#3758A0#3758A0

#3758A0 is a mid, vivid blue. Relative luminance 0.103; OKLCH L 47.3% C 0.123 H 263.8°. Best body text is #FFFFFF at 6.85:1 contrast (WCAG AA passes).

Color values

HEX	#3758A0
RGB	rgb(55, 88, 160)
HSL	hsl(221, 49%, 42%)
HSV	hsv(221, 66%, 63%)
CMYK	cmyk(65.6%, 45%, 0%, 37.3%)
CIE-LAB	lab(38.43, 12.04, -42.70)
CIE-LCH	lch(38.43, 44.37, 285.75°)
OKLab	oklab(47.32% -0.0132 -0.1219)
OKLCH	oklch(47.32% 0.123 263.8)
XYZ	xyz(11.4082, 10.3287, 34.6433)
Luminance	0.1033 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758A0 #A07F37

analogous

#378DA0 #3758A0 #4B37A0

triadic

#3758A0 #A03758 #58A037

tetradic

#3758A0 #A0378D #A07F37 #37A04B

square

#3758A0 #A0378D #A07F37 #37A04B

split-complementary

#3758A0 #A04B37 #8DA037

monochromatic

#182645 #273F72 #3758A0 #5175C3 #7F99D3

Accessibility & contrast

On white

6.85

#3758A0 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#3758A0 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758A0

6.85:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758A0	#FFFFFF	#000000	##FFFFFF
##3758A0	1.00	6.85	3.07	6.85
#FFFFFF	6.85	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.85	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#3660A3

Deuteranopia (green-blind)

#24569F

Tritanopia (blue-blind)

#006874

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3758a0;
/* rgb */ color: rgb(55, 88, 160);
/* oklch */ color: oklch(47.3% 0.123 263.8);

Tailwind

colors: {
  custom: {
    50: '#7986bc',
    500: '#3758a0',
    950: '#000000',
  },
}

SCSS

$custom: #3758a0;
$custom-light: #7986bc;
$custom-dark: #000000;

JSON

{
  "hex": "#3758a0",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 160
  },
  "hsl": {
    "h": 221.143,
    "s": 48.837,
    "l": 42.157
  },
  "oklch": {
    "l": 0.47324,
    "c": 0.12265,
    "h": 263.8
  },
  "luminance": 0.1033
}

Semantic roles & 50–950 ramp

primary

#3758A0

secondary

#BCA677

accent

#AD4FD8

background

#F7F8FB

surface

#EEEFF6

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #3758A0

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

Preview Lab → · Contrast checker → · Palette generator →