#3B58CB#3B58CB

#3B58CB is a mid, vivid blue. Relative luminance 0.122; OKLCH L 50.7% C 0.181 H 268.4°. Best body text is #FFFFFF at 6.10:1 contrast (WCAG AA passes).

Color values

HEX	#3B58CB
RGB	rgb(59, 88, 203)
HSL	hsl(228, 58%, 51%)
HSV	hsv(228, 71%, 80%)
CMYK	cmyk(70.9%, 56.7%, 0%, 20.4%)
CIE-LAB	lab(41.56, 28.36, -62.88)
CIE-LCH	lch(41.56, 68.98, 294.28°)
OKLab	oklab(50.69% -0.005 -0.1812)
OKLCH	oklch(50.69% 0.181 268.4)
XYZ	xyz(16.0691, 12.2194, 58.0001)
Luminance	0.1222 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3B58CB #CBAE3B

analogous

#3BA0CB #3B58CB #663BCB

triadic

#3B58CB #CB3B58 #58CB3B

tetradic

#3B58CB #CB3BA0 #CBAE3B #3BCB66

square

#3B58CB #CB3BA0 #CBAE3B #3BCB66

split-complementary

#3B58CB #CB663B #A0CB3B

monochromatic

#1D2E6E #2A429F #3B58CB #6B81D8 #9CAAE5

Accessibility & contrast

On white

6.10

#3B58CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.44

#3B58CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3B58CB

6.10:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3B58CB	#FFFFFF	#000000	##FFFFFF
##3B58CB	1.00	6.10	3.44	6.10
#FFFFFF	6.10	1.00	21.00	1.00
#000000	3.44	21.00	1.00	21.00
##FFFFFF	6.10	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0069CF

Deuteranopia (green-blind)

#005CC9

Tritanopia (blue-blind)

#007489

Achromatopsia (no color)

#626262

Design tokens & code

CSS

--color: #3b58cb;
/* rgb */ color: rgb(59, 88, 203);
/* oklch */ color: oklch(50.7% 0.181 268.4);

Tailwind

colors: {
  custom: {
    50: '#8386dc',
    500: '#3b58cb',
    950: '#000000',
  },
}

SCSS

$custom: #3b58cb;
$custom-light: #8386dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3b58cb",
  "rgb": {
    "r": 59,
    "g": 88,
    "b": 203
  },
  "hsl": {
    "h": 227.917,
    "s": 58.065,
    "l": 51.373
  },
  "oklch": {
    "l": 0.50694,
    "c": 0.18129,
    "h": 268.4
  },
  "luminance": 0.12221
}

Semantic roles & 50–950 ramp

primary

#3B58CB

secondary

#D1C491

accent

#C247E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3B58CB

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

Preview Lab → · Contrast checker → · Palette generator →