#2866B3#2866B3

#2866B3 is a mid, vivid cyan. Relative luminance 0.132; OKLCH L 51.1% C 0.137 H 255.7°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#2866B3
RGB	rgb(40, 102, 179)
HSL	hsl(213, 63%, 43%)
HSV	hsv(213, 78%, 70%)
CMYK	cmyk(77.7%, 43%, 0%, 29.8%)
CIE-LAB	lab(43.07, 7.91, -46.53)
CIE-LCH	lch(43.07, 47.20, 279.65°)
OKLab	oklab(51.13% -0.034 -0.1332)
OKLCH	oklch(51.13% 0.137 255.7)
XYZ	xyz(13.7601, 13.2069, 44.4631)
Luminance	0.1321 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2866B3 #B37528

analogous

#28ABB3 #2866B3 #2F28B3

triadic

#2866B3 #B32866 #66B328

tetradic

#2866B3 #B328AB #B37528 #28B32F

square

#2866B3 #B328AB #B37528 #28B32F

split-complementary

#2866B3 #B32F28 #ABB328

monochromatic

#122D4F #1D4981 #2866B3 #4384D5 #75A5E0

Accessibility & contrast

On white

5.77

#2866B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#2866B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2866B3

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2866B3	#FFFFFF	#000000	##FFFFFF
##2866B3	1.00	5.77	3.64	5.77
#FFFFFF	5.77	1.00	21.00	1.00
#000000	3.64	21.00	1.00	21.00
##FFFFFF	5.77	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#406DB6

Deuteranopia (green-blind)

#2660B1

Tritanopia (blue-blind)

#007884

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #2866b3;
/* rgb */ color: rgb(40, 102, 179);
/* oklch */ color: oklch(51.1% 0.137 255.7);

Tailwind

colors: {
  custom: {
    50: '#7691ca',
    500: '#2866b3',
    950: '#000000',
  },
}

SCSS

$custom: #2866b3;
$custom-light: #7691ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2866b3",
  "rgb": {
    "r": 40,
    "g": 102,
    "b": 179
  },
  "hsl": {
    "h": 213.237,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.51127,
    "c": 0.13746,
    "h": 255.7
  },
  "luminance": 0.13209
}

Semantic roles & 50–950 ramp

primary

#2866B3

secondary

#C8A06F

accent

#9D41E6

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #2866B3

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

Preview Lab → · Contrast checker → · Palette generator →