#2F57AE#2F57AE

#2F57AE is a mid, vivid blue. Relative luminance 0.105; OKLCH L 47.7% C 0.146 H 263.3°. Best body text is #FFFFFF at 6.78:1 contrast (WCAG AA passes).

Color values

HEX	#2F57AE
RGB	rgb(47, 87, 174)
HSL	hsl(221, 57%, 43%)
HSV	hsv(221, 73%, 68%)
CMYK	cmyk(73%, 50%, 0%, 31.8%)
CIE-LAB	lab(38.68, 16.64, -50.63)
CIE-LCH	lch(38.68, 53.29, 288.20°)
OKLab	oklab(47.71% -0.017 -0.1454)
OKLCH	oklch(47.71% 0.146 263.3)
XYZ	xyz(12.2178, 10.4754, 41.4142)
Luminance	0.1048 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F57AE #AE862F

analogous

#2F96AE #2F57AE #462FAE

triadic

#2F57AE #AE2F57 #57AE2F

tetradic

#2F57AE #AE2F96 #AE862F #2FAE46

square

#2F57AE #AE2F96 #AE862F #2FAE46

split-complementary

#2F57AE #AE462F #96AE2F

monochromatic

#15274E #223F7E #2F57AE #4C75CF #7C9ADC

Accessibility & contrast

On white

6.78

#2F57AE on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.10

#2F57AE on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F57AE

6.78:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F57AE	#FFFFFF	#000000	##FFFFFF
##2F57AE	1.00	6.78	3.10	6.78
#FFFFFF	6.78	1.00	21.00	1.00
#000000	3.10	21.00	1.00	21.00
##FFFFFF	6.78	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2461B1

Deuteranopia (green-blind)

#0056AC

Tritanopia (blue-blind)

#006C7A

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2f57ae;
/* rgb */ color: rgb(47, 87, 174);
/* oklch */ color: oklch(47.7% 0.146 263.3);

Tailwind

colors: {
  custom: {
    50: '#7885c7',
    500: '#2f57ae',
    950: '#000000',
  },
}

SCSS

$custom: #2f57ae;
$custom-light: #7885c7;
$custom-dark: #000000;

JSON

{
  "hex": "#2f57ae",
  "rgb": {
    "r": 47,
    "g": 87,
    "b": 174
  },
  "hsl": {
    "h": 221.102,
    "s": 57.466,
    "l": 43.333
  },
  "oklch": {
    "l": 0.47712,
    "c": 0.14641,
    "h": 263.3
  },
  "luminance": 0.10477
}

Semantic roles & 50–950 ramp

primary

#2F57AE

secondary

#C4AB75

accent

#B047E1

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2F57AE

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

Preview Lab → · Contrast checker → · Palette generator →