#2F57AB#2F57AB

#2F57AB is a mid, vivid blue. Relative luminance 0.104; OKLCH L 47.5% C 0.142 H 263.0°. Best body text is #FFFFFF at 6.84:1 contrast (WCAG AA passes).

Color values

HEX	#2F57AB
RGB	rgb(47, 87, 171)
HSL	hsl(221, 57%, 43%)
HSV	hsv(221, 73%, 67%)
CMYK	cmyk(72.5%, 49.1%, 0%, 32.9%)
CIE-LAB	lab(38.48, 15.50, -49.18)
CIE-LCH	lch(38.48, 51.56, 287.50°)
OKLab	oklab(47.49% -0.0174 -0.1411)
OKLCH	oklch(47.49% 0.142 263)
XYZ	xyz(11.9286, 10.3597, 39.8912)
Luminance	0.1036 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F57AB #AB832F

analogous

#2F95AB #2F57AB #452FAB

triadic

#2F57AB #AB2F57 #57AB2F

tetradic

#2F57AB #AB2F95 #AB832F #2FAB45

square

#2F57AB #AB2F95 #AB832F #2FAB45

split-complementary

#2F57AB #AB452F #95AB2F

monochromatic

#15264B #223F7B #2F57AB #4A74CD #7A99DA

Accessibility & contrast

On white

6.84

#2F57AB on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.07

#2F57AB on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F57AB

6.84:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F57AB	#FFFFFF	#000000	##FFFFFF
##2F57AB	1.00	6.84	3.07	6.84
#FFFFFF	6.84	1.00	21.00	1.00
#000000	3.07	21.00	1.00	21.00
##FFFFFF	6.84	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#2861AE

Deuteranopia (green-blind)

#0055A9

Tritanopia (blue-blind)

#006B79

Achromatopsia (no color)

#5B5B5B

Design tokens & code

CSS

--color: #2f57ab;
/* rgb */ color: rgb(47, 87, 171);
/* oklch */ color: oklch(47.5% 0.142 263.0);

Tailwind

colors: {
  custom: {
    50: '#7885c5',
    500: '#2f57ab',
    950: '#000000',
  },
}

SCSS

$custom: #2f57ab;
$custom-light: #7885c5;
$custom-dark: #000000;

JSON

{
  "hex": "#2f57ab",
  "rgb": {
    "r": 47,
    "g": 87,
    "b": 171
  },
  "hsl": {
    "h": 220.645,
    "s": 56.881,
    "l": 42.745
  },
  "oklch": {
    "l": 0.47493,
    "c": 0.14222,
    "h": 263
  },
  "luminance": 0.10361
}

Semantic roles & 50–950 ramp

primary

#2F57AB

secondary

#C3A973

accent

#AF48E0

background

#F7F8FC

surface

#EEEFF8

border

#C9CAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2F57AB

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

Preview Lab → · Contrast checker → · Palette generator →