#2A78B7#2A78B7

#2A78B7 is a mid, vivid cyan. Relative luminance 0.173; OKLCH L 55.6% C 0.123 H 247.1°. Best body text is #FFFFFF at 4.70:1 contrast (WCAG AA passes).

Color values

HEX	#2A78B7
RGB	rgb(42, 120, 183)
HSL	hsl(207, 63%, 44%)
HSV	hsv(207, 77%, 72%)
CMYK	cmyk(77%, 34.4%, 0%, 28.2%)
CIE-LAB	lab(48.69, -1.52, -39.92)
CIE-LCH	lch(48.69, 39.95, 267.82°)
OKLab	oklab(55.61% -0.048 -0.1135)
OKLCH	oklch(55.61% 0.123 247.1)
XYZ	xyz(16.2153, 17.3422, 47.2833)
Luminance	0.1734 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A78B7 #B7692A

analogous

#2AB7B0 #2A78B7 #2A31B7

triadic

#2A78B7 #B72A78 #78B72A

tetradic

#2A78B7 #B02AB7 #B7692A #31B72A

square

#2A78B7 #B02AB7 #B7692A #31B72A

split-complementary

#2A78B7 #B72A31 #B7B02A

monochromatic

#133753 #1F5785 #2A78B7 #4997D5 #7BB3E1

Accessibility & contrast

On white

4.70

#2A78B7 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.47

#2A78B7 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2A78B7

4.70:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A78B7	#FFFFFF	#000000	##FFFFFF
##2A78B7	1.00	4.70	4.47	4.70
#FFFFFF	4.70	1.00	21.00	1.00
#000000	4.47	21.00	1.00	21.00
##FFFFFF	4.70	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5B7BBA

Deuteranopia (green-blind)

#476EB6

Tritanopia (blue-blind)

#00878F

Achromatopsia (no color)

#747474

Design tokens & code

CSS

--color: #2a78b7;
/* rgb */ color: rgb(42, 120, 183);
/* oklch */ color: oklch(55.6% 0.123 247.1);

Tailwind

colors: {
  custom: {
    50: '#789ecd',
    500: '#2a78b7',
    950: '#000000',
  },
}

SCSS

$custom: #2a78b7;
$custom-light: #789ecd;
$custom-dark: #000000;

JSON

{
  "hex": "#2a78b7",
  "rgb": {
    "r": 42,
    "g": 120,
    "b": 183
  },
  "hsl": {
    "h": 206.809,
    "s": 62.667,
    "l": 44.118
  },
  "oklch": {
    "l": 0.55606,
    "c": 0.12323,
    "h": 247.1
  },
  "luminance": 0.17344
}

Semantic roles & 50–950 ramp

primary

#2A78B7

secondary

#C99A74

accent

#8B42E6

background

#F7F9FC

surface

#EEF2F9

border

#C9CCD2

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2A78B7

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

Preview Lab → · Contrast checker → · Palette generator →