#2B66BC#2B66BC

#2B66BC is a mid, vivid blue. Relative luminance 0.136; OKLCH L 51.8% C 0.149 H 258.2°. Best body text is #FFFFFF at 5.63:1 contrast (WCAG AA passes).

Color values

HEX	#2B66BC
RGB	rgb(43, 102, 188)
HSL	hsl(216, 63%, 45%)
HSV	hsv(216, 77%, 74%)
CMYK	cmyk(77.1%, 45.7%, 0%, 26.3%)
CIE-LAB	lab(43.72, 11.71, -50.74)
CIE-LCH	lch(43.72, 52.07, 283.00°)
OKLab	oklab(51.83% -0.0304 -0.1455)
OKLCH	oklch(51.83% 0.149 258.2)
XYZ	xyz(14.8214, 13.6455, 49.4199)
Luminance	0.1365 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2B66BC #BC812B

analogous

#2BAFBC #2B66BC #382BBC

triadic

#2B66BC #BC2B66 #66BC2B

tetradic

#2B66BC #BC2BAF #BC812B #2BBC38

square

#2B66BC #BC2BAF #BC812B #2BBC38

split-complementary

#2B66BC #BC382B #AFBC2B

monochromatic

#143058 #204B8A #2B66BC #4E85D6 #80A8E2

Accessibility & contrast

On white

5.63

#2B66BC on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.73

#2B66BC on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2B66BC

5.63:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2B66BC	#FFFFFF	#000000	##FFFFFF
##2B66BC	1.00	5.63	3.73	5.63
#FFFFFF	5.63	1.00	21.00	1.00
#000000	3.73	21.00	1.00	21.00
##FFFFFF	5.63	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#396EBF

Deuteranopia (green-blind)

#1761BA

Tritanopia (blue-blind)

#007A88

Achromatopsia (no color)

#676767

Design tokens & code

CSS

--color: #2b66bc;
/* rgb */ color: rgb(43, 102, 188);
/* oklch */ color: oklch(51.8% 0.149 258.2);

Tailwind

colors: {
  custom: {
    50: '#7991d1',
    500: '#2b66bc',
    950: '#000000',
  },
}

SCSS

$custom: #2b66bc;
$custom-light: #7991d1;
$custom-dark: #000000;

JSON

{
  "hex": "#2b66bc",
  "rgb": {
    "r": 43,
    "g": 102,
    "b": 188
  },
  "hsl": {
    "h": 215.586,
    "s": 62.771,
    "l": 45.294
  },
  "oklch": {
    "l": 0.51832,
    "c": 0.14866,
    "h": 258.2
  },
  "luminance": 0.13647
}

Semantic roles & 50–950 ramp

primary

#2B66BC

secondary

#CBA978

accent

#A342E6

background

#F8F8FC

surface

#EFF0F9

border

#CACBD2

text

#0B0C14

muted

#7C7D82

Preview Lab

Preview with #2B66BC

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

Preview Lab → · Contrast checker → · Palette generator →