#2F57B3#2F57B3

#2F57B3 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.1% C 0.153 H 263.9°. Best body text is #FFFFFF at 6.70:1 contrast (WCAG AA passes).

Color values

HEX	#2F57B3
RGB	rgb(47, 87, 179)
HSL	hsl(222, 58%, 44%)
HSV	hsv(222, 74%, 70%)
CMYK	cmyk(73.7%, 51.4%, 0%, 29.8%)
CIE-LAB	lab(39.03, 18.53, -53.02)
CIE-LCH	lch(39.03, 56.17, 289.27°)
OKLab	oklab(48.08% -0.0164 -0.1525)
OKLCH	oklch(48.08% 0.153 263.9)
XYZ	xyz(12.7143, 10.6740, 44.0293)
Luminance	0.1067 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F57B3 #B38B2F

analogous

#2F99B3 #2F57B3 #492FB3

triadic

#2F57B3 #B32F57 #57B32F

tetradic

#2F57B3 #B32F99 #B38B2F #2FB349

square

#2F57B3 #B32F99 #B38B2F #2FB349

split-complementary

#2F57B3 #B3492F #99B32F

monochromatic

#162852 #223F83 #2F57B3 #4F76D1 #7F9CDD

Accessibility & contrast

On white

6.70

#2F57B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.14

#2F57B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F57B3

6.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F57B3	#FFFFFF	#000000	##FFFFFF
##2F57B3	1.00	6.70	3.14	6.70
#FFFFFF	6.70	1.00	21.00	1.00
#000000	3.14	21.00	1.00	21.00
##FFFFFF	6.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1D62B6

Deuteranopia (green-blind)

#0056B1

Tritanopia (blue-blind)

#006D7C

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2f57b3;
/* rgb */ color: rgb(47, 87, 179);
/* oklch */ color: oklch(48.1% 0.153 263.9);

Tailwind

colors: {
  custom: {
    50: '#7985ca',
    500: '#2f57b3',
    950: '#000000',
  },
}

SCSS

$custom: #2f57b3;
$custom-light: #7985ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2f57b3",
  "rgb": {
    "r": 47,
    "g": 87,
    "b": 179
  },
  "hsl": {
    "h": 221.818,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.48083,
    "c": 0.15335,
    "h": 263.9
  },
  "luminance": 0.10675
}

Semantic roles & 50–950 ramp

primary

#2F57B3

secondary

#C6AE78

accent

#B346E2

background

#F8F8FC

surface

#EFEFF8

border

#CACAD1

text

#0A0B13

muted

#7C7C82

Preview Lab

Preview with #2F57B3

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

Preview Lab → · Contrast checker → · Palette generator →