#2F57B8#2F57B8

#2F57B8 is a mid, vivid blue. Relative luminance 0.109; OKLCH L 48.5% C 0.160 H 264.3°. Best body text is #FFFFFF at 6.61:1 contrast (WCAG AA passes).

Color values

HEX	#2F57B8
RGB	rgb(47, 87, 184)
HSL	hsl(222, 59%, 45%)
HSV	hsv(222, 74%, 72%)
CMYK	cmyk(74.5%, 52.7%, 0%, 27.8%)
CIE-LAB	lab(39.38, 20.42, -55.39)
CIE-LCH	lch(39.38, 59.04, 290.24°)
OKLab	oklab(48.46% -0.0158 -0.1594)
OKLCH	oklch(48.46% 0.16 264.3)
XYZ	xyz(13.2292, 10.8800, 46.7409)
Luminance	0.1088 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F57B8 #B8902F

analogous

#2F9BB8 #2F57B8 #4C2FB8

triadic

#2F57B8 #B82F57 #57B82F

tetradic

#2F57B8 #B82F9B #B8902F #2FB84C

square

#2F57B8 #B82F9B #B8902F #2FB84C

split-complementary

#2F57B8 #B84C2F #9BB82F

monochromatic

#162957 #234087 #2F57B8 #5277D3 #829DDF

Accessibility & contrast

On white

6.61

#2F57B8 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.18

#2F57B8 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F57B8

6.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F57B8	#FFFFFF	#000000	##FFFFFF
##2F57B8	1.00	6.61	3.18	6.61
#FFFFFF	6.61	1.00	21.00	1.00
#000000	3.18	21.00	1.00	21.00
##FFFFFF	6.61	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1363BB

Deuteranopia (green-blind)

#0057B6

Tritanopia (blue-blind)

#006E7F

Achromatopsia (no color)

#5D5D5D

Design tokens & code

CSS

--color: #2f57b8;
/* rgb */ color: rgb(47, 87, 184);
/* oklch */ color: oklch(48.5% 0.160 264.3);

Tailwind

colors: {
  custom: {
    50: '#7b85ce',
    500: '#2f57b8',
    950: '#000000',
  },
}

SCSS

$custom: #2f57b8;
$custom-light: #7b85ce;
$custom-dark: #000000;

JSON

{
  "hex": "#2f57b8",
  "rgb": {
    "r": 47,
    "g": 87,
    "b": 184
  },
  "hsl": {
    "h": 222.482,
    "s": 59.307,
    "l": 45.294
  },
  "oklch": {
    "l": 0.48463,
    "c": 0.16023,
    "h": 264.3
  },
  "luminance": 0.10881
}

Semantic roles & 50–950 ramp

primary

#2F57B8

secondary

#C8B27B

accent

#B545E2

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0B0B14

muted

#7C7C82

Preview Lab

Preview with #2F57B8

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

Preview Lab → · Contrast checker → · Palette generator →