#278FB4#278FB4

#278FB4 is a mid, moderate cyan. Relative luminance 0.234; OKLCH L 60.9% C 0.106 H 227.0°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#278FB4
RGB	rgb(39, 143, 180)
HSL	hsl(196, 64%, 43%)
HSV	hsv(196, 78%, 71%)
CMYK	cmyk(78.3%, 20.6%, 0%, 29.4%)
CIE-LAB	lab(55.45, -16.17, -27.62)
CIE-LCH	lch(55.45, 32.01, 239.66°)
OKLab	oklab(60.91% -0.0722 -0.0776)
OKLCH	oklch(60.91% 0.106 227)
XYZ	xyz(18.8940, 23.3692, 46.6861)
Luminance	0.2337 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278FB4 #B44C27

analogous

#27B493 #278FB4 #2748B4

triadic

#278FB4 #B4278F #8FB427

tetradic

#278FB4 #9327B4 #B44C27 #48B427

square

#278FB4 #9327B4 #B44C27 #48B427

split-complementary

#278FB4 #B42748 #B49327

monochromatic

#113F4F #1C6782 #278FB4 #42AFD6 #74C4E1

Accessibility & contrast

On white

3.70

#278FB4 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#278FB4 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278FB4

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278FB4	#FFFFFF	#000000	##000000
##278FB4	1.00	3.70	5.67	5.67
#FFFFFF	3.70	1.00	21.00	21.00
#000000	5.67	21.00	1.00	1.00
##000000	5.67	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7B8CB6

Deuteranopia (green-blind)

#687FB4

Tritanopia (blue-blind)

#009A9B

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #278fb4;
/* rgb */ color: rgb(39, 143, 180);
/* oklch */ color: oklch(60.9% 0.106 227.0);

Tailwind

colors: {
  custom: {
    50: '#78afca',
    500: '#278fb4',
    950: '#000000',
  },
}

SCSS

$custom: #278fb4;
$custom-light: #78afca;
$custom-dark: #000000;

JSON

{
  "hex": "#278fb4",
  "rgb": {
    "r": 39,
    "g": 143,
    "b": 180
  },
  "hsl": {
    "h": 195.745,
    "s": 64.384,
    "l": 42.941
  },
  "oklch": {
    "l": 0.60912,
    "c": 0.106,
    "h": 227
  },
  "luminance": 0.23372
}

Semantic roles & 50–950 ramp

primary

#278FB4

secondary

#C8866F

accent

#6C40E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278FB4

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

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