#2F57B9#2F57B9

#2F57B9 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.5% C 0.162 H 264.4°. Best body text is #FFFFFF at 6.59:1 contrast (WCAG AA passes).

Color values

HEX	#2F57B9
RGB	rgb(47, 87, 185)
HSL	hsl(223, 59%, 45%)
HSV	hsv(223, 75%, 73%)
CMYK	cmyk(74.6%, 53%, 0%, 27.5%)
CIE-LAB	lab(39.45, 20.80, -55.86)
CIE-LCH	lch(39.45, 59.61, 290.42°)
OKLab	oklab(48.54% -0.0157 -0.1608)
OKLCH	oklch(48.54% 0.162 264.4)
XYZ	xyz(13.3343, 10.9220, 47.2949)
Luminance	0.1092 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F57B9 #B9912F

analogous

#2F9CB9 #2F57B9 #4C2FB9

triadic

#2F57B9 #B92F57 #57B92F

tetradic

#2F57B9 #B92F9C #B9912F #2FB94C

square

#2F57B9 #B92F9C #B9912F #2FB94C

split-complementary

#2F57B9 #B94C2F #9CB92F

monochromatic

#162957 #234088 #2F57B9 #5277D3 #839EDF

Accessibility & contrast

On white

6.59

#2F57B9 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#2F57B9 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F57B9

6.59:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F57B9	#FFFFFF	#000000	##FFFFFF
##2F57B9	1.00	6.59	3.18	6.59
#FFFFFF	6.59	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.59	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1064BC

Deuteranopia (green-blind)

#0057B7

Tritanopia (blue-blind)

#006F7F

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2f57b9;
/* rgb */ color: rgb(47, 87, 185);
/* oklch */ color: oklch(48.5% 0.162 264.4);

Tailwind

colors: {
  custom: {
    50: '#7b85cf',
    500: '#2f57b9',
    950: '#000000',
  },
}

SCSS

$custom: #2f57b9;
$custom-light: #7b85cf;
$custom-dark: #000000;

JSON

{
  "hex": "#2f57b9",
  "rgb": {
    "r": 47,
    "g": 87,
    "b": 185
  },
  "hsl": {
    "h": 222.609,
    "s": 59.483,
    "l": 45.49
  },
  "oklch": {
    "l": 0.48539,
    "c": 0.1616,
    "h": 264.4
  },
  "luminance": 0.10924
}

Semantic roles & 50–950 ramp

primary

#2F57B9

secondary

#C9B27B

accent

#B545E3

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #2F57B9

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

Preview Lab → · Contrast checker → · Palette generator →