#278EB3#278EB3

#278EB3 is a mid, moderate cyan. Relative luminance 0.230; OKLCH L 60.6% C 0.106 H 227.2°. Best body text is #000000 at 5.61:1 contrast (WCAG AA passes).

Color values

HEX	#278EB3
RGB	rgb(39, 142, 179)
HSL	hsl(196, 64%, 43%)
HSV	hsv(196, 78%, 70%)
CMYK	cmyk(78.2%, 20.7%, 0%, 29.8%)
CIE-LAB	lab(55.10, -15.97, -27.59)
CIE-LCH	lch(55.10, 31.88, 239.94°)
OKLab	oklab(60.62% -0.0716 -0.0775)
OKLCH	oklch(60.62% 0.106 227.2)
XYZ	xyz(18.6430, 23.0297, 46.1017)
Luminance	0.2303 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278EB3 #B34C27

analogous

#27B392 #278EB3 #2748B3

triadic

#278EB3 #B3278E #8EB327

tetradic

#278EB3 #9227B3 #B34C27 #48B327

square

#278EB3 #9227B3 #B34C27 #48B327

split-complementary

#278EB3 #B32748 #B39227

monochromatic

#113E4E #1C6681 #278EB3 #41AFD6 #74C4E1

Accessibility & contrast

On white

3.75

#278EB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.61

#278EB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278EB3

5.61:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278EB3	#FFFFFF	#000000	##000000
##278EB3	1.00	3.75	5.61	5.61
#FFFFFF	3.75	1.00	21.00	21.00
#000000	5.61	21.00	1.00	1.00
##000000	5.61	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7A8BB5

Deuteranopia (green-blind)

#687EB3

Tritanopia (blue-blind)

#00999A

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #278eb3;
/* rgb */ color: rgb(39, 142, 179);
/* oklch */ color: oklch(60.6% 0.106 227.2);

Tailwind

colors: {
  custom: {
    50: '#77afca',
    500: '#278eb3',
    950: '#000000',
  },
}

SCSS

$custom: #278eb3;
$custom-light: #77afca;
$custom-dark: #000000;

JSON

{
  "hex": "#278eb3",
  "rgb": {
    "r": 39,
    "g": 142,
    "b": 179
  },
  "hsl": {
    "h": 195.857,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.6062,
    "c": 0.10554,
    "h": 227.2
  },
  "luminance": 0.23032
}

Semantic roles & 50–950 ramp

primary

#278EB3

secondary

#C8866E

accent

#6D41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278EB3

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

Preview Lab → · Contrast checker → · Palette generator →