#3A57CB#3A57CB

#3A57CB is a mid, vivid blue. Relative luminance 0.120; OKLCH L 50.5% C 0.183 H 268.4°. Best body text is #FFFFFF at 6.17:1 contrast (WCAG AA passes).

Color values

HEX	#3A57CB
RGB	rgb(58, 87, 203)
HSL	hsl(228, 58%, 51%)
HSV	hsv(228, 71%, 80%)
CMYK	cmyk(71.4%, 57.1%, 0%, 20.4%)
CIE-LAB	lab(41.26, 28.87, -63.38)
CIE-LCH	lch(41.26, 69.64, 294.49°)
OKLab	oklab(50.45% -0.0052 -0.1827)
OKLCH	oklch(50.45% 0.183 268.4)
XYZ	xyz(15.9289, 12.0261, 57.9701)
Luminance	0.1203 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3A57CB #CBAE3A

analogous

#3A9FCB #3A57CB #653ACB

triadic

#3A57CB #CB3A57 #57CB3A

tetradic

#3A57CB #CB3A9F #CBAE3A #3ACB65

square

#3A57CB #CB3A9F #CBAE3A #3ACB65

split-complementary

#3A57CB #CB653A #9FCB3A

monochromatic

#1D2D6E #2A419E #3A57CB #6A80D8 #9BAAE5

Accessibility & contrast

On white

6.17

#3A57CB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.41

#3A57CB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3A57CB

6.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3A57CB	#FFFFFF	#000000	##FFFFFF
##3A57CB	1.00	6.17	3.41	6.17
#FFFFFF	6.17	1.00	21.00	1.00
#000000	3.41	21.00	1.00	21.00
##FFFFFF	6.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0068CF

Deuteranopia (green-blind)

#005BC9

Tritanopia (blue-blind)

#007488

Achromatopsia (no color)

#616161

Design tokens & code

CSS

--color: #3a57cb;
/* rgb */ color: rgb(58, 87, 203);
/* oklch */ color: oklch(50.5% 0.183 268.4);

Tailwind

colors: {
  custom: {
    50: '#8386dc',
    500: '#3a57cb',
    950: '#000000',
  },
}

SCSS

$custom: #3a57cb;
$custom-light: #8386dc;
$custom-dark: #000000;

JSON

{
  "hex": "#3a57cb",
  "rgb": {
    "r": 58,
    "g": 87,
    "b": 203
  },
  "hsl": {
    "h": 228,
    "s": 58.233,
    "l": 51.176
  },
  "oklch": {
    "l": 0.50453,
    "c": 0.18279,
    "h": 268.4
  },
  "luminance": 0.12028
}

Semantic roles & 50–950 ramp

primary

#3A57CB

secondary

#D0C490

accent

#C246E1

background

#F8F8FD

surface

#F0EFFB

border

#CBCAD4

text

#0C0B15

muted

#7D7C83

Preview Lab

Preview with #3A57CB

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

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