#2A78B3#2A78B3

#2A78B3 is a mid, moderate cyan. Relative luminance 0.172; OKLCH L 55.4% C 0.118 H 245.5°. Best body text is #FFFFFF at 4.73:1 contrast (WCAG AA passes).

Color values

HEX	#2A78B3
RGB	rgb(42, 120, 179)
HSL	hsl(206, 62%, 43%)
HSV	hsv(206, 77%, 70%)
CMYK	cmyk(76.5%, 33%, 0%, 29.8%)
CIE-LAB	lab(48.48, -3.00, -37.93)
CIE-LCH	lch(48.48, 38.05, 265.48°)
OKLab	oklab(55.38% -0.0492 -0.1077)
OKLCH	oklch(55.38% 0.118 245.5)
XYZ	xyz(15.8049, 17.1780, 45.1218)
Luminance	0.1718 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2A78B3 #B3652A

analogous

#2AB3A9 #2A78B3 #2A34B3

triadic

#2A78B3 #B32A78 #78B32A

tetradic

#2A78B3 #A92AB3 #B3652A #34B32A

square

#2A78B3 #A92AB3 #B3652A #34B32A

split-complementary

#2A78B3 #B32A34 #B3A92A

monochromatic

#133650 #1E5781 #2A78B3 #4697D4 #78B3DF

Accessibility & contrast

On white

4.73

#2A78B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.44

#2A78B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2A78B3

4.73:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2A78B3	#FFFFFF	#000000	##FFFFFF
##2A78B3	1.00	4.73	4.44	4.73
#FFFFFF	4.73	1.00	21.00	1.00
#000000	4.44	21.00	1.00	21.00
##FFFFFF	4.73	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5D7AB6

Deuteranopia (green-blind)

#496DB2

Tritanopia (blue-blind)

#00868D

Achromatopsia (no color)

#737373

Design tokens & code

CSS

--color: #2a78b3;
/* rgb */ color: rgb(42, 120, 179);
/* oklch */ color: oklch(55.4% 0.118 245.5);

Tailwind

colors: {
  custom: {
    50: '#779eca',
    500: '#2a78b3',
    950: '#000000',
  },
}

SCSS

$custom: #2a78b3;
$custom-light: #779eca;
$custom-dark: #000000;

JSON

{
  "hex": "#2a78b3",
  "rgb": {
    "r": 42,
    "g": 120,
    "b": 179
  },
  "hsl": {
    "h": 205.839,
    "s": 61.991,
    "l": 43.333
  },
  "oklch": {
    "l": 0.55377,
    "c": 0.11837,
    "h": 245.5
  },
  "luminance": 0.1718
}

Semantic roles & 50–950 ramp

primary

#2A78B3

secondary

#C79672

accent

#8943E5

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0E13

muted

#7C7E82

Preview Lab

Preview with #2A78B3

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

Preview Lab → · Contrast checker → · Palette generator →