#2F57B5#2F57B5

#2F57B5 is a mid, vivid blue. Relative luminance 0.108; OKLCH L 48.2% C 0.156 H 264.1°. Best body text is #FFFFFF at 6.66:1 contrast (WCAG AA passes).

Color values

HEX	#2F57B5
RGB	rgb(47, 87, 181)
HSL	hsl(222, 59%, 45%)
HSV	hsv(222, 74%, 71%)
CMYK	cmyk(74%, 51.9%, 0%, 29%)
CIE-LAB	lab(39.17, 19.29, -53.98)
CIE-LCH	lch(39.17, 57.32, 289.67°)
OKLab	oklab(48.23% -0.0161 -0.1553)
OKLCH	oklch(48.23% 0.156 264.1)
XYZ	xyz(12.9180, 10.7555, 45.1023)
Luminance	0.1076 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F57B5 #B58D2F

analogous

#2F9AB5 #2F57B5 #4A2FB5

triadic

#2F57B5 #B52F57 #57B52F

tetradic

#2F57B5 #B52F9A #B58D2F #2FB54A

square

#2F57B5 #B52F9A #B58D2F #2FB54A

split-complementary

#2F57B5 #B54A2F #9AB52F

monochromatic

#162854 #224084 #2F57B5 #5076D1 #809CDE

Accessibility & contrast

On white

6.66

#2F57B5 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#2F57B5 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F57B5

6.66:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F57B5	#FFFFFF	#000000	##FFFFFF
##2F57B5	1.00	6.66	3.15	6.66
#FFFFFF	6.66	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.66	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1963B8

Deuteranopia (green-blind)

#0056B3

Tritanopia (blue-blind)

#006E7D

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2f57b5;
/* rgb */ color: rgb(47, 87, 181);
/* oklch */ color: oklch(48.2% 0.156 264.1);

Tailwind

colors: {
  custom: {
    50: '#7a85cc',
    500: '#2f57b5',
    950: '#000000',
  },
}

SCSS

$custom: #2f57b5;
$custom-light: #7a85cc;
$custom-dark: #000000;

JSON

{
  "hex": "#2f57b5",
  "rgb": {
    "r": 47,
    "g": 87,
    "b": 181
  },
  "hsl": {
    "h": 222.09,
    "s": 58.772,
    "l": 44.706
  },
  "oklch": {
    "l": 0.48234,
    "c": 0.15611,
    "h": 264.1
  },
  "luminance": 0.10757
}

Semantic roles & 50–950 ramp

primary

#2F57B5

secondary

#C7B079

accent

#B346E2

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2F57B5

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

Preview Lab → · Contrast checker → · Palette generator →