#3057BC#3057BC

#3057BC is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.8% C 0.165 H 264.9°. Best body text is #FFFFFF at 6.53:1 contrast (WCAG AA passes).

Color values

HEX	#3057BC
RGB	rgb(48, 87, 188)
HSL	hsl(223, 59%, 46%)
HSV	hsv(223, 74%, 74%)
CMYK	cmyk(74.5%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(39.70, 22.06, -57.20)
CIE-LCH	lch(39.70, 61.31, 291.09°)
OKLab	oklab(48.81% -0.0147 -0.1647)
OKLCH	oklch(48.81% 0.165 264.9)
XYZ	xyz(13.7010, 11.0741, 48.9826)
Luminance	0.1108 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#3057BC #BC9530

analogous

#309DBC #3057BC #4F30BC

triadic

#3057BC #BC3057 #57BC30

tetradic

#3057BC #BC309D #BC9530 #30BC4F

square

#3057BC #BC309D #BC9530 #30BC4F

split-complementary

#3057BC #BC4F30 #9DBC30

monochromatic

#172A5A #24408B #3057BC #5579D4 #869FE0

Accessibility & contrast

On white

6.53

#3057BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.22

#3057BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #3057BC

6.53:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##3057BC	#FFFFFF	#000000	##FFFFFF
##3057BC	1.00	6.53	3.22	6.53
#FFFFFF	6.53	1.00	21.00	1.00
#000000	3.22	21.00	1.00	21.00
##FFFFFF	6.53	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0664C0

Deuteranopia (green-blind)

#0057BA

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5E5E5E

Design tokens & code

CSS

--color: #3057bc;
/* rgb */ color: rgb(48, 87, 188);
/* oklch */ color: oklch(48.8% 0.165 264.9);

Tailwind

colors: {
  custom: {
    50: '#7c85d1',
    500: '#3057bc',
    950: '#000000',
  },
}

SCSS

$custom: #3057bc;
$custom-light: #7c85d1;
$custom-dark: #000000;

JSON

{
  "hex": "#3057bc",
  "rgb": {
    "r": 48,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 223.286,
    "s": 59.322,
    "l": 46.275
  },
  "oklch": {
    "l": 0.48813,
    "c": 0.1654,
    "h": 264.9
  },
  "luminance": 0.11076
}

Semantic roles & 50–950 ramp

primary

#3057BC

secondary

#CAB57E

accent

#B745E3

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #3057BC

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

Preview Lab → · Contrast checker → · Palette generator →