#3D74CB#3D74CB

#3D74CB is a mid, vivid blue. Relative luminance 0.178; OKLCH L 56.6% C 0.147 H 259.2°. Best body text is #FFFFFF at 4.61:1 contrast (WCAG AA passes).

Color values

HEX	#3D74CB
RGB	rgb(61, 116, 203)
HSL	hsl(217, 58%, 52%)
HSV	hsv(217, 70%, 80%)
CMYK	cmyk(70%, 42.9%, 0%, 20.4%)
CIE-LAB	lab(49.24, 10.85, -50.49)
CIE-LCH	lch(49.24, 51.65, 282.13°)
OKLab	oklab(56.57% -0.0274 -0.1443)
OKLCH	oklch(56.57% 0.147 259.2)
XYZ	xyz(18.9455, 17.7927, 58.9242)
Luminance	0.1779 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3D74CB #CB943D

analogous

#3DBBCB #3D74CB #4D3DCB

triadic

#3D74CB #CB3D74 #74CB3D

tetradic

#3D74CB #CB3DBB #CB943D #3DCB4D

square

#3D74CB #CB3DBB #CB943D #3DCB4D

split-complementary

#3D74CB #CB4D3D #BBCB3D

monochromatic

#1E3E70 #2B58A0 #3D74CB #6D97D8 #9EB9E5

Accessibility & contrast

On white

4.61

#3D74CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.56

#3D74CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3D74CB

4.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3D74CB	#FFFFFF	#000000	##FFFFFF
##3D74CB	1.00	4.61	4.56	4.61
#FFFFFF	4.61	1.00	21.00	1.00
#000000	4.56	21.00	1.00	21.00
##FFFFFF	4.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7CCE

Deuteranopia (green-blind)

#326FC9

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3d74cb;
/* rgb */ color: rgb(61, 116, 203);
/* oklch */ color: oklch(56.6% 0.147 259.2);

Tailwind

colors: {
  custom: {
    50: '#839bdb',
    500: '#3d74cb',
    950: '#000000',
  },
}

SCSS

$custom: #3d74cb;
$custom-light: #839bdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3d74cb",
  "rgb": {
    "r": 61,
    "g": 116,
    "b": 203
  },
  "hsl": {
    "h": 216.761,
    "s": 57.724,
    "l": 51.765
  },
  "oklch": {
    "l": 0.5657,
    "c": 0.14688,
    "h": 259.2
  },
  "luminance": 0.17795
}

Semantic roles & 50–950 ramp

primary

#3D74CB

secondary

#D1B993

accent

#A547E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3D74CB

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

Preview Lab → · Contrast checker → · Palette generator →