#3758A9#3758A9

#3758A9 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 47.9% C 0.136 H 265.0°. Best body text is #FFFFFF at 6.71:1 contrast (WCAG AA passes).

Color values

HEX	#3758A9
RGB	rgb(55, 88, 169)
HSL	hsl(223, 51%, 44%)
HSV	hsv(223, 67%, 66%)
CMYK	cmyk(67.5%, 47.9%, 0%, 33.7%)
CIE-LAB	lab(38.99, 15.34, -47.15)
CIE-LCH	lch(38.99, 49.58, 288.03°)
OKLab	oklab(47.94% -0.0117 -0.135)
OKLCH	oklch(47.94% 0.136 265)
XYZ	xyz(12.2242, 10.6551, 38.9408)
Luminance	0.1066 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3758A9 #A98837

analogous

#3791A9 #3758A9 #4F37A9

triadic

#3758A9 #A93758 #58A937

tetradic

#3758A9 #A93791 #A98837 #37A94F

square

#3758A9 #A93791 #A98837 #37A94F

split-complementary

#3758A9 #A94F37 #91A937

monochromatic

#19284D #28407B #3758A9 #5577C8 #849CD7

Accessibility & contrast

On white

6.71

#3758A9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.13

#3758A9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3758A9

6.71:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3758A9	#FFFFFF	#000000	##FFFFFF
##3758A9	1.00	6.71	3.13	6.71
#FFFFFF	6.71	1.00	21.00	1.00
#000000	3.13	21.00	1.00	21.00
##FFFFFF	6.71	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2E61AC

Deuteranopia (green-blind)

#1557A7

Tritanopia (blue-blind)

#006B78

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #3758a9;
/* rgb */ color: rgb(55, 88, 169);
/* oklch */ color: oklch(47.9% 0.136 265.0);

Tailwind

colors: {
  custom: {
    50: '#7b86c3',
    500: '#3758a9',
    950: '#000000',
  },
}

SCSS

$custom: #3758a9;
$custom-light: #7b86c3;
$custom-dark: #000000;

JSON

{
  "hex": "#3758a9",
  "rgb": {
    "r": 55,
    "g": 88,
    "b": 169
  },
  "hsl": {
    "h": 222.632,
    "s": 50.893,
    "l": 43.922
  },
  "oklch": {
    "l": 0.47942,
    "c": 0.13553,
    "h": 265
  },
  "luminance": 0.10656
}

Semantic roles & 50–950 ramp

primary

#3758A9

secondary

#C0AC7B

accent

#B24DDA

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #3758A9

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

Preview Lab → · Contrast checker → · Palette generator →