#277C90#277C90

#277C90 is a mid, moderate cyan. Relative luminance 0.169; OKLCH L 54.5% C 0.084 H 216.9°. Best body text is #FFFFFF at 4.80:1 contrast (WCAG AA passes).

Color values

HEX	#277C90
RGB	rgb(39, 124, 144)
HSL	hsl(191, 57%, 36%)
HSV	hsv(191, 73%, 56%)
CMYK	cmyk(72.9%, 13.9%, 0%, 43.5%)
CIE-LAB	lab(48.08, -18.10, -18.11)
CIE-LCH	lch(48.08, 25.60, 225.03°)
OKLab	oklab(54.52% -0.0673 -0.0505)
OKLCH	oklch(54.52% 0.084 216.9)
XYZ	xyz(13.0763, 16.8587, 28.9451)
Luminance	0.1686 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#277C90 #903B27

analogous

#27906F #277C90 #274790

triadic

#277C90 #90277C #7C9027

tetradic

#277C90 #6F2790 #903B27 #479027

square

#277C90 #6F2790 #903B27 #479027

split-complementary

#277C90 #902747 #906F27

monochromatic

#0D2930 #1A5360 #277C90 #34A5C0 #5EBDD3

Accessibility & contrast

On white

4.80

#277C90 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.37

#277C90 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #277C90

4.80:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##277C90	#FFFFFF	#000000	##FFFFFF
##277C90	1.00	4.80	4.37	4.80
#FFFFFF	4.80	1.00	21.00	1.00
#000000	4.37	21.00	1.00	21.00
##FFFFFF	4.80	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#6F7891

Deuteranopia (green-blind)

#606E90

Tritanopia (blue-blind)

#008382

Achromatopsia (no color)

#727272

Design tokens & code

CSS

--color: #277c90;
/* rgb */ color: rgb(39, 124, 144);
/* oklch */ color: oklch(54.5% 0.084 216.9);

Tailwind

colors: {
  custom: {
    50: '#71a2b0',
    500: '#277c90',
    950: '#000000',
  },
}

SCSS

$custom: #277c90;
$custom-light: #71a2b0;
$custom-dark: #000000;

JSON

{
  "hex": "#277c90",
  "rgb": {
    "r": 39,
    "g": 124,
    "b": 144
  },
  "hsl": {
    "h": 191.429,
    "s": 57.377,
    "l": 35.882
  },
  "oklch": {
    "l": 0.54521,
    "c": 0.08415,
    "h": 216.9
  },
  "luminance": 0.1686
}

Semantic roles & 50–950 ramp

primary

#277C90

secondary

#B96C5A

accent

#6447E1

background

#F7F9FA

surface

#EDF2F4

border

#C8CCCE

text

#090F10

muted

#7B7E7F

Preview Lab

Preview with #277C90

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

Preview Lab → · Contrast checker → · Palette generator →