#3C59CB#3C59CB

#3C59CB is a mid, vivid blue. Relative luminance 0.124; OKLCH L 50.9% C 0.180 H 268.4°. Best body text is #FFFFFF at 6.03:1 contrast (WCAG AA passes).

Color values

HEX	#3C59CB
RGB	rgb(60, 89, 203)
HSL	hsl(228, 58%, 52%)
HSV	hsv(228, 70%, 80%)
CMYK	cmyk(70.4%, 56.2%, 0%, 20.4%)
CIE-LAB	lab(41.87, 27.85, -62.38)
CIE-LCH	lch(41.87, 68.32, 294.06°)
OKLab	oklab(50.94% -0.0049 -0.1797)
OKLCH	oklch(50.94% 0.18 268.4)
XYZ	xyz(16.2116, 12.4156, 58.0304)
Luminance	0.1242 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3C59CB #CBAE3C

analogous

#3CA1CB #3C59CB #673CCB

triadic

#3C59CB #CB3C59 #59CB3C

tetradic

#3C59CB #CB3CA1 #CBAE3C #3CCB67

square

#3C59CB #CB3CA1 #CBAE3C #3CCB67

split-complementary

#3C59CB #CB673C #A1CB3C

monochromatic

#1E2E6F #2A429F #3C59CB #6C82D8 #9DABE5

Accessibility & contrast

On white

6.03

#3C59CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.48

#3C59CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3C59CB

6.03:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3C59CB	#FFFFFF	#000000	##FFFFFF
##3C59CB	1.00	6.03	3.48	6.03
#FFFFFF	6.03	1.00	21.00	1.00
#000000	3.48	21.00	1.00	21.00
##FFFFFF	6.03	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#006ACF

Deuteranopia (green-blind)

#005CC9

Tritanopia (blue-blind)

#007589

Achromatopsia (no color)

#636363

Design tokens & code

CSS

--color: #3c59cb;
/* rgb */ color: rgb(60, 89, 203);
/* oklch */ color: oklch(50.9% 0.180 268.4);

Tailwind

colors: {
  custom: {
    50: '#8487dc',
    500: '#3c59cb',
    950: '#000000',
  },
}

SCSS

$custom: #3c59cb;
$custom-light: #8487dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3c59cb",
  "rgb": {
    "r": 60,
    "g": 89,
    "b": 203
  },
  "hsl": {
    "h": 227.832,
    "s": 57.895,
    "l": 51.569
  },
  "oklch": {
    "l": 0.50937,
    "c": 0.17978,
    "h": 268.4
  },
  "luminance": 0.12417
}

Semantic roles & 50–950 ramp

primary

#3C59CB

secondary

#D1C492

accent

#C247E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3C59CB

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

Preview Lab → · Contrast checker → · Palette generator →