#2F57BC#2F57BC

#2F57BC is a mid, vivid blue. Relative luminance 0.111; OKLCH L 48.8% C 0.166 H 264.6°. Best body text is #FFFFFF at 6.54:1 contrast (WCAG AA passes).

Color values

HEX	#2F57BC
RGB	rgb(47, 87, 188)
HSL	hsl(223, 60%, 46%)
HSV	hsv(223, 75%, 74%)
CMYK	cmyk(75%, 53.7%, 0%, 26.3%)
CIE-LAB	lab(39.66, 21.93, -57.27)
CIE-LCH	lch(39.66, 61.33, 290.96°)
OKLab	oklab(48.77% -0.0155 -0.165)
OKLCH	oklch(48.77% 0.166 264.6)
XYZ	xyz(13.6544, 11.0501, 48.9805)
Luminance	0.1105 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F57BC #BC942F

analogous

#2F9DBC #2F57BC #4D2FBC

triadic

#2F57BC #BC2F57 #57BC2F

tetradic

#2F57BC #BC2F9D #BC942F #2FBC4D

square

#2F57BC #BC2F9D #BC942F #2FBC4D

split-complementary

#2F57BC #BC4D2F #9DBC2F

monochromatic

#172A5A #23408B #2F57BC #5478D4 #859FE0

Accessibility & contrast

On white

6.54

#2F57BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.21

#2F57BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F57BC

6.54:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F57BC	#FFFFFF	#000000	##FFFFFF
##2F57BC	1.00	6.54	3.21	6.54
#FFFFFF	6.54	1.00	21.00	1.00
#000000	3.21	21.00	1.00	21.00
##FFFFFF	6.54	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0564C0

Deuteranopia (green-blind)

#0057BA

Tritanopia (blue-blind)

#007081

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2f57bc;
/* rgb */ color: rgb(47, 87, 188);
/* oklch */ color: oklch(48.8% 0.166 264.6);

Tailwind

colors: {
  custom: {
    50: '#7b85d1',
    500: '#2f57bc',
    950: '#000000',
  },
}

SCSS

$custom: #2f57bc;
$custom-light: #7b85d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2f57bc",
  "rgb": {
    "r": 47,
    "g": 87,
    "b": 188
  },
  "hsl": {
    "h": 222.979,
    "s": 60,
    "l": 46.078
  },
  "oklch": {
    "l": 0.48771,
    "c": 0.16569,
    "h": 264.6
  },
  "luminance": 0.11052
}

Semantic roles & 50–950 ramp

primary

#2F57BC

secondary

#CAB47D

accent

#B645E3

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #2F57BC

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

Preview Lab → · Contrast checker → · Palette generator →