#3D75CB#3D75CB

#3D75CB is a mid, vivid blue. Relative luminance 0.180; OKLCH L 56.8% C 0.146 H 258.8°. Best body text is #000000 at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3D75CB
RGB	rgb(61, 117, 203)
HSL	hsl(216, 58%, 52%)
HSV	hsv(216, 70%, 80%)
CMYK	cmyk(70%, 42.4%, 0%, 20.4%)
CIE-LAB	lab(49.53, 10.23, -50.04)
CIE-LCH	lch(49.53, 51.08, 281.55°)
OKLab	oklab(56.79% -0.0283 -0.143)
OKLCH	oklch(56.79% 0.146 258.8)
XYZ	xyz(19.0614, 18.0245, 58.9628)
Luminance	0.1803 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D75CB #CB933D

analogous

#3DBCCB #3D75CB #4C3DCB

triadic

#3D75CB #CB3D75 #75CB3D

tetradic

#3D75CB #CB3DBC #CB933D #3DCB4C

square

#3D75CB #CB3DBC #CB933D #3DCB4C

split-complementary

#3D75CB #CB4C3D #BCCB3D

monochromatic

#1E3E70 #2B59A0 #3D75CB #6D97D8 #9EBAE5

Accessibility & contrast

On white

4.56

#3D75CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.61

#3D75CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #3D75CB

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D75CB	#FFFFFF	#000000	##000000
##3D75CB	1.00	4.56	4.61	4.61
#FFFFFF	4.56	1.00	21.00	21.00
#000000	4.61	21.00	1.00	1.00
##000000	4.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#4C7DCE

Deuteranopia (green-blind)

#3470C9

Tritanopia (blue-blind)

#008996

Achromatopsia (no color)

#767676

Design tokens & code

CSS

--color: #3d75cb;
/* rgb */ color: rgb(61, 117, 203);
/* oklch */ color: oklch(56.8% 0.146 258.8);

Tailwind

colors: {
  custom: {
    50: '#839cdb',
    500: '#3d75cb',
    950: '#000000',
  },
}

SCSS

$custom: #3d75cb;
$custom-light: #839cdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3d75cb",
  "rgb": {
    "r": 61,
    "g": 117,
    "b": 203
  },
  "hsl": {
    "h": 216.338,
    "s": 57.724,
    "l": 51.765
  },
  "oklch": {
    "l": 0.56788,
    "c": 0.14574,
    "h": 258.8
  },
  "luminance": 0.18026
}

Semantic roles & 50–950 ramp

primary

#3D75CB

secondary

#D1B893

accent

#A447E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3D75CB

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

Preview Lab → · Contrast checker → · Palette generator →