#2F66B3#2F66B3

#2F66B3 is a mid, vivid blue. Relative luminance 0.134; OKLCH L 51.4% C 0.135 H 257.4°. Best body text is #FFFFFF at 5.72:1 contrast (WCAG AA passes).

Color values

HEX	#2F66B3
RGB	rgb(47, 102, 179)
HSL	hsl(215, 58%, 44%)
HSV	hsv(215, 74%, 70%)
CMYK	cmyk(73.7%, 43%, 0%, 29.8%)
CIE-LAB	lab(43.30, 8.81, -46.15)
CIE-LCH	lch(43.30, 46.99, 280.81°)
OKLab	oklab(51.37% -0.0295 -0.132)
OKLCH	oklch(51.37% 0.135 257.4)
XYZ	xyz(14.0574, 13.3602, 44.4770)
Luminance	0.1336 (WCAG relative)
Temperature	cool
Family	blue

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2F66B3 #B37C2F

analogous

#2FA8B3 #2F66B3 #3A2FB3

triadic

#2F66B3 #B32F66 #66B32F

tetradic

#2F66B3 #B32FA8 #B37C2F #2FB33A

square

#2F66B3 #B32FA8 #B37C2F #2FB33A

split-complementary

#2F66B3 #B33A2F #A8B32F

monochromatic

#162F52 #224A83 #2F66B3 #4F85D1 #7FA6DD

Accessibility & contrast

On white

5.72

#2F66B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

3.67

#2F66B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2F66B3

5.72:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2F66B3	#FFFFFF	#000000	##FFFFFF
##2F66B3	1.00	5.72	3.67	5.72
#FFFFFF	5.72	1.00	21.00	1.00
#000000	3.67	21.00	1.00	21.00
##FFFFFF	5.72	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#406DB6

Deuteranopia (green-blind)

#2961B1

Tritanopia (blue-blind)

#007884

Achromatopsia (no color)

#666666

Design tokens & code

CSS

--color: #2f66b3;
/* rgb */ color: rgb(47, 102, 179);
/* oklch */ color: oklch(51.4% 0.135 257.4);

Tailwind

colors: {
  custom: {
    50: '#7991ca',
    500: '#2f66b3',
    950: '#000000',
  },
}

SCSS

$custom: #2f66b3;
$custom-light: #7991ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2f66b3",
  "rgb": {
    "r": 47,
    "g": 102,
    "b": 179
  },
  "hsl": {
    "h": 215,
    "s": 58.407,
    "l": 44.314
  },
  "oklch": {
    "l": 0.51368,
    "c": 0.13524,
    "h": 257.4
  },
  "luminance": 0.13362
}

Semantic roles & 50–950 ramp

primary

#2F66B3

secondary

#C6A578

accent

#A146E2

background

#F7F8FC

surface

#EEF0F8

border

#C9CBD1

text

#0A0C13

muted

#7C7D82

Preview Lab

Preview with #2F66B3

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

Preview Lab → · Contrast checker → · Palette generator →