#3057A4#3057A4

#3057A4 is a mid, vivid blue. Relative luminance 0.101; OKLCH L 47.0% C 0.132 H 262.3°. Best body text is #FFFFFF at 6.94:1 contrast (WCAG AA passes).

Color values

HEX	#3057A4
RGB	rgb(48, 87, 164)
HSL	hsl(220, 55%, 42%)
HSV	hsv(220, 71%, 64%)
CMYK	cmyk(70.7%, 47%, 0%, 35.7%)
CIE-LAB	lab(38.06, 13.01, -45.68)
CIE-LCH	lch(38.06, 47.50, 285.89°)
OKLab	oklab(47.04% -0.0176 -0.1309)
OKLCH	oklch(47.04% 0.132 262.3)
XYZ	xyz(11.3256, 10.1239, 36.4720)
Luminance	0.1013 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3057A4 #A47D30

analogous

#3091A4 #3057A4 #4330A4

triadic

#3057A4 #A43057 #57A430

tetradic

#3057A4 #A43091 #A47D30 #30A443

square

#3057A4 #A43091 #A47D30 #30A443

split-complementary

#3057A4 #A44330 #91A430

monochromatic

#142545 #223E75 #3057A4 #4873C9 #7797D7

Accessibility & contrast

On white

6.94

#3057A4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.03

#3057A4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3057A4

6.94:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3057A4	#FFFFFF	#000000	##FFFFFF
##3057A4	1.00	6.94	3.03	6.94
#FFFFFF	6.94	1.00	21.00	1.00
#000000	3.03	21.00	1.00	21.00
##FFFFFF	6.94	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2F5FA7

Deuteranopia (green-blind)

#1655A2

Tritanopia (blue-blind)

#006975

Achromatopsia (no color)

#5A5A5A

Design tokens & code

CSS

--color: #3057a4;
/* rgb */ color: rgb(48, 87, 164);
/* oklch */ color: oklch(47.0% 0.132 262.3);

Tailwind

colors: {
  custom: {
    50: '#7785bf',
    500: '#3057a4',
    950: '#000000',
  },
}

SCSS

$custom: #3057a4;
$custom-light: #7785bf;
$custom-dark: #000000;

JSON

{
  "hex": "#3057a4",
  "rgb": {
    "r": 48,
    "g": 87,
    "b": 164
  },
  "hsl": {
    "h": 219.828,
    "s": 54.717,
    "l": 41.569
  },
  "oklch": {
    "l": 0.47038,
    "c": 0.13204,
    "h": 262.3
  },
  "luminance": 0.10125
}

Semantic roles & 50–950 ramp

primary

#3057A4

secondary

#BFA570

accent

#AC4ADE

background

#F7F8FB

surface

#EEEFF7

border

#C9CAD0

text

#0A0B12

muted

#7C7C81

Preview Lab

Preview with #3057A4

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

Preview Lab → · Contrast checker → · Palette generator →