#278FB3#278FB3

#278FB3 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 60.9% C 0.105 H 226.3°. Best body text is #000000 at 5.67:1 contrast (WCAG AA passes).

Color values

HEX	#278FB3
RGB	rgb(39, 143, 179)
HSL	hsl(195, 64%, 43%)
HSV	hsv(195, 78%, 70%)
CMYK	cmyk(78.2%, 20.1%, 0%, 29.8%)
CIE-LAB	lab(55.41, -16.51, -27.12)
CIE-LCH	lch(55.41, 31.75, 238.66°)
OKLab	oklab(60.87% -0.0726 -0.0761)
OKLCH	oklch(60.87% 0.105 226.3)
XYZ	xyz(18.7925, 23.3286, 46.1515)
Luminance	0.2333 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278FB3 #B34B27

analogous

#27B391 #278FB3 #2749B3

triadic

#278FB3 #B3278F #8FB327

tetradic

#278FB3 #9127B3 #B34B27 #49B327

square

#278FB3 #9127B3 #B34B27 #49B327

split-complementary

#278FB3 #B32749 #B39127

monochromatic

#113F4E #1C6781 #278FB3 #41B0D6 #74C5E1

Accessibility & contrast

On white

3.71

#278FB3 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.67

#278FB3 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278FB3

5.67:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278FB3	#FFFFFF	#000000	##000000
##278FB3	1.00	3.71	5.67	5.67
#FFFFFF	3.71	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)

#7C8CB5

Deuteranopia (green-blind)

#697FB3

Tritanopia (blue-blind)

#00999B

Achromatopsia (no color)

#858585

Design tokens & code

CSS

--color: #278fb3;
/* rgb */ color: rgb(39, 143, 179);
/* oklch */ color: oklch(60.9% 0.105 226.3);

Tailwind

colors: {
  custom: {
    50: '#78afca',
    500: '#278fb3',
    950: '#000000',
  },
}

SCSS

$custom: #278fb3;
$custom-light: #78afca;
$custom-dark: #000000;

JSON

{
  "hex": "#278fb3",
  "rgb": {
    "r": 39,
    "g": 143,
    "b": 179
  },
  "hsl": {
    "h": 195.429,
    "s": 64.22,
    "l": 42.745
  },
  "oklch": {
    "l": 0.60865,
    "c": 0.1052,
    "h": 226.3
  },
  "luminance": 0.23331
}

Semantic roles & 50–950 ramp

primary

#278FB3

secondary

#C8856E

accent

#6B41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278FB3

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

Preview Lab → · Contrast checker → · Palette generator →