#2666B4#2666B4

#2666B4 is a mid, vivid cyan. Relative luminance 0.132; OKLCH L 51.1% C 0.139 H 255.5°. Best body text is #FFFFFF at 5.77:1 contrast (WCAG AA passes).

Color values

HEX	#2666B4
RGB	rgb(38, 102, 180)
HSL	hsl(213, 65%, 43%)
HSV	hsv(213, 79%, 71%)
CMYK	cmyk(78.9%, 43.3%, 0%, 29.4%)
CIE-LAB	lab(43.08, 8.07, -47.11)
CIE-LCH	lch(43.08, 47.80, 279.72°)
OKLab	oklab(51.13% -0.0349 -0.1349)
OKLCH	oklch(51.13% 0.139 255.5)
XYZ	xyz(13.7859, 13.2085, 44.9941)
Luminance	0.1321 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2666B4 #B47426

analogous

#26ADB4 #2666B4 #2D26B4

triadic

#2666B4 #B42666 #66B426

tetradic

#2666B4 #B426AD #B47426 #26B42D

square

#2666B4 #B426AD #B47426 #26B42D

split-complementary

#2666B4 #B42D26 #ADB426

monochromatic

#112D4F #1B4981 #2666B4 #4084D7 #73A5E1

Accessibility & contrast

On white

5.77

#2666B4 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.64

#2666B4 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2666B4

5.77:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2666B4	#FFFFFF	#000000	##FFFFFF
##2666B4	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)

#3F6DB7

Deuteranopia (green-blind)

#2460B2

Tritanopia (blue-blind)

#007984

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #2666b4;
/* rgb */ color: rgb(38, 102, 180);
/* oklch */ color: oklch(51.1% 0.139 255.5);

Tailwind

colors: {
  custom: {
    50: '#7691cb',
    500: '#2666b4',
    950: '#000000',
  },
}

SCSS

$custom: #2666b4;
$custom-light: #7691cb;
$custom-dark: #000000;

JSON

{
  "hex": "#2666b4",
  "rgb": {
    "r": 38,
    "g": 102,
    "b": 180
  },
  "hsl": {
    "h": 212.958,
    "s": 65.138,
    "l": 42.745
  },
  "oklch": {
    "l": 0.51132,
    "c": 0.13938,
    "h": 255.5
  },
  "luminance": 0.1321
}

Semantic roles & 50–950 ramp

primary

#2666B4

secondary

#C99F6D

accent

#9C40E8

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #2666B4

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

Preview Lab → · Contrast checker → · Palette generator →