#278AB0#278AB0

#278AB0 is a mid, moderate cyan. Relative luminance 0.217; OKLCH L 59.5% C 0.105 H 228.8°. Best body text is #000000 at 5.35:1 contrast (WCAG AA passes).

Color values

HEX	#278AB0
RGB	rgb(39, 138, 176)
HSL	hsl(197, 64%, 42%)
HSV	hsv(197, 78%, 69%)
CMYK	cmyk(77.8%, 21.6%, 0%, 31%)
CIE-LAB	lab(53.75, -14.81, -27.97)
CIE-LCH	lch(53.75, 31.65, 242.10°)
OKLab	oklab(59.5% -0.0689 -0.0786)
OKLCH	oklch(59.5% 0.105 228.8)
XYZ	xyz(17.7584, 21.7407, 44.3263)
Luminance	0.2174 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#278AB0 #B04D27

analogous

#27B091 #278AB0 #2746B0

triadic

#278AB0 #B0278A #8AB027

tetradic

#278AB0 #9127B0 #B04D27 #46B027

square

#278AB0 #9127B0 #B04D27 #46B027

split-complementary

#278AB0 #B02746 #B09127

monochromatic

#113B4C #1C637E #278AB0 #40ABD5 #72C1E0

Accessibility & contrast

On white

3.93

#278AB0 on #FFFFFF

AA ✗AA large ✓AAA ✗

On black

5.35

#278AB0 on #000000

AA ✓AA large ✓AAA ✗

Best text color

#000000 on #278AB0

5.35:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##278AB0	#FFFFFF	#000000	##000000
##278AB0	1.00	3.93	5.35	5.35
#FFFFFF	3.93	1.00	21.00	21.00
#000000	5.35	21.00	1.00	1.00
##000000	5.35	21.00	1.00	1.00

Color blindness preview

Protanopia (red-blind)

#7688B2

Deuteranopia (green-blind)

#647BAF

Tritanopia (blue-blind)

#009597

Achromatopsia (no color)

#808080

Design tokens & code

CSS

--color: #278ab0;
/* rgb */ color: rgb(39, 138, 176);
/* oklch */ color: oklch(59.5% 0.105 228.8);

Tailwind

colors: {
  custom: {
    50: '#77acc7',
    500: '#278ab0',
    950: '#000000',
  },
}

SCSS

$custom: #278ab0;
$custom-light: #77acc7;
$custom-dark: #000000;

JSON

{
  "hex": "#278ab0",
  "rgb": {
    "r": 39,
    "g": 138,
    "b": 176
  },
  "hsl": {
    "h": 196.642,
    "s": 63.721,
    "l": 42.157
  },
  "oklch": {
    "l": 0.59496,
    "c": 0.10451,
    "h": 228.8
  },
  "luminance": 0.21743
}

Semantic roles & 50–950 ramp

primary

#278AB0

secondary

#C7856C

accent

#6F41E7

background

#F7FAFC

surface

#EEF4F8

border

#C9CED1

text

#0A1013

muted

#7C7F82

Preview Lab

Preview with #278AB0

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

Preview Lab → · Contrast checker → · Palette generator →