#3A74CB#3A74CB

#3A74CB is a mid, vivid blue. Relative luminance 0.177; OKLCH L 56.5% C 0.148 H 258.5°. Best body text is #FFFFFF at 4.63:1 contrast (WCAG AA passes).

Color values

HEX	#3A74CB
RGB	rgb(58, 116, 203)
HSL	hsl(216, 58%, 51%)
HSV	hsv(216, 71%, 80%)
CMYK	cmyk(71.4%, 42.9%, 0%, 20.4%)
CIE-LAB	lab(49.13, 10.41, -50.68)
CIE-LCH	lch(49.13, 51.74, 281.61°)
OKLab	oklab(56.45% -0.0296 -0.1449)
OKLCH	oklch(56.45% 0.148 258.5)
XYZ	xyz(18.7659, 17.7001, 58.9158)
Luminance	0.1770 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A74CB #CB913A

analogous

#3ABCCB #3A74CB #483ACB

triadic

#3A74CB #CB3A74 #74CB3A

tetradic

#3A74CB #CB3ABC #CB913A #3ACB48

square

#3A74CB #CB3ABC #CB913A #3ACB48

split-complementary

#3A74CB #CB483A #BCCB3A

monochromatic

#1D3D6E #2A589E #3A74CB #6A96D8 #9BB8E5

Accessibility & contrast

On white

4.63

#3A74CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.54

#3A74CB on #000000

AA ✓AA large ✓AAA ✗

Best text color

#FFFFFF on #3A74CB

4.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A74CB	#FFFFFF	#000000	##FFFFFF
##3A74CB	1.00	4.63	4.54	4.63
#FFFFFF	4.63	1.00	21.00	1.00
#000000	4.54	21.00	1.00	21.00
##FFFFFF	4.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#4A7CCE

Deuteranopia (green-blind)

#306FC9

Tritanopia (blue-blind)

#008895

Achromatopsia (no color)

#757575

Design tokens & code

CSS

--color: #3a74cb;
/* rgb */ color: rgb(58, 116, 203);
/* oklch */ color: oklch(56.5% 0.148 258.5);

Tailwind

colors: {
  custom: {
    50: '#829bdb',
    500: '#3a74cb',
    950: '#000000',
  },
}

SCSS

$custom: #3a74cb;
$custom-light: #829bdb;
$custom-dark: #000000;

JSON

{
  "hex": "#3a74cb",
  "rgb": {
    "r": 58,
    "g": 116,
    "b": 203
  },
  "hsl": {
    "h": 216,
    "s": 58.233,
    "l": 51.176
  },
  "oklch": {
    "l": 0.56451,
    "c": 0.14789,
    "h": 258.5
  },
  "luminance": 0.17702
}

Semantic roles & 50–950 ramp

primary

#3A74CB

secondary

#D0B790

accent

#A346E1

background

#F8F9FD

surface

#F0F2FB

border

#CBCCD4

text

#0C0E15

muted

#7D7E83

Preview Lab

Preview with #3A74CB

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

Preview Lab → · Contrast checker → · Palette generator →