#278FB1#278FB1

#278FB1 is a mid, moderate cyan. Relative luminance 0.233; OKLCH L 60.8% C 0.104 H 224.9°. Best body text is #000000 at 5.65:1 contrast (WCAG AA passes).

Color values

HEX	#278FB1
RGB	rgb(39, 143, 177)
HSL	hsl(195, 64%, 42%)
HSV	hsv(195, 78%, 69%)
CMYK	cmyk(78%, 19.2%, 0%, 30.6%)
CIE-LAB	lab(55.33, -17.20, -26.10)
CIE-LCH	lch(55.33, 31.26, 236.62°)
OKLab	oklab(60.77% -0.0734 -0.0732)
OKLCH	oklch(60.77% 0.104 224.9)
XYZ	xyz(18.5917, 23.2483, 45.0940)
Luminance	0.2325 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278FB1 #B14927

analogous

#27B18E #278FB1 #274AB1

triadic

#278FB1 #B1278F #8FB127

tetradic

#278FB1 #8E27B1 #B14927 #4AB127

square

#278FB1 #8E27B1 #B14927 #4AB127

split-complementary

#278FB1 #B1274A #B18E27

monochromatic

#113E4D #1C667F #278FB1 #40B0D5 #72C5E0

Accessibility & contrast

On white

3.72

#278FB1 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.65

#278FB1 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278FB1

5.65:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278FB1	#FFFFFF	#000000	##000000
##278FB1	1.00	3.72	5.65	5.65
#FFFFFF	3.72	1.00	21.00	21.00
#000000	5.65	21.00	1.00	1.00
##000000	5.65	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7C8CB3

Deuteranopia (green-blind)

#6A7FB1

Tritanopia (blue-blind)

#00999A

Achromatopsia (no color)

#848484

Design tokens & code

CSS

--color: #278fb1;
/* rgb */ color: rgb(39, 143, 177);
/* oklch */ color: oklch(60.8% 0.104 224.9);

Tailwind

colors: {
  custom: {
    50: '#77b0c8',
    500: '#278fb1',
    950: '#000000',
  },
}

SCSS

$custom: #278fb1;
$custom-light: #77b0c8;
$custom-dark: #000000;

JSON

{
  "hex": "#278fb1",
  "rgb": {
    "r": 39,
    "g": 143,
    "b": 177
  },
  "hsl": {
    "h": 194.783,
    "s": 63.889,
    "l": 42.353
  },
  "oklch": {
    "l": 0.60772,
    "c": 0.10365,
    "h": 224.9
  },
  "luminance": 0.23251
}

Semantic roles & 50–950 ramp

primary

#278FB1

secondary

#C7836D

accent

#6A41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278FB1

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

Preview Lab → · Contrast checker → · Palette generator →