#2F57BB#2F57BB

#2F57BB is a mid, vivid blue. Relative luminance 0.110; OKLCH L 48.7% C 0.164 H 264.6°. Best body text is #FFFFFF at 6.56:1 contrast (WCAG AA passes).

Color values

HEX	#2F57BB
RGB	rgb(47, 87, 187)
HSL	hsl(223, 60%, 46%)
HSV	hsv(223, 75%, 73%)
CMYK	cmyk(74.9%, 53.5%, 0%, 26.7%)
CIE-LAB	lab(39.59, 21.56, -56.80)
CIE-LCH	lch(39.59, 60.76, 290.78°)
OKLab	oklab(48.69% -0.0155 -0.1636)
OKLCH	oklch(48.69% 0.164 264.6)
XYZ	xyz(13.5470, 11.0071, 48.4147)
Luminance	0.1101 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F57BB #BB932F

analogous

#2F9DBB #2F57BB #4D2FBB

triadic

#2F57BB #BB2F57 #57BB2F

tetradic

#2F57BB #BB2F9D #BB932F #2FBB4D

square

#2F57BB #BB2F9D #BB932F #2FBB4D

split-complementary

#2F57BB #BB4D2F #9DBB2F

monochromatic

#162959 #23408A #2F57BB #5378D4 #849FE0

Accessibility & contrast

On white

6.56

#2F57BB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.20

#2F57BB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F57BB

6.56:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F57BB	#FFFFFF	#000000	##FFFFFF
##2F57BB	1.00	6.56	3.20	6.56
#FFFFFF	6.56	1.00	21.00	1.00
#000000	3.20	21.00	1.00	21.00
##FFFFFF	6.56	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#0964BF

Deuteranopia (green-blind)

#0057B9

Tritanopia (blue-blind)

#006F80

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2f57bb;
/* rgb */ color: rgb(47, 87, 187);
/* oklch */ color: oklch(48.7% 0.164 264.6);

Tailwind

colors: {
  custom: {
    50: '#7b85d0',
    500: '#2f57bb',
    950: '#000000',
  },
}

SCSS

$custom: #2f57bb;
$custom-light: #7b85d0;
$custom-dark: #000000;

JSON

{
  "hex": "#2f57bb",
  "rgb": {
    "r": 47,
    "g": 87,
    "b": 187
  },
  "hsl": {
    "h": 222.857,
    "s": 59.829,
    "l": 45.882
  },
  "oklch": {
    "l": 0.48694,
    "c": 0.16433,
    "h": 264.6
  },
  "luminance": 0.11009
}

Semantic roles & 50–950 ramp

primary

#2F57BB

secondary

#C9B37C

accent

#B645E3

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #2F57BB

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

Preview Lab → · Contrast checker → · Palette generator →