#3D73CB#3D73CB

#3D73CB is a mid, vivid blue. Relative luminance 0.176; OKLCH L 56.4% C 0.148 H 259.7°. Best body text is #FFFFFF at 4.65:1 contrast (WCAG AA passes).

Color values

HEX	#3D73CB
RGB	rgb(61, 115, 203)
HSL	hsl(217, 58%, 52%)
HSV	hsv(217, 70%, 80%)
CMYK	cmyk(70%, 43.3%, 0%, 20.4%)
CIE-LAB	lab(48.96, 11.47, -50.94)
CIE-LCH	lch(48.96, 52.22, 282.69°)
OKLab	oklab(56.35% -0.0265 -0.1456)
OKLCH	oklch(56.35% 0.148 259.7)
XYZ	xyz(18.8308, 17.5634, 58.8860)
Luminance	0.1757 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D73CB #CB953D

analogous

#3DBACB #3D73CB #4E3DCB

triadic

#3D73CB #CB3D73 #73CB3D

tetradic

#3D73CB #CB3DBA #CB953D #3DCB4E

square

#3D73CB #CB3DBA #CB953D #3DCB4E

split-complementary

#3D73CB #CB4E3D #BACB3D

monochromatic

#1E3D70 #2B57A0 #3D73CB #6D96D8 #9EB9E5

Accessibility & contrast

On white

4.65

#3D73CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.51

#3D73CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3D73CB

4.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D73CB	#FFFFFF	#000000	##FFFFFF
##3D73CB	1.00	4.65	4.51	4.65
#FFFFFF	4.65	1.00	21.00	1.00
#000000	4.51	21.00	1.00	21.00
##FFFFFF	4.65	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#487BCE

Deuteranopia (green-blind)

#2F6EC9

Tritanopia (blue-blind)

#008795

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #3d73cb;
/* rgb */ color: rgb(61, 115, 203);
/* oklch */ color: oklch(56.4% 0.148 259.7);

Tailwind

colors: {
  custom: {
    50: '#839adb',
    500: '#3d73cb',
    950: '#000000',
  },
}

SCSS

$custom: #3d73cb;
$custom-light: #839adb;
$custom-dark: #000000;

JSON

{
  "hex": "#3d73cb",
  "rgb": {
    "r": 61,
    "g": 115,
    "b": 203
  },
  "hsl": {
    "h": 217.183,
    "s": 57.724,
    "l": 51.765
  },
  "oklch": {
    "l": 0.56353,
    "c": 0.14803,
    "h": 259.7
  },
  "luminance": 0.17565
}

Semantic roles & 50–950 ramp

primary

#3D73CB

secondary

#D1B993

accent

#A647E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3D73CB

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

Preview Lab → · Contrast checker → · Palette generator →