#2B57B7#2B57B7

#2B57B7 is a mid, vivid blue. Relative luminance 0.107; OKLCH L 48.2% C 0.160 H 263.2°. Best body text is #FFFFFF at 6.67:1 contrast (WCAG AA passes).

Color values

HEX	#2B57B7
RGB	rgb(43, 87, 183)
HSL	hsl(221, 62%, 44%)
HSV	hsv(221, 77%, 72%)
CMYK	cmyk(76.5%, 52.5%, 0%, 28.2%)
CIE-LAB	lab(39.15, 19.55, -55.18)
CIE-LCH	lch(39.15, 58.54, 289.51°)
OKLab	oklab(48.23% -0.019 -0.1589)
OKLCH	oklch(48.23% 0.16 263.2)
XYZ	xyz(12.9486, 10.7474, 46.1826)
Luminance	0.1075 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B57B7 #B78B2B

analogous

#2B9DB7 #2B57B7 #452BB7

triadic

#2B57B7 #B72B57 #57B72B

tetradic

#2B57B7 #B72B9D #B78B2B #2BB745

square

#2B57B7 #B72B9D #B78B2B #2BB745

split-complementary

#2B57B7 #B7452B #9DB72B

monochromatic

#142854 #1F3F85 #2B57B7 #4B76D5 #7C9CE0

Accessibility & contrast

On white

6.67

#2B57B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.15

#2B57B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2B57B7

6.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B57B7	#FFFFFF	#000000	##FFFFFF
##2B57B7	1.00	6.67	3.15	6.67
#FFFFFF	6.67	1.00	21.00	1.00
#000000	3.15	21.00	1.00	21.00
##FFFFFF	6.67	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#1463BA

Deuteranopia (green-blind)

#0056B5

Tritanopia (blue-blind)

#006E7E

Achromatopsia (no color)

#5C5C5C

Design tokens & code

CSS

--color: #2b57b7;
/* rgb */ color: rgb(43, 87, 183);
/* oklch */ color: oklch(48.2% 0.160 263.2);

Tailwind

colors: {
  custom: {
    50: '#7985cd',
    500: '#2b57b7',
    950: '#000000',
  },
}

SCSS

$custom: #2b57b7;
$custom-light: #7985cd;
$custom-dark: #000000;

JSON

{
  "hex": "#2b57b7",
  "rgb": {
    "r": 43,
    "g": 87,
    "b": 183
  },
  "hsl": {
    "h": 221.143,
    "s": 61.947,
    "l": 44.314
  },
  "oklch": {
    "l": 0.48225,
    "c": 0.16001,
    "h": 263.2
  },
  "luminance": 0.10749
}

Semantic roles & 50–950 ramp

primary

#2B57B7

secondary

#C9AE75

accent

#B243E5

background

#F8F8FC

surface

#EFEFF9

border

#CACAD2

text

#0A0B14

muted

#7C7C82

Preview Lab

Preview with #2B57B7

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

Preview Lab → · Contrast checker → · Palette generator →