#3B74CB#3B74CB

#3B74CB is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.148 H 258.7°. Best body text is #FFFFFF at 4.62:1 contrast (WCAG AA passes).

Color values

HEX	#3B74CB
RGB	rgb(59, 116, 203)
HSL	hsl(216, 58%, 51%)
HSV	hsv(216, 71%, 80%)
CMYK	cmyk(70.9%, 42.9%, 0%, 20.4%)
CIE-LAB	lab(49.17, 10.56, -50.62)
CIE-LCH	lch(49.17, 51.71, 281.78°)
OKLab	oklab(56.49% -0.0289 -0.1447)
OKLCH	oklch(56.49% 0.148 258.7)
XYZ	xyz(18.8246, 17.7304, 58.9185)
Luminance	0.1773 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B74CB #CB923B

analogous

#3BBCCB #3B74CB #4A3BCB

triadic

#3B74CB #CB3B74 #74CB3B

tetradic

#3B74CB #CB3BBC #CB923B #3BCB4A

square

#3B74CB #CB3BBC #CB923B #3BCB4A

split-complementary

#3B74CB #CB4A3B #BCCB3B

monochromatic

#1D3D6E #2A589F #3B74CB #6B96D8 #9CB9E5

Accessibility & contrast

On white

4.62

#3B74CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.55

#3B74CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3B74CB

4.62:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B74CB	#FFFFFF	#000000	##FFFFFF
##3B74CB	1.00	4.62	4.55	4.62
#FFFFFF	4.62	1.00	21.00	1.00
#000000	4.55	21.00	1.00	21.00
##FFFFFF	4.62	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7CCE

Deuteranopia (green-blind)

#316FC9

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3b74cb;
/* rgb */ color: rgb(59, 116, 203);
/* oklch */ color: oklch(56.5% 0.148 258.7);

Tailwind

colors: {
  custom: {
    50: '#829bdb',
    500: '#3b74cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b74cb;
$custom-light: #829bdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3b74cb",
  "rgb": {
    "r": 59,
    "g": 116,
    "b": 203
  },
  "hsl": {
    "h": 216.25,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.5649,
    "c": 0.14755,
    "h": 258.7
  },
  "luminance": 0.17732
}

Semantic roles & 50–950 ramp

primary

#3B74CB

secondary

#D1B891

accent

#A447E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3B74CB

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

Preview Lab → · Contrast checker → · Palette generator →