92:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3750BC	#FFFFFF	#000000	##FFFFFF
##3750BC	1.00	6.92	3.04	6.92
#FFFFFF	6.92	1.00	21.00	1.00
#000000	3.04	21.00	1.00	21.00
##FFFFFF	6.92	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0060C0

Deuteranopia (green-blind)

#0054BA

Tritanopia (blue-blind)

#006B7E

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3750bc;
/* rgb */ color: rgb(55, 80, 188);
/* oklch */ color: oklch(47.7% 0.172 269.0);

Tailwind

colors: {
  custom: {
    50: '#7f80d1',
    500: '#3750bc',
    950: '#000000',
  },
}

SCSS

$custom: #3750bc;
$custom-light: #7f80d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3750bc",
  "rgb": {
    "r": 55,
    "g": 80,
    "b": 188
  },
  "hsl": {
    "h": 228.722,
    "s": 54.733,
    "l": 47.647
  },
  "oklch": {
    "l": 0.47739,
    "c": 0.17207,
    "h": 269
  },
  "luminance": 0.1018
}

Semantic roles & 50–950 ramp

primary

#3750BC

secondary

#C9BC86

accent

#C24ADE

background

#F8F7FC

surface

#F0EEF9

border

#CBC9D2

text

#0B0A14

muted

#7C7C82

Preview Lab

Preview with #3750BC

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

Preview Lab → · Contrast checker → · Palette generator →